ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2009, Vol. 30 ›› Issue (5): 68-70.

• 组织和性能 • 上一篇    

低碳超高强度Q & P钢板的热处理工艺和组织性能

董 辰,江海涛 ,陈雨来,唐  获 ,程知松   

  1. 北京科技大学高效轧制国家工程研究中心,北京 100083
  • 收稿日期:2009-04-16 出版日期:2009-10-01 发布日期:2022-11-17
  • 通讯作者: 陈雨来
  • 作者简介:董辰(1983-),男,硕土研究生,高强度汽车板Q&P钢的开发和研究。

Heat Treatment Process and Structure of a Low Carbon Super-high Strength Quenching and Partitioning Steel Plate

Dong  Chen , Jiang  Haitao , Chen  Yulai , Tang  Di  ,  Cheng  Zhisong   

  1. National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology,Beijing 100083
  • Received:2009-04-16 Published:2009-10-01 Online:2022-11-17
  • Contact: Chen Yulai

摘要: 试验的Q & P(淬火和配分)钢(%:0.17C、1.40Si、1.48Mn、0.25Al)由7.5 kg真空感应炉冶炼,轧成1.0~1.5 mm钢板,采用井式盐浴炉模拟了试验Q & P钢的热处理工艺,经910℃奥氏体化,淬至200~245℃,20 s,升温至配分温度300~450℃,60~600 s,快冷。结果表明,采用淬火245℃ 20 s,配分300~350℃≥300 s可保证碳原子由马氏体向残留奥氏体富集,试验钢具有高的强塑积(25000~30000 MPa%)。

关键词: Q &, P钢, 热处理, 组织, 强度和塑性

Abstract: Test Q & P(quenching and partitioning)steel(%:0. 17C,1.40Si,1.48Mn,0.25Al)was melted a 7.5 kg vacuum induction furnace then rolled to 1.0~1.5 mm plate.The heat treatment process of the test Q & P steel plate was simulated by a shaft salt bath furnace with austenizing at 910 ℃,quenching to 200~245 ℃ for 20 s,heating to parti-tioning temperature 300~450℃ for 60~600 s,then quick cooling.Results show that with quenching to 245℃ for 20 s, partitioning at 300~350℃ for ≥300 s,it is available to assure the carbon atom accumulating to residual austenite from martensite and get high product of strength-elongation(25000~30000 MPa%).

Key words: Q &, P Steel, Heat Treatment, Structure, Strength and Elongation