20Mn23AlV无磁钢组织及热物理性能预测与验证

doi:10.13251/j.issn.0254-6051.2023.11.002

金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 8-15.DOI: 10.13251/j.issn.0254-6051.2023.11.002

20Mn23AlV无磁钢组织及热物理性能预测与验证

唐兴昌^1,2, 程刚虎², 张嘉琦³, 张志坚², 周维莲²

1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
3.天津大学化工学院, 天津 300072

收稿日期:2023-06-18 修回日期:2023-09-13 出版日期:2023-11-25 发布日期:2023-12-27
作者简介:唐兴昌(1981—),男,副研究员,博士,主要研究方向为钢铁及有色金属材料,E-mail:tangxingchanglut@163.com
基金资助:
国家自然科学基金(52061022);嘉峪关市重点研发计划(22-17)

Prediction and validation of microstructure and thermophysical properties of 20Mn23AlV non-magnetic steel

Tang Xingchang^1,2, Cheng Ganghu², Zhang Jiaqi³, Zhang Zhijian², Zhou Weilian²

1. Sate Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou Gansu 730050, China;
2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou Gansu 730050, China;
3. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2023-06-18 Revised:2023-09-13 Online:2023-11-25 Published:2023-12-27

摘要/Abstract

摘要： 利用JMatPro7.0软件模拟预测20Mn23AlV无磁钢的平衡相组成、析出相元素成分、奥氏体化元素含量对无磁钢组织的影响、淬透性、力学性能及热物理性能参数。将模拟参数与部分试验所得数据进行对比分析。计算结果表明,该无磁钢奥氏体占比高达99.89%,其余为第二相强化作用的弥散相,弥散相中占比最多的为金属钒的碳氮化物。该无磁钢在不同冷速下并不会引起组织转变,均为奥氏体相。Mn和Al含量要控制在一定的范围内才能使奥氏体占比最大化。预测和实测力学性能差异不大。随温度的降低,线膨胀系数、比热容、泊松比和导热系数均减小,密度、剪切模量、电导率和杨氏模量均随温度降低而增大。

关键词: JMatPro模拟, 20Mn23AlV无磁钢, 平衡相, 析出相, 力学性能, 热物理性能

Abstract: Equilibrium phase composition, precipitated phase element composition, effect of austenitizing element content on microstructure, hardenability, mechanical properties and thermophysical properties of the 20Mn23AlV non-magnetic steel were simulated and predicted using JMatPro7.0 software. The simulation parameters were compared and analyzed with the data obtained by some experiments. The calculation results show that the austenite content of the non-magnetic steel accounts for 99.89%, the rest is the dispersed phase with second phase strengthening effect, and the carbon nitride with the highest proportion in the dispersed phase is vanadium metal. The non-magnetic steel does not cause microstructure transformation at different cooling rates, and it is all austenite. The content of Mn and Al should be controlled within a certain range to maximize the proportion of austenite. There is a little difference between the predicted and the measured mechanical properties. With the decrease of temperature, the linear expansion coefficient, specific heat, Poisson's ratio and thermal conductivity decrease, while the density, shear modulus, conductivity and Young's modulus increase.

Key words: JMatPro simulation, 20Mn23AlV non-magnetic steel, equilibrium phase, precipitated phase, mechanical properties, thermophysical properties

中图分类号:

TG142.1

唐兴昌, 程刚虎, 张嘉琦, 张志坚, 周维莲. 20Mn23AlV无磁钢组织及热物理性能预测与验证[J]. 金属热处理, 2023, 48(11): 8-15.

Tang Xingchang, Cheng Ganghu, Zhang Jiaqi, Zhang Zhijian, Zhou Weilian. Prediction and validation of microstructure and thermophysical properties of 20Mn23AlV non-magnetic steel[J]. Heat Treatment of Metals, 2023, 48(11): 8-15.

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20Mn23AlV无磁钢组织及热物理性能预测与验证

Prediction and validation of microstructure and thermophysical properties of 20Mn23AlV non-magnetic steel

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