期刊论文

Effect of Process Parameters on Surface Hardness Fluctuation of M2 High-speed Steel Clad Layer by Laser Melting on Cr12MoV Surface

中文

机电工程技术

1009-9492

2023

52

04

150-154

南华大学2022年研究生科研创新项目(编号：223YXC008)

本校为第一机构

为增强轧辊表面硬度以提升轧辊工作寿命，采用1 kW光纤激光器在Cr12MoV表面制备M2高速钢熔覆层，探索最优激光工艺参数。通过着色探伤剂、X射线衍射仪及显微硬度仪，对不同激光功率和扫描速度下的熔覆层显微组织、成分、物相、硬度进行检测分析。结果表明：激光功率对熔覆层表面成形质量影响较大，扫描速度对其影响不明显；随激光功率增加，熔覆层表面平整度增强，裂纹数量降低，熔覆层组织成分分布越均匀，晶界偏析现象减弱，枝晶组织逐渐粗大，熔覆层显微硬度降低；熔覆层主要由Martensite、Austensite、Fe-Cr、MC、M2C相组成，熔覆层内的组织主要是树枝晶和胞状晶，MC、M2C等硬质相弥散分布在...

In order to enhance the surface hardness of rolls to improve the working life of rolls,the M2 HSS fusion cladding layer on the surface of Cr12MoV was prepared by using a 1 kW fiber laser to explore the optimal laser process parameters.The microstructure,composition,phys...MORE In order to enhance the surface hardness of rolls to improve the working life of rolls,the M2 HSS fusion cladding layer on the surface of Cr12MoV was prepared by using a 1 kW fiber laser to explore the optimal laser process parameters.The microstructure,composition,physical phase and hardness of the molten layer at diffe...