研究了Ti-47Al-2Cr-1Nb (at%) 合金的等温变形复合热机械处理晶粒细化工艺及显微组织变化特征.通过两次等温变形(变形量70%以上)加中间热处理,破碎了粗大的铸态层片晶团,热处理后得到均匀的等轴γ细晶.变形态的微观组织显示,等温变形过程中发生了动态再结晶,使流变曲线出现明显的流变软化.
参考文献
| [1] | KIM Y W .Ordered Intermetallic Alloy[J].Journal of The Minerals,Metals & Materials Society,1994,46(07):30. |
| [2] | LIPSITT H A .The deformation and fracture of TiAl at elevated temperature[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1975,6:1991. |
| [3] | NOBUKI M .Deformation of TiAl intermetallic compound at elevated temperature[J].Journal of the Japan Institute of Metals,1986,5(07):840. |
| [4] | KASAHARA K;HASHIMOTO K;DOI H .Oxidation behavior of intermetallic compound TiAl at high temperature[J].Journal of the Japan Institute of Metals,1989,53(01):58. |
| [5] | KIM Y W;DIMIDUK D M .Progress in the understanding of gamma titanium aluminides[J].Journal of The Minerals,Metals & Materials Society,1991,43(06):40. |
| [6] | KIM Y W .Microstructural evolution and mechanical properties of a forged gamma titanium aluminide alloy[J].Acta Metallurgica Et Materialia,1992,40:1121. |
| [7] | KEOPEE C;BARTELS A .General aspects of the thermal-mechanical treatment of two-phase intermetallic TiAl compounds[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1993,24(08):1795. |
| [8] | 黄伯云,贺跃辉,曲选辉,陈小群.快速变形法细化TiAl晶粒[J].中国有色金属学报,1996(02):52-55. |
| [9] | 陈令晖,黄伯云,曲选辉,谢佑卿,贺跃辉,曹鹏.TiAl基合金的复合热机械处理[J].中国有色金属学报,1996(01):120-126. |
| [10] | 贺跃辉;黄伯云.包套锻复合热机械处理技术中TiAl基合金显微组织细化的机理[J].中南工业大学学报(自然科学版),1997(04):355. |
| [11] | 陈小群;黄伯云 .高延性TiAl 合金的微观组织特征[J].金属学报,1997,33(07):683. |
| [12] | MILLET J C F .Assessment and modeling of isothermal forging of intermetallic compounds, Part1-TiAl[J].Materials Science and Technology,1999,15:697. |
| [13] | FUCHS G E .The effect of processing on the hot workability of Ti-48Al-2Nb-2Cr alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1997,28:2543. |
| [14] | KIM Y W .Intermetallic alloys based on gamma titanium aluminide[J].Journal of The Minerals,Metals & Materials Society,1989,4(07):24. |
| [15] | 前田尚志 .金属间化合物の恒温锻造法[J].金属学报,1992,62(10):54. |
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%