Influence of solution treatment on microstructural evolution and mechanical properties of a new titanium alloy

被引：6
作者：
Li, C. [1 ]
Li, M. [1 ]
Li, H. [1 ]
Chen, J. [1 ]
Xiao, H. [2 ,3 ]
机构：
[1] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Hunan, Peoples R China
[2] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Bodies, Changsha 410082, Peoples R China
[3] Hunan Univ, Hunan Prov Key Lab Intelligent Laser Mfg, Changsha 410082, Peoples R China
来源：
KOVOVE MATERIALY-METALLIC MATERIALS | 2020年 / 58卷 / 01期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
titanium alloy; solution treatment; microstructure; mechanical properties; INDUCED MARTENSITIC FORMATION; HEAT-TREATMENT; BEHAVIOR;
D O I：
10.4149/km_2020_1_41
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microstructural evolution and mechanical properties of a new titanium alloy Ti-4Al-3V-2Mo-1Fe (wt.%) were investigated in this paper. Both the alpha + beta and beta solution treatments were introduced to clarify the relationship between microstructures and properties. Results show that the microstructures and mechanical properties of the alloy vary with the solution temperature. With the increase of solution temperature, the alpha-phase fraction increases first and then decreases until it disappears completely. After a solid solution treatment at temperatures above 800 degrees C, the thermal stability of beta-phase decreases gradually, and martensitic transformation occurs. Solution treatment at a certain temperature can make the alpha-phase equiaxed. The mixed microstructure of alpha + beta martensite has good mechanical properties. Fracture observation shows that the failure mechanism of different specimens varies with the solution temperature.
引用
收藏
页码：41 / 48
页数：8
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