淬火温度和回火工艺对4Cr5Mo2V钢高温耐磨性能的影响
Effect of Quenching Temperature and Tempering Process onHigh Temperature Wear Resistance of 4Cr5Mo2V Steel
摘 要
将4Cr5Mo2V钢在1 000~1 090 ℃下淬火,并通过不同温度2次回火处理将相同淬火温度下试验钢的回火硬度分别调整至55,52 HRC,研究了淬火温度和回火工艺对显微组织、冲击韧性和高温(350 ℃)耐磨性能的影响。结果表明:回火硬度相同时,淬火温度过高或过低均会降低试验钢的韧性而加剧磨损表面材料剥落,从而降低耐磨性能;相同回火硬度下,1 030 ℃淬火条件下试验钢的韧性和高温耐磨性能最好,1 090 ℃淬火条件下最差;淬火温度相同时,较低温度回火试验钢因具有较高回火硬度,能够起到支撑表面氧化层的作用,其耐磨性能比较高温度回火时好;4Cr5Mo2V钢的推荐热处理工艺为1 030 ℃×30 min油淬+560 ℃×2 h×2次回火。
淬火温度
回火工艺
高温耐磨性能
4Cr5Mo2V steel
quenching temperature
tempering process
high temperature wear resistance
Abstract
The 4Cr5Mo2V steel was quenched at 1 000-1 090 ℃. The tempering hardness of the test steel quenched at the same temperature was adjusted to 55,52 HRC by tempering twice at different temperatures, and the effects of the quenching temperature and tempering process on the microstructure, impact toughness and high temperature (350 ℃) wear resistance were studied. The results show that when the tempering hardness was the same, too high or too low quenching temperatures would reduce the toughness of the test steel and aggravate the peeling of the wear surface material, thereby reduced the wear resistance. Under the same tempering hardness, the toughness and high temperature wear resistance of the test steel quenched at 1 030 ℃ were the best, and at 1 090 ℃ were the worst. When the quenching temperature was the same, the test steel tempered at relatively low temperatures had higher tempering hardness, which could support the surface oxide layer, so its wear resistance was better than that tempered at relatively high temperatures. The recommended heat treatment process for 4Cr5Mo2V steel was 1 030 ℃×30 min oil quenching +560 ℃×2 h tempering for twice.
中图分类号 TG142.45 DOI 10.11973/jxgccl202304013
所属栏目 材料性能及应用
基金项目 广东省重点领域研发计划项目(2020B010184002)
收稿日期 2022/3/4
修改稿日期 2022/3/13
网络出版日期
作者单位点击查看
备注周百航(1998-),男,江西九江人,硕士研究生
引用该论文: ZHOU Baihang,ZUO Pengpeng,WU Xiaochun. Effect of Quenching Temperature and Tempering Process onHigh Temperature Wear Resistance of 4Cr5Mo2V Steel[J]. Materials for mechancial engineering, 2023, 47(4): 67～73
周百航,左鹏鹏,吴晓春. 淬火温度和回火工艺对4Cr5Mo2V钢高温耐磨性能的影响[J]. 机械工程材料, 2023, 47(4): 67～73
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【8】李璞.力学性能对模具钢冲击磨损行为的影响[D].洛阳:河南科技大学,2020. LI P.Effect of mechanical properties on repetitive impact wear behavior of mold steels[D].Luoyang:Henan University of Science and Technology,2020.
【9】LAI J P,YU J X,WANG J.Effect of quenching-partitioning treatment on the microstructure,mechanical and abrasive properties of high carbon steel[J].International Journal of Minerals,Metallurgy and Materials,2021,28(4):676-687.
【10】李爽.新型热冲压模具钢组织与高温摩擦磨损机理研究[D].上海:上海大学,2017. LI S.The study on microstructure and high temperature friction and wear mechanism of new type hot stamping die steel[D].Shanghai:Shanghai University,2017.
【11】刘润,张家玮,刘家安,等.热处理工艺对铸造汽车覆盖件模具钢的耐磨性研究[J].摩擦学学报,2017,37(2):185-191. LIU R,ZHANG J W,LIU J A,et al.Wear resistance of heat treatment on casting automobile covering parts die steel[J].Tribology,2017,37(2):185-191.
【12】胡涛,吴日铭,李方杰,等.奥氏体化温度对4Cr5Mo2V热作模具钢耐磨性的影响[J].模具工业,2021,47(12):54-60. HU T,WU R M,LI F J,et al.Effect of austenitizing temperature on wear resistance of 4Cr5Mo2V hot work die steel[J].Die & Mould Industry,2021,47(12):54-60.
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