基于温变形耦合逆相变细化铁素体制备

doi:10.13251/j.issn.0254-6051.2023.04.006

金属热处理 ›› 2023, Vol. 48 ›› Issue (4): 35-39.DOI: 10.13251/j.issn.0254-6051.2023.04.006

基于温变形耦合逆相变细化铁素体制备

王志豪¹, 李红斌¹, 刘立涛²

1.华北理工大学冶金与能源学院, 河北唐山 063210;
2.河北津西钢铁集团股份有限公司, 河北唐山 064302

收稿日期:2022-10-18 修回日期:2023-01-12 发布日期:2023-05-27
通讯作者: 李红斌,副教授,博士,E-mail:lihongbinxp@126.com
作者简介:王志豪(2001—),男,主要研究方向为金属材料组织演变,E-mail:3140979611@qq.com。
基金资助:
河北省自然科学基金高端钢铁冶金联合基金(E2020209040);华北理工大学生创新项目(X2021325)

Ferrite refinement preparation based on coupling of warm deformation and reversal transformation

Wang Zhihao¹, Li Hongbin¹, Liu Litao²

1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan Hebei 063210, China;
2. Hebei Jinxi Iron & Steel Group Co., Ltd., Tangshan Hebei 064302, China

Received:2022-10-18 Revised:2023-01-12 Published:2023-05-27

摘要/Abstract

摘要： 采用Gleeble-3500热模拟试验机进行650 ℃多道次温变形以研究某中碳钢奥氏体及铁素体晶粒的细化,并利用OM、TEM和EBSD等检测手段进行表征。结果表明,650 ℃下6道次的快速压缩变形(总应变为2.6)后有逆转变发生,所得奥氏体晶粒平均尺寸为3.4 μm;再在10 ℃/s的速率冷却到600 ℃,可以形成平均晶粒尺寸为0.64 μm的铁素体,且渗碳体呈粒状分布于基体之上。

关键词: 中碳钢, 温变形, 形变诱发逆转变, 晶粒细化, 粒状渗碳体

Abstract: Refinements of austenite and ferrite grains in a medium carbon steel were studied by multi-pass warm deformation at 650 ℃ by Gleeble-3500 thermal simulation machine, and characterized by OM, TEM and EBSD. The results show that the 6-passes high strain rate compressive deformation induces austenite reversal transformation, and the mean grain diameter of austenite is 3.4 μm. During cooling down to 600 ℃ at a rate of 10 ℃/s, the ferrite with mean grain diameter of about 0.64 μm is formed from the reversed austenite, and the cementite particles are distributed in the ferrite matrix.

Key words: medium carbon steel, warm deformation, reversal transformation induced by deformation, grain refinement, spheroidized cementite

中图分类号:

TG156.1

王志豪, 李红斌, 刘立涛. 基于温变形耦合逆相变细化铁素体制备[J]. 金属热处理, 2023, 48(4): 35-39.

Wang Zhihao, Li Hongbin, Liu Litao. Ferrite refinement preparation based on coupling of warm deformation and reversal transformation[J]. Heat Treatment of Metals, 2023, 48(4): 35-39.

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基于温变形耦合逆相变细化铁素体制备

Ferrite refinement preparation based on coupling of warm deformation and reversal transformation

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