Effect of quenching temperature on microstructure and hardness of 4Cr4Mo3W2V1 die steel

doi:10.13251/j.issn.0254-6051.2024.08.029

Abstract

Abstract: Effect of quenching temperature (990-1070 ℃) on microstructure and hardness of 4Cr4Mo3W2V1 die steel was studied by means of OM, SEM and Rockwell hardness tester. The results show that the microstructure of the quenched 4Cr4Mo3W2V1 steel is mainly martensite, bainite and undissolved carbide. With the increase of quenching temperature, the grain size of the steel increases continuously, the number of carbides in the microstructure decreases continuously, and the hardness increases first and then decreases. Quenched at 1050 ℃, the carbide in the microstructure is basically dissolved into the matrix, the volume fraction of carbide is 0.41%, the grain size does not grow significantly, and the hardness reaches the maximum of 61.4 HRC. 1050 ℃ is the ideal quenching temperature for the 4Cr4Mo3W2V1 steel.

Key words: 4Cr4Mo3W2V1 steel, quenching temperature, microstructure, hardness

CLC Number:

TG161

Liu Zifeng, Zhao Xuliang, Luo Hao. Effect of quenching temperature on microstructure and hardness of 4Cr4Mo3W2V1 die steel[J]. Heat Treatment of Metals, 2024, 49(8): 170-173.

References

[1]邓俊杰, 周健, 刘建雄, 等. 钼含量对4Cr5MoV热作模具钢冷热疲劳性能的影响[J]. 机械工程材料, 2022, 46(4): 48-55.
Deng Junjie, Zhou Jian, Liu Jianxiong, et al. Effect of Mo content on cold and thermal fatigue properties of 4Cr5MoV hot work die steel[J]. Materials for Mechanical Engineering, 2022, 46(4): 48-55.
[2]沈琪, 白玉, 范世超, 等. 热处理工艺对H11热作模具钢力学性能的影响[J]. 热加工工艺, 2022, 51(12): 89-92, 96.
Shen Qi, Bai Yu, Fan Shichao, et al. Effect of heat treatment process on mechanical properties of H11 hot-working die steel[J]. Hot Working Technology, 2022, 51(12): 89-92, 96.
[3]施渊吉, 吴晓春, 闵娜. Fe-Cr-Mo-W-V系热作模具钢高温热稳定性机理研究[J]. 材料导报, 2018, 32(6): 930-936, 956.
Shi Yuanji, Wu Xiaochun, Min Na. Thermal stability mechanism of Fe-Cr-Mo-W-V hot working die steel[J]. Materials Review, 2018, 32(6): 930-936, 956.
[4]陈蒙, 吴日铭. 钒对热作模具钢表面渗碳组织及性能的影响[J]. 模具工业, 2021, 47(11): 74-78.
Chen Meng, Wu Riming. Effect of vanadium on surface carburizing structure and properties of hot working die steel[J]. Die and Mould Industry, 2021, 47(11): 74-78.
[5]孙健, 曹凯. 合金元素对热作模具钢力学性能和相组成的影响[J]. 江苏科技大学学报: 自然科学版, 2019, 33(1): 26-31.
Sun Jian, Cao Kai. Effect of alloying element on mechanical properties and phasecomposition of hot working die steel[J]. Journal of Jiangsu University of Seience and Technology: Natural Science Edition, 2019, 33(1): 26-31.
[6]郑琦, 袁飞, 杜京伦, 等. 热处理对W-Mo-V系改进型热作模具钢组织及力学性能的影响[J]. 材料热处理学报, 2022, 43(9): 94-102.
Zheng Qi, Yuan Fei, Du Jinglun, et al. Effect of heat treatment on microstructure and mechanical properties of W-Mo-V series improved hot work die steel[J]. Transactions of Materials and Heat Treatment, 2022, 43(9): 94-102.
[7]冯萧萧, 苏钰, 李军, 等. 热处理工艺对DIEVAR热作模具钢组织与性能的影响[J]. 金属热处理, 2019, 44(2): 108-112.
Feng Xiaoxiao, Su Yu, Li Jun, et al. Influence of heat treatment on microstructure and mechanical properties of DIEVAR hot working die steel[J]. Heat Treatment of Metals, 2019, 44(2): 108-112.
[8]常永, 李立, 吴少君, 等. 球化温度对4Cr5Mo2V热作模具钢组织和性能的影响[J]. 金属热处理, 2021, 46(3): 46-50.
Chang Yong, Li Li, Wu Shaojun, et al. Effect of spheroidizing temperature on microstructure and properties of 4Cr5Mo2V hot work die steel[J]. Heat Treatment of Metals, 2021, 46(3): 46-50.

[1]	Gao Yukui, Fang Wenyi. Effects of carbon content and heat treatment on microstructure and mechanical properties of TiAl alloys with high Nb [J]. Heat Treatment of Metals, 2024, 49(8): 9-14.
[2]	Zhang Hongliang, Zhou Chunbo, Hou Yan, Jiang Zhiqiang. Research progress on C-Si-Mn partitioned steel [J]. Heat Treatment of Metals, 2024, 49(8): 22-30.
[3]	Liu Yunna, Sun Lican, Dai Guanwen, Liu Xianda, Song Renbo, Zhang Chaolei. Effects of cooling rate and Nb microalloying on microstructure and hardness of 25MnV non-quenched and tempered steel [J]. Heat Treatment of Metals, 2024, 49(8): 31-35.
[4]	Zeng Xiangjun, Shi Zhiming, Zhao Ge, Lian Hao, Liu Jiacheng. Effect of mixed addition of light and heavy rare earth elements on microstructure and mechanical properties of Al-Si-Mg alloy [J]. Heat Treatment of Metals, 2024, 49(8): 36-41.
[5]	Cao Yue, Gao Xueyun, Wang Haiyan, Xing Lei, Lin Hongliang. Effect of rare earth La on microstructure and mechanical properties of Cu-bearing martensitic stainless steel [J]. Heat Treatment of Metals, 2024, 49(8): 42-47.
[6]	Hua Wenjuan, Zhang Jianxun. Effect of aging treatment on properties and fracture behavior of 2319 aluminum alloy fabricated by wire arc additive manufacturing [J]. Heat Treatment of Metals, 2024, 49(8): 60-66.
[7]	Guo Chengyu, Zhang Zhe, Zhang Chi, Dai Chunduo, Hou Huaxing, Li Jiangwen. Effect of Q&P process on microstructure and properties of 1000 MPa grade high strength steel [J]. Heat Treatment of Metals, 2024, 49(8): 67-73.
[8]	Liu Jing, Zhao Ke, Wang Lige. Effect of annealing on microstructure and hardness of Co_xFe₃₅Mn₂₅Cr₁₅Ni₁₀Ti₅ high entropy alloys [J]. Heat Treatment of Metals, 2024, 49(8): 94-101.
[9]	Ren Yunfei, Pan Xinyuan, Wan Tianjian, Li Jinghui, Zhang Mingya. Effect of T6 heat treatment on microstructure and properties of high pressure die cast ADC12 aluminum alloy [J]. Heat Treatment of Metals, 2024, 49(8): 108-112.
[10]	Xu Feng, Sun Qiang, Meng Jiwei. Effect of solution treatment temperature on microstructure and properties of ultra-low carbon 15-5PH precipitation hardened stainless steel [J]. Heat Treatment of Metals, 2024, 49(8): 124-129.
[11]	Yang Yongchao, Li Yugui, Zhao Zijun. Continuous annealing process of 430 stainless steel [J]. Heat Treatment of Metals, 2024, 49(8): 130-135.
[12]	Zhang Yong, Li Ruyang, Ma Qingshan, Hu Xiaodong. Effect of heat treatment on microstructure and mechanical properties of 09MnNiDR low temperature steel welded joint [J]. Heat Treatment of Metals, 2024, 49(8): 136-142.
[13]	Qu Zhiguo, Zhang Wanxin, Bai Xuefei, Wang Dongming, Zhang Youjian. Effect of simulated post weld heat treatment on microstructure and properties of thick gauge 16MnDR steel plate [J]. Heat Treatment of Metals, 2024, 49(8): 147-151.
[14]	Zhou Ruihu, Fan Qigang, Zeng Zhipeng. Improvement of carbonitriding process for bearing rings [J]. Heat Treatment of Metals, 2024, 49(8): 152-155.
[15]	Sun Zhaoqi, Li Tao, Han Qiang, Zhang Xinggang, Bai Yansong, Gao Zhimin. Effect of quenching process on microstructure and hardness of 28MnCrMoRE oil well pipe steel [J]. Heat Treatment of Metals, 2024, 49(8): 160-164.