In-situ investigation of stress-induced martensitic transformation in Ti-Nb binary alloys with low Young's modulus

被引：54
作者：
Chang, L. L. [1 ]
Wang, Y. D. [2 ,3 ]
Ren, Y. [4 ]
机构：
[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat SKLAMM, Beijing 10081, Peoples R China
[3] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol CICST, Beijing 10081, Peoples R China
[4] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 651卷
基金：
中国国家自然科学基金;
关键词：
Ti-Nb alloys; Microstructure; Mechanical properties; Martensite transformation; OMEGA-PHASE; MECHANICAL-PROPERTIES; HEAT-TREATMENT; SUPERELASTICITY; PRECIPITATION; BEHAVIOR;
D O I：
10.1016/j.msea.2015.11.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Microstructure evolution, mechanical behaviors of cold rolled Ti-Nb alloys with different Nb contents subjected to different heat treatments were investigated. Optical microstructure and phase compositions of Ti-Nb alloys were characterized using optical microscopy and X-ray diffractometre, while mechanical behaviors of Ti-Nb alloys were examined by using tension tests. Stress-induced martensitic transformation in a Ti-30 at%Nb binary alloy was in-situ explored by synchrotron-based high-energy X-ray diffraction (HE-XRD). The results obtained suggested that mechanical behavior of Ti-Nb alloys, especially Young's modulus was directly dependent on chemical compositions and heat treatment process. According to the results of HE-XRD, alpha ''-V1 martensite generated prior to the formation of alpha ''-V2 during loading and a partial reversible transformation from alpha ''-V1 to beta phase was detected while alpha ''-V2 tranformed to beta completely during unloading. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：442 / 448
页数：7
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