HTM ›› 2020, Vol. 45 ›› Issue (3): 64-67.DOI: 10.13251/j.issn.0254-6051.2020.03.013

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Strengthening effect of nitrogen on tin-plated steel sheet

Sun Chaofan1,2, Fang Yuan1,2, Wang Yaqing1,2, Wu Zhiguo1,2, Pan Hongwei1,2   

  1. 1. Shougang Research Institute of Technology, Beijing 100043, China;
    2. Laboratory of Green Recyclable Process for Iron and Steel Production Technology, Beijing 100043, China
  • Received:2019-09-06 Online:2020-03-25 Published:2020-04-03

Abstract:

Content of nitrogen in solid solution and combined nitrogen in three different kinds of tin-plated sheet were studied by physiochemical phase analysis, the contribution of solution strengthening and precipitation strengthening played by nitrogen in the tin-plated sheet were also calculated according to related theory. The results show that with the total nitrogen content increasing from 0.0021% to 0.0103%, the proportion of combined nitrogen in the steel is decreased by 10.1%, but the proportion of the nitrogen in the AlN precipitation is increased by 10.7%. Nitrogen can play an important role in improving the strength of the tin-plated sheet, the yield strength of the steel can be promoted by 30 MPa with the total nitrogen content increased by 0.0082%.

Key words: tin-plated sheet, nitrogen, strengthening, solid solution, precipitation

CLC Number: