研究2种不同工艺制备的Ti60高温钛合金d300 mm棒材的显微组织及力学性能.结果表明:Ti60合金大棒材的显微组织靠近外表面的区域变形比较充分,显微组织均匀性较好,靠近心部区域a相的等轴化程度低,显微组织均匀性相对表面区域较差,这种差别会遗传到两相区的热处理态显微组织中;不同变形程度的大棒材显微组织尤其是a相的形貌略有差异,但除600 ℃轴向拉伸性能外,室温拉伸、蠕变性能差别很小,这主要是由于初生a相体积分数较低的缘故.
参考文献
| [1] | 张尚洲 .碳对Ti-60高温钛合金组织演变的影响[D].中国科学院金属研究所,2004. |
| [2] | FLOWER H M .Microstructural development in relation to hot working of titanium alloys[J].Materials Science and Technology,1990,6:1082-1092. |
| [3] | ES-SOUNI M .Creep deformation behavior of three high-temperature near α-Ti alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2001,2A:285-293. |
| [4] | Evans WJ. .Optimising mechanical properties in alpha+beta titanium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):89-96. |
| [5] | DOWSON A L;HOLLIS A C;BEAVERS C J .The effect of the alpha-phase volume fraction and stress ration on the fatigue crack growth characteristics of the near-alpha IMI 834 Ti alloys[J].International Journal of Fatigue,1992,14:261-270. |
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%