Numerical Study on Laser Cladding Process of Magnesium Alloys

摘要：

In this paper, a three-dimensional simulation model for laser-cladding processes of magnesium alloys is proposed. The applied loading is a moving heat source that depends on process parameters such as power density, laser beam diameter and scanning speed. The effects of process parameters on the melt pool are quantitatively discussed by numerical analysis. In these parameters, Marangoni force is the most important in affecting the molten metal flow and the contour of the melt pool. Both the length and depth of the melt pool vary sharply with temperature dependence of surface tension dσ/dT when the absolute value of this temperature dependence is at lower value.

关键词： Laser cladding process Marangoni force Surface tension Melt pool

作者: Qingming Chang Changjun Chen Xia Chen Siqian Bao

作者单位: Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,China

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 224-229

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）