Microstructure and property evaluation of TA15 titanium alloy fabricated by selective laser melting after heat treatment

被引：41

作者：

Huang, Shuai ^{[1
]}

Sun, Bingbing ^{[1
]}

Guo, Shaoqing ^{[1
]}

机构：

[1] Beijing Inst Aeronaut Mat, 3D Printing Res & Engn Technol Ctr, Beijing 100095, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2021年 / 144卷

关键词：

Selective laser melting; TA15; alloy; Microstructure; Mechanical property; TI-6AL-4V; EVOLUTION; BEHAVIOR;

D O I：

10.1016/j.optlastec.2021.107422

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Selective laser melting has been used to fabricate TA15 titanium alloy, and its microstructure and property after heat treatment at different building directions have been analyzed. As-received TA15 was composed of a small amount of beta and a large amount of acicular alpha MODIFIER LETTER PRIME. The heat-treated TA15 was a typical basket-weave structure and composed of alpha + beta phase. After heat treatment, the acicular martensite transformed into alpha phases, and their amount and width increased. Microstructural evaluation promoted the improvement of ductile property. Although the tensile and yield strength of samples decreased, while their elongation increases to 46.7% after 800 degrees C heat treatment. Fracture morphology showed that the size and depth of dimple increased as heattreatment time increased, indicating the toughness of TA15 had improved.

引用

页数：7

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