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FANG Kun, SONG Kuijing, Liang Ning, YANG Jianguo, FANG Hongyuan. Effect of welding segregation on microstructure and mechanical properties of regenerated weld for nanostructured bainite steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 71-74.
Citation: FANG Kun, SONG Kuijing, Liang Ning, YANG Jianguo, FANG Hongyuan. Effect of welding segregation on microstructure and mechanical properties of regenerated weld for nanostructured bainite steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(3): 71-74.
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Effect of welding segregation on microstructure and mechanical properties of regenerated weld for nanostructured bainite steel

  • 1.

    The No. 38 Institute, China Electronic Technology Corporation, Hefei 230088, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

  • 2.

    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

  • 3.

    The No. 38 Institute, China Electronic Technology Corporation, Hefei 230088, China

  • 4.

    Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou 310032, China

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  • Received Date: July 01, 2014
    Graphical Abstract
    • Abstract
  • Effect of welding segregation on retained austenitein regenerated weld for nanostructured bainite steel has been investigated by SEM, TEM and EBSD. Welding segregation resulted incoarse retained austenite that distributed at the boundary of the dendrite in the weld. The carbon content of coarse retained austenite is lower than that of the blocky-shape austenite, which reduces stability of the structure. The retained austenite in base metal is in submicronmeter size with a uniform distribution. By contrary, the size of retained austenite in the weld is in micronmeter, and the distribution is not uniform. As a result, the change of the retained austenite in the weld has important effect on the elongation rate of the weld.
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    • References (6)
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    方坤, 宋奎晶, 杨建国, 等. 纳米贝氏体钢TIG焊接头组织和性能[J]. 焊接学报, 2013, 34(8):13-16. Fang Kun, Song Kuijing, Yang Jianguo, et al. Microstructure and properties of nanobainite steel joint by TIG[J]. Transactions of the China Welding Institution, 2013, 34(8):13-16.
    方坤, 黄楠, 杨建国, 等. 纳米贝氏体钢再纳米化焊接接头组织和性能[J]. 焊接学报, 2014, 35(1):105-108. Fang Kun, Huang Nan, Yang Jianguo, et al. Microstructure and mechanical properties of welded joint with regeneration for nanostructured bainite steel[J]. Transactions of the China Welding Institution, 2014, 35(1):105-108.
    王清宝, 栗卓新, 史耀武. 夹送辊堆焊裂纹及其产生机理[J]. 焊接学报, 2010, 31(3):93-96. Wang Qingbao, Li Zhuoxin, Shi Yaowu. Mechanism of cracks generation in hard facing pinch roll[J]. Transactions of the China Welding Institution, 2010, 31(3):93-96.
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