回火态AerMet100钢的热物理性能

doi:10.13251/j.issn.0254-6051.2022.06.032

金属热处理 ›› 2022, Vol. 47 ›› Issue (6): 168-172.DOI: 10.13251/j.issn.0254-6051.2022.06.032

回火态AerMet100钢的热物理性能

焦清洋, 赵栋, 王新宇, 李世键

沈阳飞机工业(集团)有限公司, 辽宁沈阳 110850

收稿日期:2022-01-10 修回日期:2022-04-12 出版日期:2022-06-25 发布日期:2022-07-05
作者简介:焦清洋(1978—),男,研究员级高工,硕士,主要研究方向为热处理变形控制,E-mail: jiaoqy@sina.com

Thermo-physical properties of tempered AerMet100 steel

Jiao Qingyang, Zhao Dong, Wang Xinyu, Li Shijian

Shenyang Aircraft Industry (Group) Co., Ltd., Shenyang Liaoning 110850, China

Received:2022-01-10 Revised:2022-04-12 Online:2022-06-25 Published:2022-07-05

摘要/Abstract

摘要： AerMet100钢是一种先进的二次硬化型Ni-Co-Cr系结构钢,通过试验获得了回火态AerMet100钢的密度、热应变、弹性模量、泊松比、热导率、流变应力随温度的变化情况,以及升温过程奥氏体转变Ac₁和Ac₃点,降温过程马氏体转变Ms点和马氏体转变系数K_m。最后基于获得的回火态AerMet100钢热物理性能数据,以齿轮淬火过程为例,采用SYSWELD有限元分析软件进行了仿真分析。结果表明,回火态AerMet100钢的室温组织为回火马氏体+残留奥氏体,在升温过程中奥氏体反应热焓为42 600 J/kg,其他热物理性能参数均在Ac₁~Ac₃范围内发生非线性变化,且测试状态和升温速度不同导致Ac₁和Ac₃存在差异,回火态AerMet100钢不同冷却速度下的Ms基本一致,约为213 ℃,马氏体转变系数K_m值为0.011 736。SYSWELD有限元仿真分析表明,试验获得的各项热物理性能数据可用于该钢的热处理模拟分析。

关键词: AerMet100钢, 热物理性能参数, 相变行为, 有限元分析

Abstract: Aermet100 steel is an advanced secondary hardening Ni-Co-Cr structural steel. The change of its density, thermal strain, elastic modulus, Poisson's ratio, thermal conductivity and flow stress with temperature were obtained by experiment, and the Ac₁ and Ac₃ for austenite transformation during heating, the Ms for martensite transformation and martensitic transformation coefficient K_m during cooling were obtained. Finally, based on the data of thermo-physical properties of the tempered AerMet100 steel, the simulation of gear quenching process was carried out by using SYSWELD finite element analysis. The results show that the room temperature microstructure of tempered AerMet100 steel consists of tempered martensite and residual austenite. In the heating process, the austenite reaction enthalpy is 42 600 J/kg, other thermal-physical parameters change non-linearly in the range of Ac₁-Ac₃, and different test states and heating rates leads to different values of Ac₁ and Ac₃. The Ms of the tempered AerMet100 steel quenched at different cooling rates is basically the same as about 213 ℃, and the K_m value is 0.011 736. The SYSWELD finite element simulation analysis results show that the thermal physical properties obtained from the test can be used for the heat treatment process simulation of the steel.

Key words: AerMet100 steel, thermo-physical parameters, phase transformation behavior, finite element analysis

中图分类号:

TG441.8

焦清洋, 赵栋, 王新宇, 李世键. 回火态AerMet100钢的热物理性能[J]. 金属热处理, 2022, 47(6): 168-172.

Jiao Qingyang, Zhao Dong, Wang Xinyu, Li Shijian. Thermo-physical properties of tempered AerMet100 steel[J]. Heat Treatment of Metals, 2022, 47(6): 168-172.

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回火态AerMet100钢的热物理性能

Thermo-physical properties of tempered AerMet100 steel

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