激光熔覆45钢复合材料力学性能实验  

Experimental research on performance of composite material by laser cladding on 45 steel substrate

作　　者：任建华[1] 付学中[2] 付宇明[2] 向龙[2] 郑丽娟[2] 

机构地区：[1]燕山大学建筑工程与力学学院,秦皇岛066004 [2]燕山大学机械工程学院,秦皇岛066004

出　　处：《塑性工程学报》2012年第4期99-102,共4页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51075351;51105325)

摘　　要：对在45钢表面激光熔覆Ni60+20%WC复合粉末制备复合材料室温下的抗拉强度、冲击韧度和显微硬度进行研究。实验表明,45钢表面激光熔覆Ni60+20%WC复合粉末制备的复合材料,室温下的抗拉强度较基材略有下降,但冲击韧度较基材有明显的提升,提高幅度约28%;熔覆层硬度值远大于基体硬度值,从而提高其耐磨性。The tensile strength,impact toughness and microscopic hardness of composite material were studied,which was made on the 45 steel coating with Ni60＋20%WC composite powder via laser cladding at room temperature.The experiments proved that the tensile strength of this composite material was a little lower than its matrix,but the impact toughness was improved obviously by 28%.Meanwhile the hardness of cladding layer was much higher than its matrix,so a distinct improvement in the hardness and resistance to wear of 45 steel was obtained.

关 键 词：激光熔覆 45钢 Ni60/WC 抗拉强度 冲击韧度 显微硬度 

分 类 号：TB333[一般工业技术—材料科学与工程]