Effect of Self-shielded Flux Cored Wire Surfacing and In-situ Synthesis TiB2-TiC Particles on Microstructure and Properties of Surfacing Alloy
LIU Zheng-jun1, JIA Hua1,2, LI Meng2
1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;
2. Applied Technology College of Dalian Ocean University, Dalian 116300, Liaoning, China
Abstract：The self-shielded flux cored wire was used to test the surface of Q235 steel, and the Fe-Cr-C-B-Ti alloy was prepared by adjusting the content of Ti in the flux cored wire.The change rule of mechanical properties of surfacing alloy was obtained through hardness and wear test. The phase composition and microstructure of the alloy were investigated by X ray diffraction (XRD) and scanning electron microscopy (SEM).The results indicate that with the increase of Ti content, TiC and TiB2 hard phase particles are formed in the surfacing layer, and TiC is preceded by TiB2 production.A large number of dispersed TiC and TiB2 can play an important role in the wear process and wear resistance of the deposited metal. The hardness of the surfacing layer is increased from 56.5HRC to 66HRC, and the wear loss weight is decreased from 0.5772g to 0.0487g when the mass fraction of Ti in the surfacing alloy is increased from 0.15% to 1.43%.
刘政军, 贾华, 李萌. 自保护药芯焊丝堆焊原位合成TiB2-TiC颗粒对堆焊合金组织性能的影响[J]. 材料工程, 2018, 46(7): 106-112.
LIU Zheng-jun, JIA Hua, LI Meng. Effect of Self-shielded Flux Cored Wire Surfacing and In-situ Synthesis TiB2-TiC Particles on Microstructure and Properties of Surfacing Alloy. Journal of Materials Engineering, 2018, 46(7): 106-112.
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2018, Vol. 46 
