Effects of Oxygen Content in the Argon Shielding Gas on Microstructure and Mechanical Properties of Laser Deposition Manufactured TA15 Titanium Alloy

被引：0

作者：

Yang Guang ^{[1
]}

Feng Zhiguo ^{[1
]}

Qin Lanyun ^{[1
]}

Li Changfu ^{[1
]}

Ren Yuhang ^{[1
]}

Wang Wei ^{[1
]}

机构：

[1] Shenyang Aerosp Univ, Key Lab Fundamental Sci Natl Def Aeronaut Digital, Shenyang 110136, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2017年 / 46卷 / 06期

关键词：

oxygen content; laser deposition manufacturing; TA15 titanium alloy; mechanical properties; microstructure; HEAT-TREATMENT; BEHAVIOR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TA15 titanium alloy specimens were prepared by laser deposition manufacturing. The effects of oxygen content in the argon shielding gas on microstructure, fracture surface and mechanical properties of laser deposition manufactured TA15 titanium alloy have been investigated by optical microstructure (OM), scanning electron microscopy (SEM) and tensile testing. The results show that both as -deposited and annealed specimens microstructure are typically basket-weave microstructure without dramatic changes with the increasing of the oxygen content of the atmosphere. The tensile strength at room temperature of the deposited alloy gradually rises while the ductility decreases. Samples with the oxygen content of <5x10(-5) have the best comprehensive mechanical properties. Microhardness of the annealed samples is lower than that of the as -deposited, and they are gradually enhanced with the increasing of oxygen content. Room temperature tensile fracture mechanism changes from ductile fracture to semi -cleavage and semi-ductile fracture with the increasing of oxygen content.

引用

页码：1650 / 1655

页数：6

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