TiAl合金密度小、高温性能优异，自20世纪50年代以来已发展到第三代。介绍了TiAl合金的性能特点、发展历程，真空感应熔炼、真空自耗电弧熔炼、等离子冷床炉熔炼等熔炼TiAl合金方法的优缺点，以及国内外TiAl合金的制备情况；提出TiAl合金熔炼过程中存在的问题主要是宏观与微观偏析，应从原料加入方式、原料纯度及熔炼工艺等方面进行改进；此外，对TiAl合金在航空航天、汽车工业等领域的应用现状进行了概括，指出TiAl合金近期的研究重点是大尺寸铸锭的均匀化控制。
TiAl alloy has low density and good performance at high temperature , and has developed to the third gener-ation since the 1950 s.The performance feature , development process , preparation conditions at home and abroad , and the traditional melting methods ( vacuum induction melting , vacuum arc melting and plasma melting ) of TiAl alloy were also introduced .Then the main problems in the smelting process of TiAl alloy were indicated to be macro segrega -tion and micro segregation , and should be improve through adding method and purity of raw material and melting process control .The application status of TiAl alloy in the fields of aviation , aerospace and automobile industry were summarized, and the development trend of TiAl alloy in the near future was homogenizing control of large size TiAl alloy ingots .
参考文献
| [1] | Kim Y W.Role of niobium in the process of gamma alloy development, niobium for high temperature applications[A].Warrardale:TMS,2004:125-137. |
| [2] | 李金山,张铁邦,常辉,寇宏超,周廉.TiAl基金属间化合物的研究现状与发展趋势[J].中国材料进展,2010(03):1-5. |
| [3] | Zhang W J;Liu Z C;Chen G L .Dislocation stucture in a Ti-45at.%Al-10at.%Nb alloy deformed at room temperature[J].Philosophical Magazine A:Physics of Condensed Matter Defects and Mechanical Properties,1999,79(05):1073-1078. |
| [4] | 陈玉勇,肖树龙,孔凡涛.高温钛合金及TiAl金属间化合物的精密铸造技术及应用前景[J].金属学报,2002(z1):39-44. |
| [5] | 史耀君,杜宇雷,陈光.高铌钛铝基合金研究进展[J].稀有金属,2007(06):834-839. |
| [6] | Hellwig A;Palm M;Inden G .Phase equilibria in the Al-Nb-Ti system at high temperatures[J].INTERMETALLICS,1998,6(02):79-94. |
| [7] | 李书江,王艳丽,林均品,林志,陈国良.高铌钛铝合金的制备工艺[J].航空材料学报,2004(01):12-16. |
| [8] | Tetyukhin V V;Levin I V;Shibanov A S.Process develop-ment and quality evaluation of large size wroughttplates from titanium intermetallide base alloy (γalloy)[A].Hamburg:Wi-ley-Vch,2003 |
| [9] | 林均品,陈国良.TiAl基金属间化合物的发展[J].中国材料进展,2009(01):31-37. |
| [10] | 陶辉锦,彭坤,谢佑卿,贺跃辉,尹志民.Ti-Al金属间化合物脆性问题的研究进展[J].粉末冶金材料科学与工程,2007(06):330-336. |
| [11] | Chen G L;Zhang W;Wang Y.Ti-Al-Nb interme-tallic alloys based on the ternary intermetallic compound[A].,1993 |
| [12] | 黄旭,李臻熙,黄浩.高推重比航空发动机用新型高温钛合金研究进展[J].中国材料进展,2011(06):21-27. |
| [13] | Gilchrist A;Pollock T M.Cast gamma titanium aluminides for low pressure turbine blade:a design case study for inter-metallics[A].Warrardale:TMS,2001:1-11. |
| [14] | Nathal M .Glenn takes a bow for impact on GEnx engine[EB/OL].http://www.nasa.gov/centers/glenn/news/AF/2008/JulyOS_ GEnx.html,2013-10-15. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%