低碳钢先共析铁素体和形变诱导铁素体的相变机制、组织和性能

特殊钢 ›› 2008, Vol. 29 ›› Issue (4): 8-10.

低碳钢先共析铁素体和形变诱导铁素体的相变机制、组织和性能

王倩^1,2, 杨忠民², 吴庆辉^1,2, 吴春京¹

1北京科技大学材料科学与工程学院，北京100083 ；
2钢铁研究总院结构材料研究所，北京100081

收稿日期:2007-12-11 出版日期:2008-08-01 发布日期:2022-12-23
作者简介:王倩(1979-),女,工程师,2001年辽宁工业大学毕业，形变诱导铁素体相变热力学机制的研究。

Phase Transformation Mechanism, Structure and Property of Pro-eutectoid Ferrite and Deformation Induced Ferrite of Low Carbon Steel

Wang Qian^1,2, Yang Zhongmin², Wu Qinghui^1,2, Wu Chunjing¹

1 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083；
2 Institute for Structure Materials, Central Iron and Steel Research Institute, Beijing 100081

Received:2007-12-11 Published:2008-08-01 Online:2022-12-23

摘要/Abstract

摘要： 通过Gleeble 1500热模拟机对Q235钢加热至950℃ 5 min;1℃/s冷至855℃ 30 s,以应变速率15 s^-1,进行80%压缩,淬火,获得形变诱导铁素体组织,并用950℃ 5 min,炉冷获得先共析铁素体组织。试验结果表明,形变诱导铁素体晶粒尺寸≤5μm,平均HV229.55,抗拉强度809 MPa;先共析铁素体晶粒尺寸10～20μm,晶粒不均匀,平均HV210.28,抗拉强度736 MPa。文中分析了形变诱导铁素体和先共析铁素体相变热力学和动力学机制。

Abstract: The deformation induced ferrite structure of Q235 steel was got with heating at 950 °C for 5 min,1°C/s cooling to 855 ℃ for 30 s and reduced 80% at strain rate 15 s^-1, then quenching by Gleeble 1500 thermal simulation machine, and the pro-eutectoid ferrite structure of the steel was got by heating at 950 °C for 5 min, furnace cooling. Test results showed that the grain size of deformation induced ferrite was ≤5um average HV value 229. 55, tensile strength 809 MPa, while the grain size of pro-eutectoid ferrite was 10 - 20 μm grain un-uniform, average HV value 210. 28, tensile strength 736 MPa. The mechanism of thermodynamics and kinetics of the deformation induced ferrite and pro-eutectoid ferrite are analyzed in this paper.

王倩, 杨忠民, 吴庆辉, 吴春京. 低碳钢先共析铁素体和形变诱导铁素体的相变机制、组织和性能[J]. 特殊钢, 2008, 29(4): 8-10.

Wang Qian, Yang Zhongmin, Wu Qinghui, Wu Chunjing. Phase Transformation Mechanism, Structure and Property of Pro-eutectoid Ferrite and Deformation Induced Ferrite of Low Carbon Steel[J]. Special Steel, 2008, 29(4): 8-10.

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