Study on the Microstructure in Weld Metal of Cr-Ni Stainless Steel Under Different Welding Technology
According to Cr-Ni stainless steel,three different welding technology and the appropriate welding process parameters were selected.Three welded joints of Cr-Ni stainless steel were prepared.The microstructure in weld metal zone of Cr-Ni stainless steel under different welding methods was studied by X-fluorescent chemical composition analysis and microstructure analysis.The results show that alloy composition of the weld metal are different and distribute unequally under different welding methods,microstructure morphology and grain size of the weld layer are quite different.the structure of bottom is small amount of γ phase and a little δ phase are combined together and cover is γ phase and Cu-wealthy phases in the welds under TIG-MAG welding.the structure of bottom is coarse columnar crystal and cover is typical cellular dendrite in the welds under TIG-TIG welding.the structure of bottom is tiny equiaxial dendrites and columnar crystal and cover is some γ phase and a little δ phase are combined together in the welds under TIG-SMAW welding.
Cr-Ni stainless steel weld metal welding technology
Hongbo Li Haitao Li Muqin Li Xingjun Su Chunjie Li
Department of Materials Science and Engineering, Jiamusi University, Jiamusi,154007, China Zibo Thermal Recovery Equipment Branch, Shengli Oilfield Freet Petroleum Equipment Co., Ltd.,Zibo, 2 Department of Public Computer, Jiamusi University, Jiamusi,154007, China
国际会议
西安
英文
66-69
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）