Microstructure and Microhardness of Laser Beam Welded Al-Mg-Mn-Zr-Er Joint

摘要：

In this work, the weldability of the alloy Al-Mg-Mn-Zr-Er with high power Nd:YAG laser has been tested. Concisely, samples were subjected to three different welding heat inputs, in order to study the properties of the bead on the plate welds generated. The main objective of the present work has been to study the change of morphology, microstructure and microhardness at the Al-Mg-Mn-Zr-Er laser weld beads. The top width of the bead was larger at the higher laser power. Refinement of grain structure of weld metal was found in laser welding especially at higher power. It was also verified that the mircohardness was raised with the decrease of laser power, due to the microstructure refinement.

关键词： microstructure microhardness aluminum alloy laser welding

作者: D.X.Yang X.Y.Li D.Y.He Z.R.Nie

作者单位: School of Material Science and Engineering, Beijing University of Technology, Beijing, P.R.China

会议类型: 国际会议

会议名称: The 3rd International Conference on Power Beam Processing Technologies(2010 高能束流加工技术国际会议 ICPBPT 2010)

会议地点: 北京

会议语种:英文

页码: 147-150

在线出版日期: 2010-10-25（万方平台首次上网日期，不代表论文的发表时间）