Cyclic deformation response and strain-induced martensitic transformation of β single phase Ti-35421 alloy

被引：2
|
作者：
Sun, Yangyang [1 ]
Chen, Kai [1 ]
Alexandrov, I. V. [2 ]
Zhang, Hang [3 ]
Feng, Liang [1 ]
Ding, Jie [1 ]
Dong, Yuecheng [1 ]
Chang, Hui [1 ]
Zhou, Lian [1 ]
机构：
[1] Nanjing Tech Univ, Tech Inst Adv Mat, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China
[2] Ufa Univ Sci & Technol, Dept Mat Sci & Phys Met, Ufa 450008, Russia
[3] TSMC Nanjing Co Ltd, Nanjing 211800, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 169卷
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
Near beta titanium alloy; Single beta; Cyclic deformation; Strain-induced martensitic transformation; Microcracks nucleation; TITANIUM-ALLOY; FATIGUE BEHAVIOR; MECHANICAL-PROPERTIES; HIGH-STRENGTH; TENSILE PROPERTIES; DYNAMIC-RESPONSE; GRAIN-SIZE; TI ALLOY; MICROSTRUCTURE; STRESS;
D O I：
10.1016/j.ijfatigue.2022.107497
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Compared with bimodal microstructure, the low-cycle fatigue (LCF) behavior and cyclic deformation mechanism of a near beta Ti-3Al-5Mo-4Cr-2Zr-1Fe (Ti-35421) alloy with single beta were systematically investigated. Lower strength, but higher ductility and longer LCF life were found for Single beta. The nanoscale alpha '' martensite was detected in Single beta by selected area electron diffraction pattern. Besides, slips and strain induced martensitic transformation played the major deformation mechanisms in Single beta. Moreover, the existence of alpha '' contributed to the limit of microcracks nucleation in Single beta, which resulted in a better fatigue life.
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页数：14
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