Tuning the stress induced martensitic formation in titanium alloys by alloy design

被引：43
作者：
Li, C. [1 ,2 ]
Chen, J. H. [1 ]
Wu, X. [2 ,3 ]
Wang, W. [4 ]
van der Zwaag, S. [2 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Delft Univ Technol, Fac Aerosp Engn, NL-2629 HS Delft, Netherlands
[3] Mat Innovat Inst M2i, NL-2628 CD Delft, Netherlands
[4] Chinese Acad Sci, Inst Met Res, Shenyang 110015, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2012年 / 47卷 / 09期
关键词：
DEFORMATION-INDUCED MARTENSITE; TENSILE PROPERTIES; BETA; TRANSFORMATION; AL; BEHAVIOR; NB; ZR;
D O I：
10.1007/s10853-012-6263-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two novel titanium alloys, Ti-10V-2Cr-3Al and Ti-10V-1Fe-3Al (wt%), have been designed, fabricated, and tested for their intended stress-induced martensitic (SIM) transformation behavior. The results show that for Ti-10V-1Fe-3Al the triggering stress for SIM transformation is independently affected by the beta domain size and beta phase stability, when the value of the molybdenum equivalent is higher than similar to 9. The triggering stress was well predicted using the equations derived separately for the commercial Ti-10V-2Fe-3Al alloy. For samples containing beta with a lower molybdenum equivalence value, pre-existing thermal martensite is also present and this was found to have an obstructive effect on SIM transformation. In Ti-10V-2Cr-3Al, the low diffusion speed of Cr caused local gradients in the Cr level for many heat treatments leading even to martensite free zones near former beta regions.
引用
收藏
页码：4093 / 4100
页数：8
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