{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"Creep of a polycrystalline near γ-TiAl alloy in two fully <span style=\"color:red\">lamellar</span> conditions is presented. A <span style=\"color:red\">lamellar</span> structure with fine interface spacing and planar grain boundaries provides improved creep resistance. The <span style=\"color:red\">lamellar</span> structure with wide interface spacing and interlocked grain boundaries has <1/2 the creep life, five times the minimum strain rate and greater tertiary strain.Creep strain is accommodated by dislocation motion in soft grains, but the strain rate is controlled by hard grains. The resistance to fracture is controlled by the grain boundary morphology, with planar boundaries causing intergranular fracture.To maximize the creep resistance of near γ-TiAl with a <span style=\"color:red\">lamellar</span> microstructure requires narrow <span style=\"color:red\">lamellar</span> interface spacing and interlocked lamellae along grain boundaries.","authors":[{"authorName":"WR. Chen","id":"0e0e90ab-b467-4995-bb54-7dc6cfb7b788","originalAuthorName":"WR. Chen"},{"authorName":" J.Triantafillou","id":"bac588bb-4125-47d8-9743-6a293030a1ec","originalAuthorName":" J.Triantafillou"},{"authorName":"J. Beddoes and L. Zhao(Dept. of Mech. & Aero. Eng.","id":"3eda659f-3ca5-4db8-a6b8-4e006e2d8c92","originalAuthorName":"J. Beddoes and L. Zhao(Dept. of Mech. & Aero. Eng."},{"authorName":"Carleton University","id":"f73560ff-e386-4c3c-8975-3e2a7d2f996b","originalAuthorName":"Carleton University"},{"authorName":" Ottawa","id":"3949ecb4-53c0-4a78-9aa8-028e633db8d8","originalAuthorName":" Ottawa"},{"authorName":"Canada Structures","id":"3b4cb58c-8da3-4fc0-a173-ca814868be0f","originalAuthorName":"Canada Structures"},{"authorName":" Materials & Propulsion Laboratory","id":"bceeecc7-a150-4f9b-8692-78bd59cc6d27","originalAuthorName":" Materials & Propulsion Laboratory"},{"authorName":"National Research Council","id":"52b9e825-a62e-426d-9330-a534731023ba","originalAuthorName":"National Research Council"},{"authorName":" Ottawa","id":"f9c25225-89ab-4eb6-bb5a-4f556316e4fe","originalAuthorName":" Ottawa"},{"authorName":" Canada Manuscript received 26 August 1996)","id":"4fb95614-afc5-4719-9665-46367a4e462e","originalAuthorName":" Canada Manuscript received 26 August 1996)"}],"categoryName":"|","doi":"","fpage":"565","id":"8aca26b4-68fd-4b80-8160-fcd102059697","issue":"6","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"cfdb9e8b-1326-4251-b2e2-41ae5877acce","keyword":":creep","originalKeyword":":creep"},{"id":"f1d32b19-7a12-4a1f-8aac-8373b4192873","keyword":"null","originalKeyword":"null"},{"id":"fb86ef29-4f0f-440a-9f8a-202d4c0e7b4a","keyword":"null","originalKeyword":"null"},{"id":"5c171faa-acc8-43d2-9af2-2e557376e5c9","keyword":"null","originalKeyword":"null"},{"id":"e05197cb-808e-4892-962d-b34bf4a610a1","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1996_6_23","title":"CREEP OF POLYCRYSTALLINE NEAR γ-TiAl WITH A <span style=\"color:red\">LAMELLAR</span> MICROSTRUCTURE","volume":"9","year":"1996"},{"abstractinfo":"Enhancing mechanical properties and improving reliability of TiAl alloys by utilizing the mechanical anisotropy of the cast <span style=\"color:red\">lamellar</span> structure were reported. A self-oriented <span style=\"color:red\">lamellar</span> (SOL) microstructure was successfully produced in shaped components. After modification by hot isostatic pressing, such a microstructure exhibited improved mechanical properties. The TiAl rotor blades with SOL in a turbocharger passed rotation rig tests and showed enhanced engine performance.","authors":[{"authorName":"J.Zhang","id":"e71ff155-4568-4337-a062-af7bc008d4da","originalAuthorName":"J.Zhang"},{"authorName":" K.Xia","id":"6992c7ff-67c8-48c9-b379-80c2f3339ee6","originalAuthorName":" K.Xia"}],"categoryName":"|","doi":"","fpage":"99","id":"a1441eee-1f1a-4983-9c48-4cccc9f58dc7","issue":"Supl.1","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[{"id":"f85f4573-4972-4add-a179-9769ae8e68f0","keyword":"TiAl alloys","originalKeyword":"TiAl alloys"},{"id":"044ac634-aac5-4c4e-b37d-fd4809cb58fd","keyword":"null","originalKeyword":"null"},{"id":"85e78df5-5cff-4a0c-9ccb-59c70eec691b","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1005-0302_2005_Supl.1_15","title":"Cast Gamma TiAl with Self Oriented <span style=\"color:red\">Lamellar</span> Microstructure","volume":"21","year":"2005"},{"abstractinfo":"Based on the Jackson and Hunt’s analysis, the selection of <span style=\"color:red\">lamellar</span> spacing in regular eutectics was reexamined at low velocity. The isothermal assumption was released and the effective interface undercooling was determined by the weighted average of the eutectic phases. It is found that the <span style=\"color:red\">lamellar</span> spacing minimized the effective interface undercooling depends only on the intrinsic characteristics of a given system at a fixed velocity. In addition, the selection of <span style=\"color:red\">lamellar</span> spacing is related to the relationship between the average interfacial undercoolings of the eutectic phases and the <span style=\"color:red\">lamellar</span> spacing. The selected <span style=\"color:red\">lamellar</span> spacing obviously deviated from that predicted by the Jackson and Hunt’s analysis if the variation of the average interfacial undercoolings of the solid phases with the <span style=\"color:red\">lamellar</span> spacing was markedly different at a constant growth rate.","authors":[{"authorName":"Guanghui MENG","id":"9163126b-bba5-4a9f-8973-84dc7c3d3c21","originalAuthorName":"Guanghui MENG"},{"authorName":" Xin LIN","id":"950fb927-18f0-4116-a147-9777191e307a","originalAuthorName":" Xin LIN"},{"authorName":" Weidong HUANG","id":"27765dca-d1b1-4dc1-acfb-068ba27dfddb","originalAuthorName":" Weidong HUANG"}],"categoryName":"|","doi":"","fpage":"851","id":"881fb9cc-d223-48ad-be8b-b995d9d85d26","issue":"6","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[{"id":"2b565078-f061-41cf-b737-2e6402332953","keyword":"Solidification","originalKeyword":"Solidification"},{"id":"3de472dc-5dac-4b89-af28-fbac484697e9","keyword":"null","originalKeyword":"null"},{"id":"3e03dfae-e787-4fe0-aade-c0bd523ae4d1","keyword":"null","originalKeyword":"null"},{"id":"69f48807-7db0-4095-848d-d8a93061d014","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1005-0302_2007_6_16","title":"<span style=\"color:red\">Lamellar</span> Spacing Selection in Regular Eutectic Solidification at Low Velocity","volume":"23","year":"2007"},{"abstractinfo":"Instead of conventional grain-refinement treatments for improving the ductility of fully <span style=\"color:red\">lamellar</span> TiAl alloys, multiorientational, <span style=\"color:red\">lamellar</span>, subcolony refinement with good ductility has been achieved simply by using an electric-current pulse treatment. The microstructural refinement mechanism is attributed to the transformation on heating of gamma laths in the prior large-grain <span style=\"color:red\">lamellar</span> structure to Widmanstatten alpha in several orientations, which on subsequent cooling forms <span style=\"color:red\">lamellar</span> structure colonies in multiple orientations. This kind of refined multiple-colony <span style=\"color:red\">lamellar</span> structure was found to enhance the ductility of the TiAl alloy.","authors":[],"categoryName":"|","doi":"","fpage":"949","id":"32d3890e-e06b-41e2-ada8-8bc4b475fa3e","issue":"4","journal":{"abbrevTitle":"JOMR","id":"155c387a-c8cb-4083-85f3-6b58aeef4116","issnPpub":"0884-2914","publisherId":"JOMR","title":"Journal of Materials Research"},"keywords":[{"id":"0b9f6e08-99c7-4033-980d-a8cdf2a0e4d5","keyword":"al-alloys;massive transformation;mechanical-properties;deformation-behavior;titanium aluminides;phase-equilibria;creep-behavior;gamma;alpha;microstructures","originalKeyword":"al-alloys;massive transformation;mechanical-properties;deformation-behavior;titanium aluminides;phase-equilibria;creep-behavior;gamma;alpha;microstructures"}],"language":"en","publisherId":"0884-2914_2008_4_1","title":"Ductile TiAl alloy with a Widmanstatten <span style=\"color:red\">lamellar</span> structure formed by rapid heating","volume":"23","year":"2008"},{"abstractinfo":"In two-phase TiAl alloys, the <span style=\"color:red\">lamellar</span> structures are of special interest and importance since they are so common and persistent. not only under as-cast conditions but also after thermal treatment. However. the <span style=\"color:red\">lamellar</span> structures are still poor in ductility,although they are beneficial for toughness and high temperature strength. This article will review the recent progress made in understanding the basic mechanical properties of the γ and α2 phases which comprise the two-phase alloys in Iamellar form, and discuss how an improved balance of strength and ductillty in the <span style=\"color:red\">lamellar</span> form may be achieved","authors":[{"authorName":"Masaharu Yamaguchi and Haruyuki Inui(Department of Metal Science and Technology","id":"309266cd-de15-42fe-9c3f-edb3220b8dd3","originalAuthorName":"Masaharu Yamaguchi and Haruyuki Inui(Department of Metal Science and Technology"},{"authorName":" Kyoto University","id":"64aa5992-c12e-4953-b7c6-dd99d36b08bf","originalAuthorName":" Kyoto University"},{"authorName":" Sakyo-ku","id":"e4d7d004-97b8-4dbd-a01a-f0c51f9ae755","originalAuthorName":" Sakyo-ku"},{"authorName":" Kyoto 606","id":"39453e23-fdfd-4a9b-8089-1a5d8d588ffe","originalAuthorName":" Kyoto 606"},{"authorName":" Japan)","id":"72dfad98-6f65-497f-a9c1-da53d93ea3bb","originalAuthorName":" Japan)"}],"categoryName":"|","doi":"","fpage":"193","id":"157fb02c-d3ac-489f-983c-35af5eaee018","issue":"3","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[],"language":"en","publisherId":"1005-0302_1994_3_4","title":"Microstructure and Mechanical Properties of Two-phase TiAl Alloys in <span style=\"color:red\">Lamellar</span> Form","volume":"10","year":"1994"},{"abstractinfo":"The microstructural stability of <span style=\"color:red\">lamellar</span> TiAl-base alloys at high temperature was studied by conventional and high-resolution transmission electron microscopy. This paper emphasized the influence of substructures on the thermal stability of <span style=\"color:red\">lamellar</span> structure. These substructures produced by thermal mechanical treatments include lattice dislocations and boundary dislocations, the subgrain boundaries, the impinged T (Q) twins and misorientated multi-ledges <span style=\"color:red\">lamellar</span> interface boundaries. Three dual-phase TiAl based alloys containing different type and density of substructures were produced by different thermomechanical treatments. The microstructural changes in these dual phase TiAl-base alloys were compared after exposure at 800-1000 degrees C. It was found that the existence of such substructures could accelerate the degeneration of <span style=\"color:red\">lamellar</span> structure, leading to the rapid necking and break-up of alpha(2) plates, the coarsening of gamma plates, and the formation of new gamma grains. A detailed description of various degeneration processes was given in the paper. As a result, the <span style=\"color:red\">lamellar</span> structure with heavy substructures started to degenerate after thermal exposure at 800 degrees C for 4.5 h. While only slight coarsening was observed at the colony boundaries in the <span style=\"color:red\">lamellar</span> structure without substructures even after exposure at 900 degrees C for 7 days. (C) 1999 Elsevier Science Ltd. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"1211","id":"58e14b9a-f17d-46f2-b675-7b8e83241a3f","issue":"11","journal":{"abbrevTitle":"I","id":"df3168b7-7d28-4fa0-892e-186eb4f3fef5","issnPpub":"0966-9795","publisherId":"I","title":"Intermetallics"},"keywords":[{"id":"be15bc71-56bd-463b-af82-2303449d0a78","keyword":"titanium aluminides;based on TiAl;defects, dislocation geometry and;arrangement;defects, planar faults;alpha(2)/gamma interfacial structure;deformed ti-45al-10nb alloy;creep;resistance;deformation","originalKeyword":"titanium aluminides;based on TiAl;defects, dislocation geometry and;arrangement;defects, planar faults;alpha(2)/gamma interfacial structure;deformed ti-45al-10nb alloy;creep;resistance;deformation"}],"language":"en","publisherId":"0966-9795_1999_11_1","title":"Microstructural stability of <span style=\"color:red\">lamellar</span> TiAl-based alloys at high temperature","volume":"7","year":"1999"},{"abstractinfo":"A numerical model is established to simulate the concentration field in irregular lamel-lar eutectic of Al-Si system.Both the undercooling and spacing are dependent on thegrowth rate and the temperature gradient,and increasing growth rate causes an in-crease of undercooling but a decrease of <span style=\"color:red\">lamellar</span> spacing,while increasing temperaturegradient leads to a decrease of <span style=\"color:red\">lamellar</span> spacing.The computed results are in goodagreement with experimental observations.","authors":[{"authorName":"W.Q.Zhang","id":"db151629-e273-4e1e-b9ae-48e99311c9e8","originalAuthorName":"W.Q.Zhang"},{"authorName":" L.Xiao","id":"33d7685f-ddba-4a29-9e95-657a534dc78d","originalAuthorName":" L.Xiao"}],"categoryName":"|","doi":"","fpage":"291","id":"d7c0e74e-12b4-4f64-8462-7d4de835e2d6","issue":"4","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"935fefc5-8158-415a-ae8f-0835bb994ee8","keyword":"irregular eutectic","originalKeyword":"irregular eutectic"},{"id":"5b4a7e0e-6146-4805-830d-fda7d37ef2d7","keyword":"null","originalKeyword":"null"},{"id":"726040d8-aa66-4c8d-92e8-5bd259cb5208","keyword":"null","originalKeyword":"null"},{"id":"02f9aaac-ffd1-4f7a-8818-3ab4d5bf06ab","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_2001_4_7","title":"A NUMERICAL MODEL OF <span style=\"color:red\">LAMELLAR</span> SPACING OF Al-Si EUTECTIC","volume":"14","year":"2001"},{"abstractinfo":"The morphology and crystallographic orientation of(α_2+γ)<span style=\"color:red\">lamellar</span> structure in duplex Ti-47.5Al-2.5V intermetallic compound have been studied by means of TEM, microdiffraction as well as 180° and non-180° rotation twinning analysis.A possible atomic model of the interface was suggested.Thus,approach was made to a mechanism on complex nucleation of α_2+γ two phases along α-Ti interface,and growth of α_2/γ/γ_1/α_2 or α_2/γ/α_2/γ as fundamental structural unit.","authors":[{"authorName":"GAO Ying ZHU Jing CAI Qigong Central Iron and Steel Research Institute","id":"c00a9e5f-8255-4cf6-81e2-0b0ac7178ef9","originalAuthorName":"GAO Ying ZHU Jing CAI Qigong Central Iron and Steel Research Institute"},{"authorName":"Ministry of Metallurgical Industry","id":"1a6d68eb-2d61-4bc2-aa45-76573f37c680","originalAuthorName":"Ministry of Metallurgical Industry"},{"authorName":"Beijing","id":"8ba3a7d9-90c9-4e88-84c3-56b8700a63ca","originalAuthorName":"Beijing"},{"authorName":"China","id":"42287f16-e23e-47a3-8208-148b8482d2b4","originalAuthorName":"China"}],"categoryName":"|","doi":"","fpage":"282","id":"4cfc6a9b-6ea3-4785-988a-88bb0dcfbe5b","issue":"4","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"593de6f5-3fd9-4a23-8f4b-8361313a0285","keyword":"TiAl intermetallic compound","originalKeyword":"TiAl intermetallic compound"},{"id":"aba92843-6c7b-4c53-a9cc-3fa7d3587614","keyword":"null","originalKeyword":"null"},{"id":"922f8254-a0bc-4903-b989-32649aada1b9","keyword":"null","originalKeyword":"null"},{"id":"2a0eb456-6839-4754-902f-a7992600d9c4","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1992_4_17","title":"<span style=\"color:red\">LAMELLAR</span> MICROSTRUCTURE IN DUPLEX Ti-Al-V INTERMETALLIC COMPOUND","volume":"5","year":"1992"},{"abstractinfo":"为了研究Mg-Gd-Zn-Zr合金中的长周期堆垛有序(LPSO)结构的形成及其演化, 对铸态、固溶态和时效态Mg<sub>96.32</sub>Gd<sub>2.50</sub>Zn<sub>1.00</sub>Zr<sub>0.18</sub>合金的显微组织进行了观察. OM, SEM和TEM观察表明, 合金铸态组织由<em>&alpha;</em>-Mg固溶体、晶内层片状14H-LPSO结构和晶界处树枝状<em>&alpha;</em>-Mg+<em>&beta;</em>-(Mg, Zn)<sub>3</sub>Gd共晶相组成; 500 ℃/35 h固溶处理后, 晶界处发生<em>&beta;&rarr;X</em>的固态相变, 层片状<em>X</em>相也具有14H-LPSO结构; 再经200 ℃/128 h 峰时效处理后, 晶内析出椭球状$\\beta^{\\prime}$相和片状$\\beta_{1}$相与14H-LPSO结构共存. 室温拉伸实验和Vickers硬度测试表明, 500 ℃/35 h+200 ℃/128 h处理改善了合金的力学性能, 抗拉强度为290.7 MPa, 屈服强度为162.5 MPa, Vickers硬度为108.0 HV, 延伸率为10.4%. 力学性能的改善与晶界、晶内的14H-LPSO结构及时效相等复合强韧化作用有关.","authors":[{"authorName":"曾小勤吴玉娟彭立明林栋樑丁文江彭赢红","id":"f8c3365d-b6d9-4d5d-b246-a3dbb37db1ea","originalAuthorName":"曾小勤吴玉娟彭立明林栋樑丁文江彭赢红"}],"categoryName":"|","doi":"10.3724/SP.J.1037.2009.00833","fpage":"1041","id":"b956a341-c83b-45f1-9294-376df9097dd8","issue":"9","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"7f96674a-6ed0-44a8-bd4e-9a7e0673b3da","keyword":"Mg-Gd-Zn-Zr合金","originalKeyword":"Mg-Gd-Zn-Zr合金"},{"id":"a58d2043-74b7-418f-bccf-da11cbad16e8","keyword":"long period stacking ordered (LPSO) structure","originalKeyword":"long period stacking ordered (LPSO) structure"},{"id":"ad2a82dc-a868-450a-bb3d-93ed9104d62b","keyword":"<span style=\"color:red\">lamellar</span>","originalKeyword":"lamellar"},{"id":"aac916f2-7e83-4035-800d-b348690ccede","keyword":"aging treatment","originalKeyword":"aging treatment"}],"language":"zh","publisherId":"0412-1961_2010_9_5","title":"Mg-Gd-Zn-Zr合金中的LPSO结构和时效相","volume":"46","year":"2010"},{"abstractinfo":"A numerical model is established to describe <span style=\"color:red\">lamellar</span> eutectics grown from the liquid with transverse flow ahead of the liquid/solid interface. The computing results show that the spacing selection for convection-free eutectic growth is in good agreement with experimental observations. Fluid flow causes the interlamellar spacing to be increased, but this structure coarsening effect is strongly dependent on growth rate. It is also found that flow intensity has an upper limit, below which the computation converges, indicating that strong fluid flow is responsible for structure instability and morphological transition. (C) 1998 Elsevier Science B.V. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"263","id":"0dd0dbb7-c7cf-42e2-8351-64c7633b2694","issue":"2","journal":{"abbrevTitle":"JOCG","id":"35b76046-de1f-4d9d-b5ab-3e317cb22ddc","issnPpub":"0022-0248","publisherId":"JOCG","title":"Journal of Crystal Growth"},"keywords":[{"id":"229a07a8-f140-4c13-8ffa-c49159b8ab4b","keyword":"eutectic;<span style=\"color:red\">lamellar</span> spacing;fluid flow;model;growth rate;undercooling;rapid solidification conditions;irregular eutectics;forced-convection;pb-sn;al-si;systems;alloys","originalKeyword":"eutectic;lamellar spacing;fluid flow;model;growth rate;undercooling;rapid solidification conditions;irregular eutectics;forced-convection;pb-sn;al-si;systems;alloys"}],"language":"en","publisherId":"0022-0248_1998_2_1","title":"A numerical model for spacing selection of <span style=\"color:red\">lamellar</span> eutectics grown from flowing liquids","volume":"194","year":"1998"}],"totalpage":15,"totalrecord":149}