{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"马氏体用变按动力学分为变温相变和等温相变按热力学和界面动态分为热弹性相变、近似热弹性相变和非热弹性相变,其判据为(1)临界相变驱动力小,热滞小;(2)相界面能往复(正、逆)运动;(3)形状应变由弹性协作,马氏体内的弹性储存能对逆相变驱动力作出贡献按形核机制分为近似局域软模形核和层错形核,前者母相强化阻碍相变开动;后老母相强化不影响从,相变内耗峰出现的温度范围未见摸量的明显下降一级相变特性很弱的称为赝马氏体相变","authors":[{"authorName":"徐祖耀","id":"871a2e4a-7e74-4314-9c77-d26b7322dcf0","originalAuthorName":"徐祖耀"}],"categoryName":"|","doi":"","fpage":"45","id":"9b602887-298d-41ff-b20d-d7c0abe85964","issue":"1","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"ed43cbc9-d811-4e3e-8d13-8ca81ff0d4aa","keyword":"马氏体相变的分类","originalKeyword":"马氏体相变的分类"},{"id":"16a333db-be14-4e4c-a5c7-a0ed8147703a","keyword":"semi-thermoelatic transformation","originalKeyword":"semi-thermoelatic transformation"},{"id":"1d2a715f-cbff-404c-ad53-0023f2eefd85","keyword":" local soft mode","originalKeyword":" local soft mode"},{"id":"788c9365-b577-4239-9683-6f4626da61be","keyword":" nucleation by stacking fault","originalKeyword":" nucleation by stacking fault"},{"id":"93d7013f-c350-47e6-bdf8-17436156c432","keyword":" quasi-martensitic transformation","originalKeyword":" quasi-martensitic transformation"}],"language":"zh","publisherId":"0412-1961_1997_1_3","title":"马氏体相变的分类","volume":"33","year":"1997"},{"abstractinfo":"Finite element analysis was performed to investigate the stresses within and around a soft hemispherical particle located on the surface of a hard matrix under a remote external tensile load. The purpose was to understand the effects of neodymium rich particles on the fatigue properties of Ti-55 alloy. Three case studies mere considered. First both particle and matrix mere perfect, second a crack existed within the particle, and third a crack was located in the matrix adjacent to the particle. Numerical results show that soft particles cause stress concentration in regions of the matrix adjacent to the particle, but that such stress concentrations are much weaker than those associated with a cavity. A crack within the particle increases the stress concentration in the matrix only a little when the crack is far from the interface. However, a crack in the matrix significantly increases local stress in the particle.","authors":[],"categoryName":"|","doi":"","fpage":"463","id":"f615e17f-edee-4b7c-a93a-2b41992af4ff","issue":"4","journal":{"abbrevTitle":"MSAT","id":"5c4ea523-f3ab-4618-9c21-537efff1d7fc","issnPpub":"0267-0836","publisherId":"MSAT","title":"Materials Science and Technology"},"keywords":[{"id":"b6a8a79f-cfa6-4908-bd23-2aecb09f79fa","keyword":"fatigue-crack initiation;finite-element;deformation;composites;alloy","originalKeyword":"fatigue-crack initiation;finite-element;deformation;composites;alloy"}],"language":"en","publisherId":"0267-0836_2000_4_2","title":"Effects of soft hemispherical particle on local surface stress of hard matrix","volume":"16","year":"2000"},{"abstractinfo":"The terahertz dielectric response of LuFe(2)O(4) is investigated by terahertz time-domain spectroscopy over a temperature range of 6-290 K. It is revealed that besides the central mode associated with the charge-ordered state, a soft TO(1) mode at below similar to 240 K is identified indicating the existence of displacing ferroelectricity, in addition to the charge-ordering-induced ferroelectricity at below 320 K. The anomaly of the soft mode at similar to 180 K reflects the magnetoelectric correlation between the soft TO(1) mode and the spin/charge fluctuations revealed recently. Finally, the magnetic property at below similar to 240 K is discussed.","authors":[],"categoryName":"|","doi":"","fpage":"893","id":"9e0cfeee-a540-4b76-a287-0d756d321b70","issue":"4","journal":{"abbrevTitle":"APAS&P","id":"cde04357-7cb8-4746-b682-a64bfb9590d6","issnPpub":"0947-8396","publisherId":"APAS&P","title":"Applied Physics a-Materials Science & Processing"},"keywords":[{"id":"e5af614e-f6cc-4ffb-8a79-d558799a2a8d","keyword":"system lufe2o4;charge;polarization","originalKeyword":"system lufe2o4;charge;polarization"}],"language":"en","publisherId":"0947-8396_2009_4_1","title":"Terahertz spectroscopy of central and soft phonon modes in LuFe(2)O(4)","volume":"96","year":"2009"},{"abstractinfo":"Hydrogen induced cracking(HIC)of 0.3% C,1% Cr,1% Mn,1% Si high strength steel has been studied under simple mode Ⅰ,mode Ⅱ and(Ⅰ+Ⅱ)mixed mode loading conditions.Af- ter being hydrogen-charged in IN H_2SO_4 solution,the material behaved hydrogen embrittlement in all the cases studied.The threshold K_(ⅡH)/K_(ⅡX) of HIC under mode Ⅱ load- ing was 0.27,which was nearly the same as that K(ⅠH)/K_(ⅠX)=0.29 under mode Ⅰ loading. While the thresholds of-HIC under(Ⅰ+Ⅱ)mixed mode loading were 0.36,0.41 and 0.37 cor- responding to the K_Ⅱ/K_Ⅰ ratio of 0.27,0.4 and O.81.The results show that simple mode Ⅰ or mode Ⅱ loading is more susceptible to hydrogen embrittlement than(Ⅰ+Ⅱ)mixed mode. For explaining the experimental results,the effects of triaxial stress as well as plastic deformation ahead of crack tip has been discussed.","authors":[{"authorName":"GAO Hua XUE Lijue Shanghai University of Engineering Science","id":"0fc2502e-0847-47c0-b1ff-67364a271477","originalAuthorName":"GAO Hua XUE Lijue Shanghai University of Engineering Science"},{"authorName":"Shanghai","id":"2ae8191f-4894-4f7b-9b34-ae5b029ff299","originalAuthorName":"Shanghai"},{"authorName":"China Associate Professor","id":"6069ee5e-205d-49f4-8530-8131a398977c","originalAuthorName":"China Associate Professor"},{"authorName":"Dept.of Materials","id":"f1b295aa-d96f-4bdb-b19c-16749baba5df","originalAuthorName":"Dept.of Materials"},{"authorName":"Shanghai University of Engineering Science","id":"432efeba-b850-4e60-b69c-bf1c55c4844c","originalAuthorName":"Shanghai University of Engineering Science"},{"authorName":"350 Xianxia Road","id":"0aa0e7ce-407d-4f7c-bf45-b9c71285aea6","originalAuthorName":"350 Xianxia Road"},{"authorName":"Shanghai","id":"f099a3dd-13ab-4678-84d3-1809890c6432","originalAuthorName":"Shanghai"},{"authorName":"China","id":"49dd24c4-5e94-44f7-b3a9-1eba77707dd4","originalAuthorName":"China"}],"categoryName":"|","doi":"","fpage":"279","id":"8ababa1b-2beb-4095-93b0-f334d710ac9c","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":"49820a20-f454-4ea4-b2d0-c520ad9e0327","keyword":"(Ⅰ+Ⅱ)mixed mode","originalKeyword":"(Ⅰ+Ⅱ)mixed mode"},{"id":"cafc9217-7b27-49d9-b0e9-3e537d480a40","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1989_4_6","title":"(Ⅰ+Ⅱ)MIXED MODE HYDROGEN INDUCED CRACKING","volume":"2","year":"1989"},{"abstractinfo":"Complex structures can be regarded as bring derived from a few basic structures via the local twinning at the atomic level. Although quasicrystals and approximants are believed to be the B2 derivatives, the related B2 twinning mode is not known. This paper addresses this problem by analysing the twinning property of Al-Cu approximants in an Al3Cu4 sample. Such an analysis leads to the recognition of the B2 chemical-twinning mode as 180 degrees/[111]B-2, which is responsible for the pentagonal atomic configuration in the Al-Cu approximants as well as for the pseudofivefold B2 twinning observed on quasicrystal surfaces.","authors":[],"categoryName":"|","doi":"","fpage":"501","id":"603a0e1d-f375-44f5-ae58-8552de20d48b","issue":"3","journal":{"abbrevTitle":"PMAOCMSDAMP","id":"e62fc53d-c8fd-4637-86db-12a39c2dbf47","issnPpub":"0141-8610","publisherId":"PMAOCMSDAMP","title":"Philosophical Magazine a-Physics of Condensed Matter Structure Defects and Mechanical Properties"},"keywords":[{"id":"ac16edd5-7533-4dcf-95d4-0c22ca61f3cc","keyword":"quasi-crystals","originalKeyword":"quasi-crystals"}],"language":"en","publisherId":"0141-8610_1999_3_1","title":"Chemical-twinning mode of the B2 structure in relation to Al-Cu approximants","volume":"79","year":"1999"},{"abstractinfo":"Fatigue threshold under mixed-mode I and II loading and elastic plane-strain conditions has been studied in dual-phase steels (DPS) of two types of volume fraction of martensite (V(m)) in laboratory air at room temperature. Near-threshold mixed-mode (I and II) fatigue crack growth occurs mainly by two mechanisms: shear mode, and tensile mode. Particular emphasis was placed on the influence of the mode II component. The mixed-mode threshold is controlled not only by mode I displacement but also by the mode II component. Apparent- and effective-bound curves (corrected closure) are obtained for the threshold condition and discussed in terms of the shape and size of the plastic region of crack tip; crack surface rubbing; and especially, roughness-induced closure and shear resistance of crack surface that resulted in an extremely high extrinsic-toughening contribution to the mixed-mode fatigue threshold values. The ratio of the threshold value of pure mode II to that of pure mode I (DELTAK(th,II)/DELTAK(th,I) attained highly to 1.9 times; the maximum hoop direction stress-intensity factor range of pure mode II branch crack tip is 2.2 times that of pure mode I. Obviously, the resistance of pure mode II crack growth here is far larger than that of pure mode I; the former is just to introduce the shear resistance of crack surface, the latter, to reduce the driving force of crack tip for crack closure. It is proposed that the apparent- and effective-bound curves are nonconservative risky and too conservative for design purposes, respectively. So, the threshold data should be obtained under the specific conditions found by concrete mechanical, microstructural, and environmental factors.","authors":[],"categoryName":"|","doi":"","fpage":"1713","id":"8d683d6d-d97f-4227-b983-fca3d20308b2","issue":"8","journal":{"abbrevTitle":"MAMTAMAMS","id":"3c00bd0a-9b64-4f42-89c3-0e640883446c","issnPpub":"1073-5623","publisherId":"MAMTAMAMS","title":"Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science"},"keywords":[{"id":"0fd63229-467a-415b-bcee-52302bb7c2ee","keyword":"superposition model;mild-steel;growth;propagation;behavior;microstructures;fracture","originalKeyword":"superposition model;mild-steel;growth;propagation;behavior;microstructures;fracture"}],"language":"en","publisherId":"1073-5623_1994_8_1","title":"MIXED-MODE-I AND MIXED-MODE-II FATIGUE THRESHOLD AND CRACK CLOSURE IN DUAL-PHASE STEELS","volume":"25","year":"1994"},{"abstractinfo":"Nominal mode I and mixed mode I/II fatigue tests were carried out using the intermetallic compound Ni3Al(CrB) in the form of single crystal specimens. The effects of crystal orientation and load mode on fatigue crack initiation and growth were studied. The fracture surfaces of the single crystals were characterized by a cleavage-like appearance and cracking occurred either on a single {111} plane or on multiple {111} planes irrespective of whether mode I or mixed mode I/II loadings were applied. It was found that the crack initiation and growth behaviour are dependent on both crystal orientation and applied loading mode. The cracking behaviour predicted by three mixed mode fracture criteria (MTS, SED and G criteria) in polycrystalline materials under mixed mode loading can be understood from the present results on single crystals.","authors":[],"categoryName":"|","doi":"","fpage":"883","id":"3da3bf8d-c448-410c-b3da-e30b87030a44","issue":"6","journal":{"abbrevTitle":"F&FOEM&S","id":"04d17cf7-69ae-4c5c-a2e8-0caa835d6fbb","issnPpub":"8756-758X","publisherId":"F&FOEM&S","title":"Fatigue & Fracture of Engineering Materials & Structures"},"keywords":[{"id":"f13f57e4-6428-409a-a6bf-e8cbf6687955","keyword":"fatigue cracking;mixed mode loading;crystallographic orientation;resolved shear stress;Ni3Al(CrB) single crystals;growth;alloy","originalKeyword":"fatigue cracking;mixed mode loading;crystallographic orientation;resolved shear stress;Ni3Al(CrB) single crystals;growth;alloy"}],"language":"en","publisherId":"8756-758X_1997_6_1","title":"Mode I and mixed mode I/II fatigue cracking in Ni3Al(CrB) single crystals","volume":"20","year":"1997"},{"abstractinfo":"We have observed an interface vibrational mode in CdSe/ZnTe superlattices (SL's) by Raman scattering. The frequency of this interface mode lies above the optical-phonon bands of bulk CdSe and ZnTe compounds, and the ion displacements in the mode are sharply localized at the Zn-Se interfaces of the SL's. When the force constants of all four kinds of bonds in the SL's are taken to have thc same values as in the corresponding bulk compounds, the frequency of this interface mode, 222 cm-1, calculated using the linear-chain model is consistent with the experimental result, 222 cm-1. Both the smaller masses and the larger force constants of the interface bonds in the SL's rather than the mass effect alone, suggested previously, favor the appearance of the interface modes.","authors":[],"categoryName":"|","doi":"","fpage":"12141","id":"932a5037-45e9-4370-91b2-5b735f35123d","issue":"20","journal":{"abbrevTitle":"PRB","id":"41d73232-e732-4216-a5f7-4b352bb955cf","issnPpub":"0163-1829","publisherId":"PRB","title":"Physical Review B"},"keywords":[{"id":"bab67aea-9ead-4664-a56c-9855f187bd1a","keyword":"phonons","originalKeyword":"phonons"}],"language":"en","publisherId":"0163-1829_1992_20_1","title":"INTERFACE VIBRATIONAL-MODE IN CDSE/ZNTE SUPERLATTICES","volume":"45","year":"1992"},{"abstractinfo":"The thin foil specimen of a ferrite-austenite duplex stainless steel was tensiled under transmis- sion electron microscope(TEM).It was found that both in ferrite and austenite the local deformation band at crack tip was formed near to the crack propagating direction.Its forma- tion was related with the crack tip Schmid factor,dislocation shielding,latent hardening and hardening coefficient.When the crack tip emitted dislocations to a slip system by the action of pure mode Ⅱ stress resolute,and the decreasing rate of hardening coefficient was suitable,lo- cal deformation band was easy to form.","authors":[{"authorName":"YAO Kefu University of Science and Technology Beijing","id":"57ccead7-9d11-4e85-91ed-a16a7e4d7d1c","originalAuthorName":"YAO Kefu University of Science and Technology Beijing"},{"authorName":"Beijing","id":"8fde0e6f-fa1b-44b8-8fa5-b2b4582526c4","originalAuthorName":"Beijing"},{"authorName":"ChinaTANG Naivong CHEN Nanping Tsinghua University","id":"eea8cc24-b6d7-44e4-aef3-cfd96847102d","originalAuthorName":"ChinaTANG Naivong CHEN Nanping Tsinghua University"},{"authorName":"Beijing","id":"215e1912-c540-4acb-9a1a-d377717127b3","originalAuthorName":"Beijing"},{"authorName":"China","id":"7394117d-4506-4dab-9580-7d7e4be2b62e","originalAuthorName":"China"}],"categoryName":"|","doi":"","fpage":"147","id":"832eda0e-86f0-41ab-9d06-f304deaeb125","issue":"3","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":"acdde4d5-1153-4e63-b3b9-3a5d2289f7f7","keyword":"crack tip","originalKeyword":"crack tip"},{"id":"7a668516-0c01-4dc2-a867-9a03e0f71b9d","keyword":"null","originalKeyword":"null"},{"id":"0294b5e6-92f6-4558-985c-5624771608f4","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1992_3_5","title":"TEM OBSERVATION OF LOCAL DEFORMATION BAND AT CRACK TIP","volume":"5","year":"1992"},{"abstractinfo":"There are significant effects of process parameters on internal qualities of bloom, and these process parameters are as follows: position and reduction amount, reduction distribution, reduction rate, and so on. Developing a control model is the key to apply soft reduction technology successfully. As the research object, 360 mm×450 mm bloom caster in PISCO (Panzhihua Iron and Steel Co) has been studied, and the research method for control model of dynamic soft reduction has been proposed. On the basis of solidification and heat transfer model, the position of soft reduction and reduction distribution of each frame are determined according to the bloom temperature distribution and solid fraction in bloom center calculated. Production practice shows that the ratio of center porosity which is less than or equal to 10, increased to 9727%, ratio of central segregation which is less than or equal to 05, increased to 8091%, and ratio of central carbon segregation index which is more than or equal to 110, decreased to 4% with the applying model of dynamic soft reduction.","authors":[{"authorName":"CHEN Yong","id":"474ef6e9-68c3-42e6-b216-a84530c9025a","originalAuthorName":"CHEN Yong"},{"authorName":"JI Cheng","id":"fc51be4c-35fc-4acb-8e4d-7850251e7bbc","originalAuthorName":"JI Cheng"},{"authorName":"ZHU Miaoyong","id":"82350722-1fb0-47d9-8f4b-7f79dbf86b1d","originalAuthorName":"ZHU Miaoyong"},{"authorName":"WU Guorong","id":"79fb43d1-5104-44fd-9c75-2c1ef2fe4791","originalAuthorName":"WU Guorong"}],"categoryName":"|","doi":"","fpage":"31","id":"74aca0d0-8adc-44a6-a6c8-4f51aeabb3e9","issue":"9","journal":{"abbrevTitle":"GTYJXBYWB","coverImgSrc":"journal/img/cover/GTYJXBEN.jpg","id":"1","issnPpub":"1006-706X","publisherId":"GTYJXBYWB","title":"钢铁研究学报(英文版)"},"keywords":[{"id":"fbbca9d7-8633-41d4-bb57-91c04997316d","keyword":"bloom continuous casting;dynamic soft reduction;control model;center porosity;central segregation","originalKeyword":"bloom continuous casting;dynamic soft reduction;control model;center porosity;central segregation"}],"language":"en","publisherId":"1006-706X_2010_9_6","title":"Control Model of Bloom Dynamic Soft Reduction","volume":"17","year":"2010"}],"totalpage":138,"totalrecord":1374}