Analysis on Fiber Laser Welding of MS1470 Steel
MS 1470 steel is mainly used in the automotive industry, which has high strength, light weight and low cost. However, there always appear grains coarsening, brittle increasing, lower intensity and other issues. To solve this problem, we have analyzed the welding process, the fracture morphology and microstructure etc. The results shown that the microstructure were mainly ferrites and lath martensites. However, grains coarsening in the HAZ were serious, and fracture failure also occurred in the heat affected zone. Meanwhile, MS 1470 steel had formed a small amount of pores during rolling process, which also is an important reason for cracks formation.
Laser welding Brittle fracture Martensitic steel
Yajie Li Lijun Xin Zhiyong Wang
Institute of Laser Engineering, Beijing University of Technology
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
487-491
2011-11-18（万方平台首次上网日期，不代表论文的发表时间）