通过测试不同淬火温度下的拉伸应力应变曲线、750～790℃淬火拉伸断裂后均匀变形区域的X射线衍射谱研究了淬火温度对Ti-3Al-4.5V-5Mo钛合金形变诱发马氏体的影响.结果表明:该合金在750～790℃淬火后拉伸变形机制为亚稳定β相变形诱发马氏体转变,790℃淬火合金在6.5%的变形量下亚稳定β相基本完全转变为α″马氏体.790℃淬火后拉伸形成应力诱发马氏体,β立方→α″σ;750℃淬火后拉伸形成应变诱发马氏体,β立方→β正方→α″ε.形变诱发α″相在拉伸变形时发生晶格重新取向:[010] α″方向平行于拉伸轴线,[100]α″方向垂直于拉伸轴线.
参考文献
| [1] | GROSDIDIER T;COMBRES Y;GAUTIER et al.Effect of microstructure variations on the formation of deformation-induced martensite and associated tensile properties in a β-metastable Ti alloy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2000,31A(04):1095-1106. |
| [2] | T. Grosdidier;M. J. Philippe .Deformation induced martensite and superelasticity in a β-metastable titanium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):218-223. |
| [3] | DUERIG T W;ALBRECHT J;RICHTER D et al.Formation and reversion of stress induced martensite in Ti-10V-2Fe-3Al[J].Acta Metallurgy,1982,30:2161-2172. |
| [4] | Gunawarman;Mitsuo Niinomi;Kei-ichi Fukunaga .Effect of Cooling Rate on Microstructure and Fracture Characteristics of #beta#-Rich #alpha# + #beta# Type Ti-4.5Al-3V-2Mo-2Fe Alloy[J].Materials transactions,2001(7):1339-1348. |
| [5] | NIINOMI M;KOBAYASHI T;INAGAKI I et al.The effect of deformation-induced transformation on the fracture toughness of commercial titanium alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1990,21A(06):1733-1744. |
| [6] | 黄明志;石德珂;金志浩.金属力学性能[M].西安:西安交通大学出版社,1986:2-3. |
| [7] | МАЛЬЦЕВМВ.ФазовыепревращениявтитановомсплавеВТ16 придеформации[J].ФизМетМеталловед,1990(12):97-103. |
| [8] | MAXWELL P C;GOLDBERG A;SHYNE J G .Stress-assisted and strain-induced martensites in Fe-Ni-C alloys[J].Metallurgical and Materials Transactions,1974,4:1305-1317. |
| [9] | TAMURA I .Deformation-induced transformation and transformation-induced plasticity in steels[J].Metal Science Journal,1982,16:245-253. |
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%