期刊论文

Effects of In-situ Tempering on the Laser-cladded Martensitic Stainless Steel Coating

中文

表面技术

1001-3660

2020

49

11

303-308

10.16490/j.cnki.issn.1001-3660.2020.11.035

国家重点研发计划项目（2018YFB1105803）~~；

本校为第一机构

目的提高马氏体不锈钢(MSS)激光熔覆涂层的综合性能。方法利用光纤激光器在Q235钢基材表面,分别采用连续扫描、间断扫描(层间停留30 s)两种方式,制备420 MSS激光熔覆涂层。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、万能材料试验机、维氏显微硬度计、电化学工作站等设备,对比表征了不同扫描方式下制备的涂层试样的显微组织、力学性能和耐蚀性能。结果连续扫描试样的显微组织分布均匀,主要由马氏体(M)和少量残余奥氏体(A_r)组成,呈脆性断裂,其抗拉强度和断后延伸率分别为1368 MPa、3.91%。而间断扫描试样由于产生了原位回火效应,存在两类不同组织:一类是细小灰色组织,比例分数为89.8%,由回火马...

The work aims to improve the comprehensive properties of the laser-cladded martensite stainless steel (MSS) coating.Fiber laser was utilized to prepare 420 MSS coatings on Q235 steel substrate by continuous scanning and idle scanning(the laser was switched off 30 s between layers),respectively.The microstructure,mechanical properties and corrosion resistance of the coating specimens prepared by different laser scanning modes were characterized by equipment such as X-ray diffractometer (XRD),scanning electron microscope (SEM),universal material testing machine,Vickers microhardness tester and e...