Quick Search:       Advanced Search
[Shi Xuezhi,Huang Yunfeng,Li Zhenhua,Feng Wuwei and Ma Shuyuan.Effect of Substrate Preheating, Remelting, In-situ Presintering on Crack Formation of Ti-47Al-2Cr-2Nb Fabricated by Selective Laser Melting[J].Rare Metal Materials and Engineering,2022,51(8):2739~2744.]
Effect of Substrate Preheating, Remelting, In-situ Presintering on Crack Formation of Ti-47Al-2Cr-2Nb Fabricated by Selective Laser Melting
Download Pdf  View/Add Comment  Download reader
Received:July 10, 2021  Revised:July 15, 2022
DOI:
Key words: substrate preheating  remelting  in-situ presintering  crack  surface  selective laser melting (SLM)
Foundation item:
Author NameAffiliation
Shi Xuezhi,Huang Yunfeng,Li Zhenhua,Feng Wuwei and Ma Shuyuan  
Hits: 32
Download times: 39
Abstract:
      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%.