Effect of cold rolling process on microstructure and mechanical properties of high strength β titanium alloy thin sheets

被引:22
作者
Ma, Yan [1 ]
Du, Zhaoxin [1 ]
Cui, Xiaoming [1 ]
Cheng, Jun [2 ]
Liu, Guolong [1 ]
Gong, Tianhao [1 ]
Liu, Huimin [1 ]
Wang, Xiaopeng [3 ]
Chen, Yuyong [3 ]
机构
[1] Inner Mongolia Univ Technol, Sch Mat Sci & Engn, Hohhot 010051, Peoples R China
[2] Northwest Inst Nonferrous Met Res, Xian 710016, Shaanxi, Peoples R China
[3] Harbin Inst Technol, Natl Key Lab Precis Hot Forming Met, Harbin 150001, Heilongjiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Cold rolling process; High strength beta titanium alloy; Microstructure; Mechanical properties; TENSILE PROPERTIES; HEAT-TREATMENT; ALPHA-PHASE; GRAIN-SIZE; PRECIPITATION; DEFORMATION; BEHAVIOR; TEXTURE;
D O I
10.1016/j.pnsc.2018.10.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The microstructure and mechanical properties of Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe high strength titanium alloy sheets prepared by unidirectional cold rolling and two-step cross cold rolling were investigated. Results showed that the beta phase grains were refined significantly by cold rolling followed by solution treatment for a short time. Compared to unidirectional cold rolling, the short time solution treatment after two-step cross rolling could significantly reduce the non-uniformity of the microstructure of the alloy sheets. After aging treatment at 550 degrees C, the anisotropy of the mechanical properties still existed in the unidirectional rolled sheets, and the tensile strength was highest along the rolling direction. After solution and aging treatment, the anisotropy of the mechanical properties of the two-step cross rolling process sheet was not obvious than unidirectional cold rolling, and alloy had good strength and plasticity matching.
引用
收藏
页码:711 / 717
页数:7
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