Compression Performance of TC4 Titanium Alloy Lattice Structures Manufactured by Selective Laser Melting

被引：0

作者：

Lu Yichen ^{[1
]}

Sun Zhonggang ^{[1
]}

Guo Yanhua ^{[1
]}

Chang Lili ^{[2
]}

Shen Saigang ^{[2
]}

Xing Fei ^{[2
]}

Chang Hui ^{[1
]}

机构：

[1] Nanjing Technol Univ, Nanjing 210009, Peoples R China

[2] Nanjing ZhongKe Raycham Laser Technol Co Ltd, Nanjing 210009, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2020年 / 49卷 / 06期

关键词：

lattice structural materials; selective laser melting; TC4 titanium alloy; compression performance; FABRICATION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

More and more applications have been made to realize lightweight design of aerospace parts by additive manufacturing to form complex lattice structures. However, the lattice structure design and its performance evaluation were still lacking. In this study, the diamond structure was used as the substrate, and the specimens with different geometric parameters were designed for forming TC4 titanium alloy, aiming at lattice density and structure form. Compression tests were carried out on the formed specimens to study the differences of compressive properties between specimens with different sizes. The results show that the stress of the diamond lattice structure specimens will concentrate at the joint position and cause fracture after being loaded. Increasing cell density can alleviate the phenomenon of stress concentration, and increase specific strength. Reducing cell size and adding shell can make the stress uniform and improve the stability. Small cell size specimens are more sensitive to metallurgical defects such as spheroidization and pore, resulting in a decrease in strength.

引用

页码：2067 / 2075

页数：9

共 24 条

[1] Compression deformation behavior of Ti-6A1-4V alloy with cellular structures fabricated by electron beam melting [J].