摘要
通过激光熔覆技术,在30CrMnSiNi2A超高强度钢表面熔覆了1Cr15Ni4Mo3粉末,研究了熔覆层的显微组织和力学性能。结果表明,熔覆层组织主要为马氏体和奥氏体的双向组织;熔覆接头经过200℃低温回火处理后,拉伸强度大于1300MPa,延伸率为8.1%,冲击韧性为53.8J·cm-2,恢复到30CrMnSiNi2A超高强度钢母材的强度与延伸率的近90%,且冲击韧性达到母材的两倍。
The 1Cr15Ni4Mo3 alloy powder is cladded on the surface of 30 CrMnSiNi2 A ultra-high strength steel by the laser cladding technique.The microstructure and mechanical properties of the cladding layers are investigated.The results show that,the microstructure is mainly the martensite and austenite double-phase structure.For the cladding joints,after the low-temperature tempering at 200 ℃,the tensile strength is larger than 1300 MPa,the extension rate is 8.1%,and the impact toughness is 53.8 Jcm^-2.The tensile strength and extension rate reach to90% of those of 30CrMnSiNi2 Aultra-high strength base steel,while the impact toughness is doubled if compared with that of base material.
作者
周可欣
秦仁耀
曹强
张志强
张学军
孙涛
淮军峰
Zhou Kexin;Qing Renyao;Cao Qiang;Zhang Zhiqiang;Zhang Xuejun;Sun Tao;Huai Junfeng(State-owned Machinery Factory of Wuhu,Wuhu,Anhui 241007,China;AECC Beijing Institute of Aeronautical Materials,Beijing,100095,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第7期324-329,共6页
Laser & Optoelectronics Progress
