Effect of Substrate Preheating, Remelting, In-situ Presintering on Crack Formation of Ti-47Al-2Cr-2Nb Fabricated by Selective Laser Melting

被引：0

作者：

Shi, Xuezhi ^{[1
]}

Huang, Yunfeng ^{[1
]}

Li, Zhenhua ^{[1
]}

Feng, Wuwei ^{[1
]}

Ma, Shuyuan ^{[2
]}

机构：

[1] School of Marine Engineering Equipment, Zhejiang Ocean University, Zhoushan,316022, China

[2] School of Mechanical Engineering, Beijing Institute of Technology, Beijing,100081, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2022年 / 51卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Aluminum alloys - Chromium alloys - Niobium alloys - Preheating - Surface properties - Titanium alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The methods of substrate preheating, remelting and in-situ presintering were proposed to fabricate Ti-47Al-2Cr-2Nb by selective laser melting (SLM). The effects of these approaches on the formation of cracks and surface quality were investigated. The results indicate that substrate preheating, remelting and in-situ presintering powder can reduce the formation of cracks to a certain extent, and the density is increased by 1.71%~4.34%. Remelting contributes to improvement of the surface quality but greatly reduces the productivity. In addition, the combination of substrate preheating and in-situ presintering can effectively prevent the occurrence of cracks, and the density is over 99%. Copyright © 2022, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.

引用

页码：2739 / 2744