利用大功率电子束物理气相沉积设备,采用单靶蒸镀方法制备厚度为0.3mm的自由态TiAl合金板,并对制备态样品进行不同温度(650～950℃)的真空退火处理.借助X射线衍射仪、扫描电子显微镜及透射电子显微镜分析退火处理对相组成及微观组织结构的影响.结果表明:Ti,Al元素饱和蒸气压的差异导致富Ti成分区和富Al成分区沿板材截面呈现交替变化,其组成相为α2-Ti3 Al,γ-TiAl和τ-TiAl2;在650～950℃温度区间退火24h后,由于Al向Ti中扩散,呈现明显的界面融混和晶粒粗化,导致有序相含量的降低,其层状结构的退化受到孔洞形成、晶粒长大以及层间吞噬的影响.
参考文献
| [1] | 钱九红;祁学忠.TiAl（γ）基钛合金的研究与应用[J].稀有金属,2002(6):477-482. |
| [2] | 陈玉勇;崔宁;孔凡涛.变形TiAl合金研究进展[J].航空材料学报,2014(4):112-118. |
| [3] | 熊华平;毛建英;陈冰清;王群;吴世彪;李晓红.航空航天轻质高温结构材料的焊接技术研究进展[J].材料工程,2013(10):1-12. |
| [4] | Xiping Cui;Guohua Fan;Lin Geng.Fabrication of fully dense TiAl-based composite sheets with a novel microlaminated microstructure[J].Scripta materialia,20125(5):276-279. |
| [5] | Xiaopeng Liang;Yong Liu;Huizhong Li;Ziyang Gan;Bin Liu;Yuehui He.An investigation on microstructural and mechanical properties of powder metallurgical TiAl alloy during hot pack-rolling[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2014:265-273. |
| [6] | M.R.Shagiev;O.N.Senkov;G.A.Salishchev.High temperature mechanical properties of a submicrocrystalline Ti-47Al-3Cr alloy produced by mechanical alloying and hot isostatic pressing[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20001/2(1/2):201-208. |
| [7] | Weaver ML.;Calhoun CW.;Garmestani H..Microstructure, texture, and mechanical properties of continuously cast gamma TiAl[J].Journal of Materials Science,200212(12):2483-2490. |
| [8] | K.N. Kulkarni;Y. Sun;A.K. Sachdev.Field-activated sintering of blended elemental γ-TiAl powder compacts: Porosity analysis and growth kinetics of Al_3Ti[J].Scripta materialia,201311(11):841-844. |
| [9] | M. R. SHAGIEV;G. A. SALISHCHEV;O. N. SENKOV.Properties of TiAl Sheet Pack-Rolled at Temperatures below 1000 deg C[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20036(6):1329-1339. |
| [10] | 江垚;贺跃辉;汤义武;李智;黄伯云.元素粉末冷轧成形及反应合成制备Ti-Al合金板材[J].中国有色金属学报,2004(9):1501-1507. |
| [11] | Jian-Guo Luo;Viola L. Acoff.Processing gamma-based TiAl sheet materials by cyclic cold roll bonding and annealing of elemental titanium and aluminum foils[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20061/2(1/2):334-342. |
| [12] | 孙彦波;马凤梅;肖文龙;马朝利.Ti-Al系金属间化合物基叠层结构材料的制备技术与组织性能特征[J].航空材料学报,2014(4):98-111. |
| [13] | Xiu Lin;Mingwei Li;Yesheng Zhong;Yijie Zhao;Yue Sun;Shuyuan Zhao;Xiaodong He.Microstructure and hardness of nanocrystalline ferritic ODS alloy foil with high oxide content fabricated by EBPVD[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2013Nov.1(Nov.1):679-682. |
| [14] | Movchan BA.;Marinski GS..Gradient protective coatings of different application produced by EB-PVD[J].Surface & Coatings Technology,19981/3(1/3):309-315. |
| [15] | 曾岗;李明伟;张庆茂;赫晓东;韩杰才.TiAl合金的电子束蒸发行为[J].稀有金属材料与工程,2007(10):1759-1762. |
| [16] | R.G. Reddy;A.M. Yahya;L. Brewer.Thermodynamic properties of Ti-Al intermetallics[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20012(2):223-227. |
| [17] | H. LUDTKE KNOEDLER;G. E. LUCAS;C. G. LEVI.Morphological Stability of Copper-Silver Multilayer Thin Films at Elevated Temperatures[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20035(5):1043-1054. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%