Microstructure and mechanical properties of flash butt welding high carbon martensitic stainless steel M390 and austenitic stainless steel 304

doi:10.12073/j.hjxb.20210616005

	Microstructure and mechanical properties of flash butt welding high carbon martensitic stainless steel M390 and austenitic stainless steel 304
	Cao, Rui 1; Qiao, Lixue 1; Che, Hongyan 2,3; Li, Shang 4; Wang, Tiejun 2,3; Dong, Hao 2,3
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2022-02-25
卷号	43 期号:2 页码:27-33
关键词	Austenitic stainless steel Butt welding Carbides Chromium compounds Energy dispersive spectroscopy Heat affected zone Martensitic stainless steel Metals Morphology Scanning electron microscopy Tensile strength 304 austenitic stainless steels Flash butt welding Heat-affected zones High carbons M390 high carbon martensitic stainless steel Microhardness tests Microstructures and mechanical properties Stainless steel-304 Weld metal X- ray diffractions
ISSN号	0253-360X
DOI	10.12073/j.hjxb.20210616005
英文摘要	The weldability of M390 high carbon martensitic stainless steel and 304 austenitic stainless steel has been investigated by flash butt welding method. Firstly, the mechanical properties of the welded joint utilize the room temperature tensile experiment, the microhardness test is characterized. At the same time, scanning electron microscope(SEM), Energy Dispersive Spectroscopy(EDS) and X-ray diffraction(XRD) were used to analyze the microstructure morphology, element diffusion and phase composition of each region of the welded joint. The experimental results show that by appropriate welding parameters, M390 and 304 can form a macroscopically beautiful weld, the maximum tensile strength is 480.62 MPa, and the elongation is 6.2%. The weld metal is composed of martensite, austenite, M23C6 and M7C3. The type of carbide on M390 side and in weld metal is (Cr, V) carbide. Different positions of M390 heat-affected zone are affected by different heat input, resulting in different aggregation and growth of carbides in different positions of M390 heat-affected zone. The carbides in the coarse-grained heat-affected zone of M390 aggregate and grow, and new carbides are continuously precipitated, the carbides exist in two types of morphologies: elongated and granular. The carbides in the fine-grained region are small in size and granular in morphology. The welded joint is brittle fracture, and the fracture position is in the weld metal, which is related to the weld metal structure and the diffusion of elements in the welded joint. Copyright © 2022 Transactions of the China Welding Institution. All rights reserved.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157859]
专题	材料科学与工程学院
作者单位	1.The State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Advanced Technology & Materials Co., Ltd., China Iron & Steel Research Institute Group, Beijing; 100081, China; 3.Engineering and Technology Research Center of Hot Isostatic Pressing, Zhuozhou; 072750, China; 4.Bahuan Technology Group Co., Ltd., Taizhou; 318054, China
推荐引用方式 GB/T 7714	Cao, Rui,Qiao, Lixue,Che, Hongyan,et al. Microstructure and mechanical properties of flash butt welding high carbon martensitic stainless steel M390 and austenitic stainless steel 304[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2022,43(2):27-33.
APA	Cao, Rui,Qiao, Lixue,Che, Hongyan,Li, Shang,Wang, Tiejun,&Dong, Hao.(2022).Microstructure and mechanical properties of flash butt welding high carbon martensitic stainless steel M390 and austenitic stainless steel 304.Hanjie Xuebao/Transactions of the China Welding Institution,43(2),27-33.
MLA	Cao, Rui,et al."Microstructure and mechanical properties of flash butt welding high carbon martensitic stainless steel M390 and austenitic stainless steel 304".Hanjie Xuebao/Transactions of the China Welding Institution 43.2(2022):27-33.