The Formation of Humps and Ripples During Selective Laser Melting of 316l Stainless Steel
作者: Pingmei TangSen WangHuamei DuanMujun LongYandong LiShuqian FanDengfu Chen
刊名: JOM, 2020, Vol.72 (3), pp.1128-1137
来源数据库: ProQuest Journal
原始语种摘要: Humps and ripples are typical surface morphologies obtained in the selective laser melting processes and have an important influence on the surface quality of the fabricated parts. In this study, a three-dimensional powder-scale model is presented to investigate the molten behavior and the resulting hump and ripple formation processes. The results showed that a periodic separation of the molten pool and the associated solidification shrinkage of the molten liquid owing to the surface tension caused the periodic humps on the scan track at a low input energy density. Obtaining a continuous molten pool with an extended duration of the liquidus molten pool and a large flow intensity was conducive to alleviating the humps. Additionally, the molten pool had periodic oscillations due to the...
全文获取路径: ProQuest  (合作)
影响因子:0.986 (2012)

  • molten 熔化的
  • periodic 周期的
  • solidification 凝固
  • liquidus 液相线
  • fabricated 制造
  • shrinkage 收缩
  • dimensions 面积
  • liquids 液体
  • track 径迹
  • reliability 可靠性