高级检索
赵琳, 田志凌, 彭云, 赵晓兵, 齐彦昌. 1Cr22Mn16N高氮钢激光焊接II.焊缝组织与性能[J]. 焊接学报, 2007, (9): 80-82,86.
引用本文: 赵琳, 田志凌, 彭云, 赵晓兵, 齐彦昌. 1Cr22Mn16N高氮钢激光焊接II.焊缝组织与性能[J]. 焊接学报, 2007, (9): 80-82,86.
ZHAO Lin, TIAN Zhiling, PENG Yun, ZHAO Xiaobing, QI Yanchang. Laser welding of high nitrogen steel 1Cr22Mn16N-Ⅱ.microstructure and mechanical properties of weld metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (9): 80-82,86.
Citation: ZHAO Lin, TIAN Zhiling, PENG Yun, ZHAO Xiaobing, QI Yanchang. Laser welding of high nitrogen steel 1Cr22Mn16N-Ⅱ.microstructure and mechanical properties of weld metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (9): 80-82,86.

1Cr22Mn16N高氮钢激光焊接II.焊缝组织与性能

Laser welding of high nitrogen steel 1Cr22Mn16N-Ⅱ.microstructure and mechanical properties of weld metal

  • 摘要: 为了研究高氮钢激光焊接接头焊缝区组织、性能特性,利用CO2激光对1Cr22Mn16N高氮钢进行了焊接,研究了焊接热输入和保护气体组成对焊缝组织、性能的影响。结果表明,高氮钢激光焊接焊缝组织均为奥氏体和少量的δ铁素体。当焊接热输入增大时,δ铁素体的尺寸显著增大。高氮钢激光焊接接头均没有出现软化区。随着热输入的减小,焊缝区的平均硬度升高;随着保护气体中氮气比例增大,焊缝区的硬度增加。当热输入减小时,焊缝韧性上升,而保护气体的组成对焊缝冲击吸收功的影响不大。

     

    Abstract: In order to study the microstructure and mechanical properties of the weld metal of high nitrogen steel 1Cr22Mn16N, the steel was welded by CO2 laser welding, and the influence of the shielding gas composition and heat input on the microstructure and mechanical properties of the weld metal was investigated. The experimental results indicate that the microstructure in the weld metal is austenite and δ-ferrite.The size of δ-ferrite is increased with the increase of heat input.The results also show that no soft zone occurs in the weld metal.The hardness of weld metal is increased as the heat input is decreased, and it is improved as N2 in the shielding gas is increased.The toughness increases when the heat input decreases, whereas the compositions of shielding gas probably have no influence on the change of toughness of the weld metal.

     

/

返回文章
返回