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Effect of beam offset on the microstructure and mechanical properties of 201SS-Q235 self-fusion LBW joint

文献类型： 外文期刊

作者： Jiang, Xizhi 1 ; Du, Chengchao 2 ; Ni, Mansheng 3 ; Liu, Junjian 3 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China

3.Da Tang East China Elect Power Test & Res Inst, Hefei 230000, Anhui, Peoples R China

4.Minist Agr, Key Lab Protected Agr Engn Middle & Lower Res Yan, Nanjing 210014, Jiangsu, Peoples R China

关键词： Stainless steel; Dissimilar joint; Laser beam welding; Martensitic transformation; Residual stress

期刊名称：JOURNAL OF MANUFACTURING PROCESSES （ 影响因子：5.01； 五年影响因子：5.135 ）

ISSN： 1526-6125

年卷期： 2019 年 47 卷

页码：

收录情况： SCI

摘要： The 201SS and Q235 plates were joined using self-fusion LBW joint with different beam offset. The results showed that more 201SS in the FZ when the beam was shifted from Q235 side to 201SS side contributed to the more RA and delta-Fe phase. The twinned martensite was observed in the FZ containing 201SS with a volume fraction of 60.5% (the FZ was called "FZ-3 ''). The tensile test of joint showed that the fracture occurred in the Q235 BM. The tensile test and impact test of sub-sized samples showed that more 201SS in the FZ declined the strength, plasticity, and toughness. The remarkable compressive stress was observed in WD as the volume increase from the MT of FZs during the cooling stage. The volume increase of FZ declined gradually as the increase of 201SS in it. The smallest volume increase of FZ-3 contributed to its lowest compressive stress in WD.

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