Influence of Different Pre-edge Surfacing Transition Layers on the Structure and Properties of 12Cr2Mo1R/S30408 Joint

doi:10.11896/cldb.21050178

	Influence of Different Pre-edge Surfacing Transition Layers on the Structure and Properties of 12Cr2Mo1R/S30408 Joint
	Liu, Guangyin 1; Huang, Jiankang 1; Yu, Xiaoquan 1; Zhang, Jianxiao 2; Fan, Ding 1
刊名	Cailiao Daobao/Materials Reports
	2022-06-25
卷号	36 期号:12
关键词	Austenite Carbides Chromium alloys Chromium steel Gas welding Grain boundaries Metal analysis Metals Probes Scanning electron microscopy Submerged arc welding Tensile strength Tensile testing Base metals Carbide phasis Dissimilar steel welding Electro-probe Heat-resistant steel Micro analysis Submerged arc welding Submerged-arc welding Transition layers Welds joint
ISSN号	1005-023X
DOI	10.11896/cldb.21050178
英文摘要	Aiming at the welding problem of thick plates for low-alloy heat-resistant steel and S30408 austenitic stainless steel, this work proposed a high efficiency and quality welding process, which adopted different transitions layer of E309L, ENiCrFe-3, ENiCrMo-3 with the thickness of 2-3 mm on the side of the heat-resistant steel, then used AA-TIG welding method to weld back side, and used finally submerged arc welding for filling. Metallographic microscope and scanning electron microscope were used to observe interfacial microstructure, and electro probe micro-analysis was performed to analysis alloy elements distribution at the interface. Microhardness and tensile tests were used to test the mechanical properties of the weld joint. The results show that there is a great concentration gradient of Cr, Ni and Fe elements at the interface of 12Cr2Mo1R base metal/transition layer. The ferrite content in the weld of the E309L transition layer is more than ENiCrMo-3 and ENiCrFe-3. The electro probe micro analysis (EPMA) results show that C atom is enriched at the grain boundaries, and the M23C6 carbide-phases is formed in ENiCrMo-3 transition layer. The hardness of interface between base metals and the E309L, ENiCrFe-3 and ENiCrMo-3 transition layer, increases sequentially and gradually decreases toward the center. The tensile strengths of the weld joints of E309L, ENiCrFe-3 and ENiCrMo-3 are 608.1 MPa, 596.2 MPa, 564.5 MPa and the elongation are 21.7%, 21.2%, 18.2%, respectively. All fracture surfaces show the dimple-like morphology. © 2022, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159065]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Lanzhou Lanshi Heavy Equipment Co., Ltd., Lanzhou; 730314, China
推荐引用方式 GB/T 7714	Liu, Guangyin,Huang, Jiankang,Yu, Xiaoquan,et al. Influence of Different Pre-edge Surfacing Transition Layers on the Structure and Properties of 12Cr2Mo1R/S30408 Joint[J]. Cailiao Daobao/Materials Reports,2022,36(12).
APA	Liu, Guangyin,Huang, Jiankang,Yu, Xiaoquan,Zhang, Jianxiao,&Fan, Ding.(2022).Influence of Different Pre-edge Surfacing Transition Layers on the Structure and Properties of 12Cr2Mo1R/S30408 Joint.Cailiao Daobao/Materials Reports,36(12).
MLA	Liu, Guangyin,et al."Influence of Different Pre-edge Surfacing Transition Layers on the Structure and Properties of 12Cr2Mo1R/S30408 Joint".Cailiao Daobao/Materials Reports 36.12(2022).