期刊文献+

热变形对高铌TiAl合金微观组织的影响 被引量:2

Effect of Hot Deformation on Microstructures of TiAl Alloy Containing High Nb
下载PDF
导出
摘要 通过对Ti 45Al 8 0Nb 0 2W 0 2B 0 1Y(原子百分数)合金的热压缩分析发现,其变形温度和变形速率对合金的真实应力-应变曲线以及变形后的组织有显著的影响。在低的变形温度和高的变形速率下,随应变量的增加合金呈现明显的软化现象,变形后存在大量的流线型组织,当变形温度达到1250℃、变形速率降到1×10-3s-1时,合金变形后的组织逐渐得到充分的再结晶,铸态组织得到明显的细化。 The deformation temperature and the strain rate have great effect on the true strain-stress curves and microstructures of Ti-45Al-8.0Nh 0. 2W-0.2B-0. 1 Y(atomicpercent) through the analyses of hot compression. Curves expresse strain-soften with the strain increasing at low deformation temperature and high strain tale. and the microstructures of TiAl alloys show much streamline shape. As the deformation temperature reaches 1250℃ and the strain rate reduces to 1 ×10^-3 s^-1. the microstructures become homogenous because of full recrystallization.
出处 《航空学报》 EI CAS CSCD 北大核心 2005年第1期107-110,共4页 Acta Aeronautica et Astronautica Sinica
基金 国家863计划(2002AA305209)资助项目
关键词 高铌TIAL合金 微观组织 热变形 TiAl alloy containing high Nb microstructure hot deformation
  • 相关文献

参考文献10

  • 1Fores F H, Suryanarayana C, Eliezer D. Review synthesis properties and applications of titanium aluminides[J]. J Mater Sci, 1992, 27: 5113-5140.
  • 2Bartolotta P, Barret J, Kelly T, et al. The use of cast Ti-48Al-2Cr-2Nb in jet engineer [J]. JOM, 1997, 49(5): 48-50.
  • 3Naka S, Thomas M, Khan T. Potential and prospects of some intermetallic compounds for structural applications[J]. TMS, 1992, 8: 291.
  • 4Kimura M, Hashimoto K, Morikawa H. Study on phase stable in Ti-Al-X systems at high temperatures[J]. Materials Science and Engineering, 1992, A152: 54.
  • 5Kim Y W. Intermetallic alloys based on gamma titanium aluminides[J]. J Met, 1989(1): 24.
  • 6Dimiduk D M. Gamma titanium aluminide alloys-an assessment with the competition of aerospace structural materials[J]. Mat Sci and Eng, 1999, 263 A(2):281-288.
  • 7Kamay S V, Gogia A K, Banerjee D. Effect of alloying elements and heat treatment on the fracture toughness of Ti-Al-Nb alloys[J]. Acta Mater, 1998, 46(1):239-251.
  • 8Kim Y W. Effects of microstructure on the deformation and fracture of γ-TiAl alloys[J]. Mater Sci Eng, 1995, A192/193: 519-525.
  • 9Yamaguchi M. Proceedings of a Symposium on Structural Intermetallics TMS[C]. 1993. 127-134.
  • 10Zhang S H. Principles of metal plastic deformation [M]. Changsha: Central South University of Technology Press, 1998. 81-85. (in Chinese)

同被引文献10

引证文献2

二级引证文献16

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部