吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (02): 377-0381.

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Structure of spring steel spot welded joint and prediction for joint hardness

XU Guo-cheng1, XU De-sheng1,ZHAO Xi-hua1,BAI Da-cheng2,CHEN Jian-he2   

  1. 1.College of Materials Science and Engineering, Jilin University, Changchun 130022,China;2.Changchun Sanyou Automobile Parts Manufacturing Co.,Ltd., Changchun 130031,China
  • Received:2009-08-25 Online:2011-03-01 Published:2011-03-01

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Abstract:

Based on the continuous cooling transformation curve of spring steel, a numerical model for structure of spring steel spot welded joint in continuous cooling transformation process was built. Considering the characteristics of spot weld temperature field, a numerical model of random tempering structure transformation was built based on parameter λ, and the prediction for hardness distribution of spot welded joint was realized. The prediction data agreed well with the measured results.

Key words: materials synthesis and processing technology, spring steel, resistance spot welding, hardness, numerical prediction

CLC Number: 

  • TG44
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