70Si2MnV钢球淬火过程的有限元模拟

doi:10.13251/j.issn.0254-6051.2021.04.017

金属热处理 ›› 2021, Vol. 46 ›› Issue (4): 100-104.DOI: 10.13251/j.issn.0254-6051.2021.04.017

70Si2MnV钢球淬火过程的有限元模拟

王晓林¹, 乔娟娟², 李强¹, 郭辉^1,3

1.潍坊科技学院轻质材料先进制备及成型重点实验室, 山东潍坊 262700;
2.山东科技大学机械工程学院, 山东青岛 266590;
3.山东大学机械工程学院, 山东济南 250100

收稿日期:2020-10-05 出版日期:2021-04-25 发布日期:2021-05-08
通讯作者: 郭辉(1989—),男,博士,讲师,E-mail:guohuiyw@126.com
作者简介:王晓林(1975—),男,硕士,主要研究方向为金属材料加工,E-mail:wxlday@126.com。
基金资助:
潍坊市科技发展计划(2019GX077)

Finite element simulation of 70Si2MnV steel ball during quenching process

Wang Xiaolin¹, Qiao Juanjuan², Li Qiang¹, Guo Hui^1,3

1. Key Lab of Advanced Light Materials Manufacturing and Forming, Weifang University of Science and Technology, Weifang Shandong 262700, China;
2. School of Mechanical Engineering, Shandong University of Science and Technology University, Qingdao Shandong 266590, China;
3. School of Mechanical Engineering, Shandong University, Jinan Shandong 250100, China

Received:2020-10-05 Online:2021-04-25 Published:2021-05-08

摘要/Abstract

摘要： 基于传热学和相变学原理,借助ANSYS热模拟软件建立70Si2MnV轧制钢球在淬火过程中的传热过程有限元数学模型,获得钢球内部温度场随时间的变化情况,结合CCT曲线预测淬火过程的相变过程,并通过显微组织及硬度表征对模拟结果进行验证。结果表明,淬火钢球表面及距表面20 mm处冷却速度较快,能够获得全马氏体组织;距离表面40 mm处冷却速度下降,淬火过程中产生少量贝氏体组织;心部冷却速度小于临界冷速,存在珠光体及贝氏体组织,但马氏体含量仍保持在80%左右,表明试验钢具有良好的淬透性,能保证直径ø120 mm的钢球完全淬透。

关键词: 70Si2MnV钢, 淬火, 有限元模拟, CCT曲线

Abstract: Based on the heat transfer and phase transformation principles, the ANSYS thermal simulation software was used to establish the finite element mathematical model of the rolled 70Si2MnV steel ball during quenching and heat transfer process, and to obtain the change of temperature field in the steel ball with time. Meanwhile, the phase transformation during quenching process was predicted combiring uith CCT curves, and the microstructure and hardness characterizations were conducted to verify the simulation results. The results show that the surface and the position 20 mm from surface exhibit the highest cooling rate, which are mainly composed of fully martensitic microstructure; the cooling rate of the position 40 mm from surface gradually decreases, and a small amount of bainitic structure is obtained during quenching; the cooling rate of central position is less than the critical cooling rate, so the pearlite and bainite transformations occur during quenching process. However, the martensite content in the steel ball center is still maintained at about 80%, indicating that the experimental steel has good hardenability, which can ensure that the steel ball with a diameter of ø120 mm can be completely hardened.

Key words: 70Si2MnV steel, quenching, finite element simulation, CCT curves

中图分类号:

TG142.1

王晓林, 乔娟娟, 李强, 郭辉. 70Si2MnV钢球淬火过程的有限元模拟[J]. 金属热处理, 2021, 46(4): 100-104.

Wang Xiaolin, Qiao Juanjuan, Li Qiang, Guo Hui. Finite element simulation of 70Si2MnV steel ball during quenching process[J]. Heat Treatment of Metals, 2021, 46(4): 100-104.

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70Si2MnV钢球淬火过程的有限元模拟

Finite element simulation of 70Si2MnV steel ball during quenching process

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