采用Gleeble-1500 热压缩模拟试验机进行压缩实验,在变形温度为1 100～1 250 ℃、应变速率为10-2～ 1 s-1的范围内,研究Ti-46Al-2Cr-4Nb-Y合金的高温变形行为,并基于动态材料模型,建立Ti-46Al-2Cr-4Nb-Y合金的加工图.结果表明:Ti-46Al-2Cr-4Nb-Y合金的高温变形流变应力对温度及应变速率敏感;流变应力随应变速率的增大而增大,随温度的升高而减小;动态再结晶是导致流变软化及稳态流变的主要原因;Ti-46Al-2Cr-4Nb-Y合金的安全热加工区域为温度1 200～1 230 ℃,应变速率10-2～10-1 s-1.
参考文献
| [1] | X.WU .Review of alloy and process development of TiAl alloys[J].Intermetallics,2006(10/11):1114-1122. |
| [2] | Edward A. Loria .Quo vadis gamma titanium aluminide[J].Intermetallics,2001(12):997-1001. |
| [3] | Prasad YVRK.;Seshacharyulu T. .Processing maps for hot working of titanium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):82-88. |
| [4] | C. Poletti;H. Dieringa;F.Warchomicka .Local deformation and processing maps of as-cast AZ31 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2009(1/2):138-147. |
| [5] | QYSZKOWSKI R;BYSTRZYCKI J .Hot deformation and processing maps of an Fe3Al intermetallic alloy[J].Intermetallics,2006,14:1231-1237. |
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