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 ›› 2021, Vol. 42 ›› Issue (3): 12-15.

• 试验研究 • 上一篇    下一篇

形变量和冷却速度对SCM435冷镦钢形变诱导铁素体相变的影响

陈继林1,2,3, 冯光宏1, 杨栋2, 薛正国2, 马洪磊2, 张宏亮1, 王宝山1, 马健1   

  1. 1. 钢铁研究总院冶金工艺研究所
    2. 邢台钢铁有限责任公司
    3. 河北省线材工程技术研究中心
  • 收稿日期:2020-04-26 出版日期:2021-05-15 发布日期:2022-11-11
  • 作者简介:陈继林(1986.),男,博士生,高级工程师,河北科技大学(本科)毕业,特钢线材研发和质量管理。

Effect of Deformation and Cooling Rate on Deformation-Induced Ferrite Transformation in SCM435 Cold Heading Steel

Chen Jilin1,2,3 ,Feng Guanghong1, Yang Dong2, Xue Zhengguo2 ,Ma Honglei2 , Zhang Hongliang1, Wang Baoshan1, Ma Jian1   

  1. 1 Metallurgical Technology Institute, Central Iron and Steel Research Institute, Beijing 100081 ;
    2 Xingtai Iron and Steel Co Ltd, Xingtai 054027 ;
    3 Hebei Engineering Research Center for Wire Rod, Xingtai 054027
  • Received:2020-04-26 Published:2021-05-15 Online:2022-11-11

摘要: 通过热模拟试验研究了两相区轧制,研究了形变量(15%~40%)和冷却速度0.8 ℃/s和1.2 ℃/s对SCM435冷镦钢的形变诱导铁素体相变的影响。结果表明:SCM435钢在奥氏体和铁素体两相区(750~850 ℃)轧制,在0.8 ℃/s的冷速下,随形变量增加,形变诱导铁素体体积分数呈升高趋势,并存在粒状珠光体组织,硬度呈先降低再升高的趋势;在1.2 ℃/s的冷速下,随形变量增加,形变诱导铁素体体积分数呈降低趋势,并出现了粒状贝氏体组织,硬度呈升高趋势。

关键词: 形变量, SCM435钢, 形变诱导铁素体相变, 硬度, 冷却速度;

Abstract: The effect of rolling with 15% ~ 40% and cooling rate 0. 8 °C/s and 1.2 °C/s in dual phase rigon on deformation-induced ferrite transformation in SCM435 cold-headed steel is studied by thermal simulation test. The results show that rolling of SCM435 steel in the austenite and ferrite two-phase zone (750 ~ 850 °C),at a cooling rate of 0.8 °C/s, with amount of deformation increasing, the deformation-induced ferrite volume fraction increases, and there is a granular pearlite structure, and the hardness first decreases and then increases at a cooling rate of 1.2 °C/s, with amount of deformation increasing ,the deformation-induced ferrite volume fraction decreases, and a granular bainite structure appears, and the hardness increases.