支架立柱用27SiMn钢表面激光熔覆FeCrMoSi合金层组织分析  

Microstructure Analysis of FeCrMoSi Alloy Layer on 27SiMn Steel Surface by Laser Cladding

作　　者：田萌[1] TIAN Meng(Henan Industry and Trade Vocational College,Department of Mechanical and Electrical Engineering,Zhengzhou451191,China)

机构地区：[1]河南工业贸易职业学院机电工程系,河南郑州451191

出　　处：《甘肃冶金》2023年第5期97-99,共3页Gansu Metallurgy

基　　金：河南省高等学校重点科研项目(项目编号:22A470005)。

摘　　要：为了提高液压支架立柱母材用27SiMn钢表面熔覆层的综合性能,对其元素组成做了适当优化,制得了单层厚度2 mm以上的熔覆层,并测其微观组织。结果表明:熔覆层内的组成成分属于单一α-Fe,各部位厚度呈现均匀分布状态,熔覆层和基体间形成了良好结合层,顶部区域组织主要呈现细小等轴晶的状态;中部区域形成了树枝晶形态组织;底部区域得到了尺寸接近12μm的胞状晶。In order to improve the comprehensive properties of the 27SiMn steel surface cladding layer for the base material of hydraulic support column,the element composition of the cladding layer was properly optimized,and a single layer with thickness of more than 2 mm was prepared,and its microstructure was measured.The results show that the composition of the cladding layer belongs to a singleα-Fe,the thickness of each part is evenly distributed,a good bonding layer is formed between the cladding layer and the matrix,and the microstructure of the top region is mainly fine equiaxed.Dendritic morphology was formed in the middle region.In the bottom region,the size of the cell crystals is close to 12μm.

关 键 词：27SIMN钢 激光熔覆 微观组织 结合层 等轴晶 

分 类 号：TG174.4[金属学及工艺—金属表面处理]