石学智,黄赟锋,李振华,冯武卫,马树元.基板预热、重熔、预烧结对激光选区熔化Ti-47Al-2Cr-2Nb裂纹形成的影响[J].稀有金属材料与工程,2022,51(8):2739~2744.[Shi Xuezhi,Huang Yunfeng,Li Zhenhua,Feng Wuwei,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.]
基板预热、重熔、预烧结对激光选区熔化Ti-47Al-2Cr-2Nb裂纹形成的影响
投稿时间:2021-07-10  修订日期:2022-07-15
中文关键词:  基板预热  重熔  预烧结  裂纹  表面  激光选区熔化(SLM)
基金项目:
中文摘要:
      为了抑制激光选区熔化(SLM)制备Ti-47Al-2Cr-2Nb合金时裂纹的形成,研究了基板预热、重熔和预烧结等方法对裂纹形成和表面质量的影响。结果表明,基板预热、重熔和预烧结可以在一定程度上减少裂纹的形成,致密度提高了1.71%~4.34%;重熔有助于改善表面质量,但会明显降低生产效率;另外,基板预热与预烧结相结合,能更有效地防止裂纹的产生,致密度超过99%。
Effect of Substrate Preheating, Remelting, In-situ Presintering on Crack Formation of Ti-47Al-2Cr-2Nb Fabricated by Selective Laser Melting
英文关键词:substrate preheating  remelting  in-situ presintering  crack  surface  selective laser melting (SLM)
英文摘要:
      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%.
作者单位E-mail
石学智 浙江海洋大学 海洋工程装备学院 shixuezhi@zjou.edu.cn 
黄赟锋 浙江海洋大学 海洋工程装备学院 980515587@qq.com 
李振华 浙江海洋大学 海洋工程装备学院  
冯武卫 浙江海洋大学 海洋工程装备学院  
马树元 北京理工大学 机械与车辆学院  
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