Microstructure and electrochemical corrosion behavior of selective laser melted Ti-6Al-4V alloy in simulated artificial saliva

被引：31

作者：

Ju, Jiang ^{[1
,2
]}

Li, Jing-jing ^{[1
,2
]}

Jiang, Min ^{[1
]}

Li, Meng-ya ^{[3
]}

Yang, Li-xiang ^{[1
]}

Wang, Kai-ming ^{[4
]}

Yang, Chao ^{[1
,2
]}

Kang, Mao-dong ^{[1
,2
]}

Wang, Jun ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Inst Solidificat Sci & Technol, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China

[3] Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China

[4] Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2021年 / 31卷 / 01期

基金：

中国国家自然科学基金; 国家重点研发计划; 中国博士后科学基金;

关键词：

Ti-6Al-4V alloy; selective laser melting; microstructure; electrochemical corrosion behavior;

D O I：

10.1016/S1003-6326(20)65485-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Ti-6Al-4V alloy was fabricated via selective laser melting (SLM) to improve its corrosion resistance for implant. The microstructure and electrochemical corrosion behavior were investigated using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), electrochemical test and contact angle test. It can be found that the as-selective laser melted (as-SLMed) Ti-6Al-4V alloys show beta columnar microstructure in building direction and nearly circular checkerboard microstructure in scanning direction, while the wrought and wrought+HT samples exhibit equiaxed microstructure. The as-SLMed Ti-6Al-4V alloy exhibits better corrosion resistance than the wrought and wrought+HT samples due to hydrophobicity, high grain boundary density and uniform distribution of alloying elements in simulated artificial saliva at 37 degrees C.

引用

页码：167 / 177

页数：11

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