Phase transformation law of H13 steel and numerical simulation of vacuum heat treatment for dies

doi:10.13251/j.issn.0254-6051.2022.05.011

Abstract

Abstract: Aiming at numerical simulation for microstructure evolution predicting of H13 hot work steel dies in vacuum quenching heat treatment, continuous cooling phase transformation tests were performed on the H13 steel by using DIL805L thermal dilatometer, and the continuous cooling transformation curve (CCT curve) of the H13 steel was plotted by combining microstructure and hardness results. The effect of different cooling rate on microstructure and hardness of the specimens was studied, and the phase transformation factors in the Koistinen-Marburger equation were fitted to investigate the phase transformation law of the H13 steel. The results show that the critical cooling rate of martensite transformation is 1 ℃/s, the Ms point is 335 ℃, and with the increase of cooling rate, the hardness of the specimen increases to 660 HV. By importing the fitted martensitic phase transformation equation into finite element software by secondary development means to carry out numerical simulation calculation, the results show that the volume fraction of martensite at different sampling points of H13 steel die is 90%. It can be considered that the microstructure of H13 steel die after vacuum gas quenching is martensite and retained austenite.

Key words: H13 steel, CCT curve, Koistinen-Marburger equation, numerical simulation

CLC Number:

TG151.2

Guo Shuo, Fan Zhenyu, Wang Huizhen, Zhou Leyu, Zhai Yuewen. Phase transformation law of H13 steel and numerical simulation of vacuum heat treatment for dies[J]. Heat Treatment of Metals, 2022, 47(5): 71-75.

References

[1]王林春, 吴永强, 王开坤, 等. 3Cr2NiMo钢模块锻后热处理的数值模拟[J]. 金属热处理, 2021, 46(3): 184-190.
Wang Linchun, Wu Yongqiang, Wang Kaikun, et al. Numerical simulation of heat treatment for 3Cr2NiMo steel module bulk after forging[J]. Heat Treatment of Metals, 2021, 46(3): 184-190.
[2]叶喜葱, 刘绍友, 陈实华, 等. H13热作模具钢锻后热处理工艺[J]. 金属热处理, 2013, 38(12): 72-74.
Ye Xicong, Liu Shaoyou, Chen Shihua, et al. Heat treatment process of H13 hot die steel after forging[J]. Heat Treatment of Metals, 2013, 38(12): 72-74.
[3]郑金涛, 张文虎, 邓四二, 等. 调心滚子轴承感应淬火工艺与组织性能的数值模拟[J]. 材料热处理学报, 2020, 41(2): 133-141.
Zheng Jintao, Zhang Wenhu, Zheng Sier, et al. Numerical simulation of induction hardening process and microstructure performance of spherical roller bearing[J]. Transactions of Materials and Heat Treatment, 2020, 41(2): 133-141.
[4]李超, 周贤良, 华小珍, 等. AP1000 核电主管道淬火过程温度和应力场数值模拟[J]. 金属热处理, 2016, 41(8): 170-174.
Li Chao, Zhou Xianliang, Hua Xiaozhen, et al. Numerical simulation of temperature and stress fields for main pipeline of AP1000 nuclear power during quenching process[J]. Heat Treatment of Metals, 2016, 41(8): 170-174.
[5]樊明强, 毛磊, 秦森, 等. H13钢CCT曲线的测定与分析[J]. 热加工工艺, 2018, 47(2): 129-132.
Fan Mingqiang, Mao Lei, Qin Sen, et al. Determination and analysis of CCT curves of H13 steel[J]. Hot Working Technology, 2018, 47(2): 129-132.
[6]李天生, 徐慧, 刘新彬. 热处理工艺对微Nb高Mo型H13钢组织与性能的影响[J]. 金属热处理, 2019, 44(7): 39-45.
Li Tiansheng, Xu Hui, Liu Xinbin. Effect of heat treatment process on microstructure and properties of niobium microalloyed steel H13 with high molybdenum[J]. Heat Treatment of Metals, 2019, 44(7): 39-45.
[7]徐大成, 卜恒勇, 郑善举, 等. SA508-3钢端淬试验的数值模拟及验证[J]. 金属热处理, 2020, 45(12): 231-237.
Xu Dacheng, Bo Hengyong, Zheng Shanju, et al. Numerical simulation and experimental verification of Jominy test for SA508-3 steel[J]. Heat Treatment of Metals, 2020, 45(12): 231-237.
[8]宋逸思, 李传维, 陈益华, 等. 0Cr16Ni5Mo1马氏体不锈钢的连续冷却相变动力学[J]. 金属热处理, 2021, 46(10): 12-17.
Song Yisi, Li Chuanwei, Chen Yihua, et al. Transformation kinetics of 0Cr16Ni5Mo1 martensitic stainless steel during continuous cooling[J]. Heat Treatment of Metals, 2021, 46(10): 12-17.
[9]林鹏, 马党参, 胡连, 等. 新压铸用模具钢 4Cr5Mo2V 的过冷奥氏体连续冷却转变[J]. 金属热处理, 2018, 43(6): 16-20.
Lin Peng, Ma Dangshen, Hu Lian, et al. Continuous cooling transformation of super-cooled austenite of die steel 4Cr5Mo2V for die-casting[J]. Heat Treatment of Metals, 2018, 43(6): 16-20.
[10]Koistinen D P, Marburger R E. A general equation prescribing the extent of the austenite-martensite transformation in pure iron-carbon alloys and plain carbon steels[J]. Acta Metallurgica, 1959, 7(1): 59-60.

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