Effect of V content on microstructures and properties of TiC cermet fusion welding interface  

作　　者：魏炜 徐莹 王旭 黄智泉 刘胜新 Wei Wei;Xu Ying;Wang Xu;Huang Zhiquan;Liu Shengxin(Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China;Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China [2]Zhengzhou University,Zhengzhou 450001,China

出　　处：《China Welding》2024年第1期40-45,共6页中国焊接（英文版）

基　　金：supported by Henan Province Key Research and Development and Promotion Project(Grant No.201ZP20220010).

摘　　要：The effects of vanadium(V)on the microstructures and mechanical properties of the TiC cermet fusion welding interface were studied by adjusting the content of V in the self-developed flux-cored wires using metal inert gas arc(MIG)welding for surfacing on the TiC cermet.The results show that the increase in V content promotes the element diffusion between TiC cermet and weld metal.There are no de-fects observed in the interface,and the diffusion of elements refers to excellent metallurgical bonding.The shear strength of the fusion zone initially decreases and then increases with the increase in V content.The maximum shear strength of the TiC cermet/weld interface,reaching 552 MPa,occurred when the V content reached 0.65%.Meanwhile,the average hardness in the transition zone reached 488.2 HV0.2.

关 键 词：TiC cermet MIG welding INTERFACE V content shear strength 

分 类 号：TG442[金属学及工艺—焊接]