Drastic improvement in elongation and impact toughness of Ti-Al-V-Mo-Zr alloy tube via three-step heat treatment

被引：11

作者：

Chi, Guangfang ^{[1
]}

Liu, Huiqun ^{[1
]}

Yi, Danqing ^{[1
]}

机构：

[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 284卷

关键词：

Metals and alloys; Elongation; Impact toughness; Grain boundaries; Microstructure;

D O I：

10.1016/j.matlet.2020.128925

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The limited ductility and impact toughness of titanium alloys is a critical issue that limits the use of titanium alloys in the oil and gas industry. In this study, we obtained the highest impact toughness (55.7 J/cm(2)) for an extruded Ti-Al-V-Mo-Zr alloy tube using a three-step heat treatment. The microstructure and corresponding mechanical properties of the Ti-Al-V-Mo-Zr alloy tube were studied. We achieved significantly improved elongation (69%) and impact toughness (51%) of the Ti-Al-V-Mo-Zr alloy, contribute to the mixing coarse equiaxed and lamellar microstructure. The special heat treatment and bending lamellar microstructures play an important role in this significant phenomenon. (c) 2020 Elsevier B.V. All rights reserved.

引用

页数：4

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