Keyhole dynamics and morphology visualized by in-situ X-ray imaging in laser melting of austenitic stainless steel
作者: Masanori MiyagiJiye Wang
作者单位: 1Research & Development Group, Hitachi, Ltd., 7-1-1 Omika, Hitachi, Ibaraki, 319–1292, Japan
2Research & Development Division, Hitachi America, Ltd., 34500 Grand River Avenue, Farmington Hills, MI, 48335, USA
刊名: Journal of Materials Processing Tech., 2020, Vol.282
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmatprotec.2020.116673
关键词: Laser meltingKeyholeX-ray observationStainless steel
原始语种摘要: Abstract(#br)In-situ X-ray observation was used to investigate the effect of process conditions on keyhole behavior in laser melting with austenitic stainless steel. It was confirmed that the keyhole depth and width increased, and the fluctuation in the keyhole depth decreased as laser power increased. With no shielding gas, there was a large fluctuation in keyhole depth. This is presumed due to the attenuation of laser power and change in laser beam quality by the interaction between laser and metal vapor. We found that when the laser traverse speed increased relative to the keyhole-forming speed, the inclination of the keyhole decreased, and the width and opening of the keyhole expanded. As the defocus distance increased, the inclination of the keyhole decreased and the fluctuation in...
全文获取路径: Elsevier  (合作)
影响因子:1.953 (2012)

  • keyhole 键孔
  • stainless 不锈的
  • laser 激光
  • steel 
  • austenitic 奥氏体的
  • morphology 形态学
  • melting 熔化
  • shielding 屏蔽
  • inclination 倾角
  • imaging 图像形成