Hot Workability of Orthorhombic Ti-22Al-11Nb-2Mo-1Fe Alloy

摘要：

The hot workability of orthorhombic Ti2AlNb-based Ti-22Al-llNb-2Mo-lFe alloy has been investigated by hot compression tests in the temperatures from 800 to 1100℃ with the strain rates of 0. 01 to 10 s-1. The effect of the starting microstructure on flow deformation showed that the higher flow stresses are obtained for the lamellar microstructure as compared to those for the equiaxed microstructure. The shear banding flow-localization-controlled failure and fracture during sub-transus hot compression have been found in lamellar or equiaxed microstructure of this alloy. The influences of hot compression variables on flow behaviors are discussed. The hot workability map of Ti-22Al-llNb-2Mo-lFe alloy has been investigated. The uniform deformation can be obtained in all of strain rate above 1000℃ and the lower strain rates at 950℃.

关键词： Hot workability hot compression deformation behavior orthorhombic Ti2 AINb alloy

作者: Yong Mao Masuo Hagiwara

作者单位: Department of Material Science and Engineering, School of Physical Science and Technology, Yunnan Un Research Center for Advanced Eco-Fitting Technology, Kyushu Institute of Technology, Kitakyushu 808-

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 1463-1466

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）