Microstructure and tensile properties of a multi-alloyed α plus β titanium alloy Ti4.5Al10.5V3Fe

被引：13

作者：

Feng, Qisheng ^{[1
,2
,3
]}

Duan, Baohua ^{[1
,2
,3
]}

Jiao, Lina ^{[1
,2
,3
]}

Chen, Guangyao ^{[1
,2
,3
,4
]}

Zou, Xingli ^{[1
,2
,3
,4
]}

Lu, Xionggang ^{[1
,2
,3
,4
]}

Li, Chonghe ^{[1
,2
,3
,4
]}

机构：

[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Shanghai Key Lab Adv Ferrometallurgy, Shanghai 200444, Peoples R China

[3] Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200444, Peoples R China

[4] Shanghai Special Casting Engn Technol Res Ctr, Shanghai 201605, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2023年 / 295卷

基金：

中国国家自然科学基金;

关键词：

plus ? titanium alloy; CALPHAD; Heat treatment; Microstructure; Tensile properties; MECHANICAL-PROPERTIES; HIGH-STRENGTH; PHASE; EVOLUTION; TOUGHNESS; BEHAVIOR; ELEMENTS; DESIGN; SYSTEM;

D O I：

10.1016/j.matchemphys.2022.127110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the thermodynamic database of the Ti-Al-Fe-V quaternary system, a novel alpha + beta titanium alloy, Ti-4.5Al-10.5V-3Fe, with greater performance was developed by combining CALPHAD and Mo equivalent method. The microstructure shows that this alloy is composed of alpha and beta phases in both rolled and heat treatment states, which is in line with the theoretical expectation. The tensile properties of this alloy were tested at room tem-perature, and the tensile strength (sigma b) and elongation (EI) achieved 1085.1 MPa and 15.5%, respectively. Compared with Ti-1023 alloy (Ti-10V-2Fe-3Al), the developed Ti-4.5Al-10.5V-3Fe alloy has better properties. The fracture morphology was analyzed and the results show that the alloy is plastic fracture. The Ti-4.5Al-10.5V-3Fe alloy shows promising potential application prospects although more research is needed to further understanding this alloy. These results also provide theoretical support for further development of titanium alloys containing Al, Fe and V.

引用

页数：7

共 36 条

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