|Numerical simulation and experimental investigation of laser overlap welding of Ti6Al4V and 42CrMo|
|Zhao SS(赵树森); Yu G(虞钢); He XL(何秀丽); Zhang YJ(张永杰); Ning WJ(宁伟建); Yu, G (reprint author), Bldg 2,Room 205,15 Beisihuanxi Rd, Beijing 100190, Peoples R China
|发表期刊||Journal of Materials Processing Technology
|摘要||Finite element method (FEM) and processing experiments were utilized to investigate the thermal phenomena and microstructure of laser overlap welding of Ti6Al4V and 42CrMo. A FEM model of temperature field was established, under considerations of thermal contact resistance and forced convection effect of shielding gas flow. Based on the model, temperature field with various laser power values and scanning velocities was calculated to explore the relationship between the process parameters and the interface temperature. Experiments were conducted on a 1 kW Nd:YAG laser materials processing system with five-axis CNC working station. Microstructure, chemical composition and microhardness of the joint were evaluated. From the numerical simulation and experimental investigation, the calculated temperature history at measuring points had the similar tendency to the experimental results. The interface temperature could just reach or be a little higher than the melting point of the lower sheet material 42CrMo by adjusting the process parameters according to the numerical calculation. At the interface, intermetallic compounds TiFe and TiFe(2) were detected. The thickness of intermetallic reaction layer containing intermetallic compounds was found to depend on the heat input. (C) 2010 Elsevier B.V. All rights reserved.|
|关键词||Laser Overlap Welding
Heat Transfer Model
Commercially Pure Titanium
; Materials Science
|关键词[WOS]||COMMERCIALLY PURE TITANIUM
; DISSIMILAR COUPLE
; Materials Science
; Engineering, Manufacturing
; Materials Science, Multidisciplinary
|项目资助者||The research was sponsored by National Natural Science of China (Grant No.10832011 and 10972222) and CAS Innovation Program.
|通讯作者||Yu, G (reprint author), Bldg 2,Room 205,15 Beisihuanxi Rd, Beijing 100190, Peoples R China|
Zhao SS,Yu G,He XL,et al. Numerical simulation and experimental investigation of laser overlap welding of Ti6Al4V and 42CrMo[J]. Journal of Materials Processing Technology,2011,211(3):530-537.
Zhao SS,Yu G,He XL,Zhang YJ,Ning WJ,&Yu, G .(2011).Numerical simulation and experimental investigation of laser overlap welding of Ti6Al4V and 42CrMo.Journal of Materials Processing Technology,211(3),530-537.
Zhao SS,et al."Numerical simulation and experimental investigation of laser overlap welding of Ti6Al4V and 42CrMo".Journal of Materials Processing Technology 211.3(2011):530-537.