A new multi-element beta titanium alloy with a high yield strength exhibiting transformation and twinning induced plasticity effects

被引：119
作者：
Sadeghpour, S. [1 ,2 ]
Abbasi, S. M. [1 ]
Morakabati, M. [1 ]
Kisko, A. [2 ]
Karjalainen, L. P. [2 ]
Porter, D. A. [2 ]
机构：
[1] Malek Ashtar Univ Technol, Metall Mat Res Ctr, Tehran, Iran
[2] Univ Oulu, Ctr Adv Steels Res, Oulu 90014, Finland
来源：
SCRIPTA MATERIALIA | 2018年 / 145卷
关键词：
Titanium alloy; Deformation structure; Strain hardening; Martensitic phase transformation; Twinning; TI-NB ALLOYS; DEFORMATION MODE; MECHANICAL-PROPERTIES; ELASTIC PROPERTIES; PHASE-STABILITY; DESIGN; DUCTILITY; MICROSTRUCTURE; BEHAVIOR; STEELS;
D O I：
10.1016/j.scriptamat.2017.10.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new multi-element beta titanium alloy Ti-3Al-5Mo-7V-3Cr (Ti-3573) was designed using the d-electron method based on a commercial alloy. An excellent yield strength of 750 MPa, and a high strain hardening rate (SHR) of 1800 MPa as well as 19% uniform elongation are some of the formidable mechanical characteristics exhibited by the designed alloy. Microstructural evaluation suggested that simultaneous transformation and twinning induced plasticity is responsible for the enhanced tensile properties. The results show that with precisely controlled alloying, it is possible to increase the yield strength with solid solutioning and still keep the SHR and ductility high enough. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：104 / 108
页数：5
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