摘要
采用等离子熔覆技术在Q235钢基体上制备了fcc结构的CoCrCuFeNiMn高熵合金熔覆层,并研究了熔覆层的组织结构以及800℃、1200℃退火对熔覆层显微组织和硬度的影响。结果发现,熔覆层显微组织为树枝晶,枝晶间为富Cu面心立方固溶体,有纳米编织组织析出,枝晶内为多种元素固溶的面心立方固溶体。熔覆层经过800℃和1200℃退火4h后,没有新相析出,元素偏聚现象未发生明显变化,晶粒发生明显的粗化。
CoCrCuFeNiMn high entropy alloys cladding layer of the face-centered cubic structure was performed on Q235 steel by plasma cladding technology. The microstructure of cladding layer and the effect of annealing treatment at 800℃,1200℃ were investigated.The results show that the microstructure of cladding layer is dendrite structure. Interdendrite is Cu enriched face-centered cubic solid solution. The nano knitting structure was deposited in the interdendrite. The face-centered cubic solid solution with a variety of elements is formed in dendrite. Phase structure of alloy is relatively stable after annealing treatment at 800℃,1200℃ for 4h and no new phase is precipitated. Grain size grew up apparently.
出处
《北华航天工业学院学报》
CAS
2015年第4期18-21,共4页
Journal of North China Institute of Aerospace Engineering
基金
北华航天工业学院青年基金项目(KY-20140-10)
