利用Gleeble1500热/力模拟机研究了Ti14合金在应变速率为5×10-3-5 s-1,变形温度为1273~1423 K,变形量为60%条件下的半固态塑性变形行为.分析了合金流变应力与应变速率、变形温度之间的关系,根据分析结果建立了Ti14合金半固态变形流变本构方程,结果表明:合金在半固态条件下存在明显的屈服现象,流变应力受温度和应变速率影响较大,稳态流变应力和峰值流变应力随温度的增加而减小,相同温度下,流变应力随应变速率的增加而增加,分析可能是由于液相含量和分布对初生α-Ti骨架的解聚作用所致.
参考文献
[1] | Lutjering G;Williams J C.Titanium[M].Springer-Verlag,2003:383-413. |
[2] | Lian Z.;Luo GZ. .Research and development of titanium in China[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):294-298. |
[3] | 张喜燕;赵永庆;白晨光.钛合金及其应用[M].北京:化学工业出版社,2005:161-189. |
[4] | Y.Q. Zhao;W.L. Wu;X.D. Ma;H. Chang;H.Y. Yang;H. Wu;L. Feng .Semi-solid oxidation and deformation behavior of Ti14 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):315-319. |
[5] | Y.Q. Zhao;W.L. Wu;H. Chang .Research on microstructure and mechanical properties of a new α + Ti_2Cu alloy after semi-solid deformation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):181-186. |
[6] | Zhao Y Q;Zhu K Y;Zhao X M .A low cost Ti alloy[P].Chinese patent,97112302.0,1997. |
[7] | Zhao Y Q;Zhu K Y;Li Y .A low cost near β-Ti alloy[P].Chinese patent:China,02101190.7,2002. |
[8] | Chen Y N;Wei J F;Zhao Y Q .Compressuve deformation and forging behavior of Ti14 alloys in semi-solid state[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2009,520:16-22. |
[9] | Chen Y N;Wei J F;Zhao Y Q .Effect of deformation parameters on the deformation behavior of Ti14 alloy during semi-solid compression[J].Materials Science Forum,2009,620 -622:287-290. |
[10] | Chen C P;Tsao C Y A .Semi-solid deformation of non-dendritic structures-I phenomenological behavior[J].Acta Materialia,1996,45(05):1955-1968. |
[11] | Chen Y N;Wei J F;Zhao Y Q .Effect of semi-solid forging temperature on the microstructure and mechanical properties of Ti14 alloy[J].Journal of Alloys and Compounds,2009,487(1 -2):314-320. |
[12] | K. Hu;A.B. Phillion;D.M. Maijer .Constitutive behavior of as-cast magnesium alloy Mg-Al3-Zn1 in the semi-solid state[J].Scripta materialia,2009(6):427-430. |
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