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] Zhejiang Ocean Univ, Sch Marine Engn Equipment, Zhoushan 316022, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

来源：

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：

substrate preheating; remelting; in-situ presintering; crack; surface; selective laser melting (SLM); ALLOY; MICROSTRUCTURE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

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%similar to 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%.

引用

页码：2739 / 2744

页数：6

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