淬火冷却温度对工程机械用中锰钢淬火-配分后组织与性能的影响
Effect of Quenching Cooling Temperature on Structure and Properties of Medium Manganese Steel for Construction Machinery after Quenching and Partitioning
摘 要
对热轧态中锰钢进行淬火-配分处理,研究了淬火冷却温度(195,220,255,280 ℃)对其显微组织、物相组成、硬度和拉伸性能的影响。结果表明:淬火-配分处理后中锰钢中存在板条马氏体、块状马氏体和残余奥氏体;随着淬火冷却温度升高,板条马氏体含量减少,块状马氏体含量增加,残余奥氏体体积分数先增大后减小,当淬火冷却温度为220 ℃时最大,为19.81%;随着淬火冷却温度的升高,中锰钢的硬度增大,抗拉强度、屈服强度和断后伸长率先增大后减小,当淬火冷却温度为220 ℃时中锰钢的断后伸长率和强塑积最大,分别为15.6%和23.76 GPa·%。
淬火-配分
淬火冷却温度
显微组织
力学性能
medium manganese steel
quenching and partitioning
quenching cooling temperature
microstructure
mechanical property
Abstract
Quenching and partitioning treatment was carried out on the hot-rolled medium manganese steel, and the effects of quenching cooling temperature (195,220,255,280 ℃) on its microstructure, phase composition, hardness, and tensile properties were studied. The results show that lath martensite, massive martensite and residual austenite were found in the medium manganese steel after quenching and partitioning treatment. With increasing quenching cooling temperature, the content of lath martensite decreased, the content of massive martensite increased, and the volume fraction of residual austenite first increased and then decreased, reaching the maximum of 19.81% at quenching cooling temperature of 220 ℃. With increasing quenching cooling temperature, the hardness of the medium manganese steel increased, and the tensile strength, yield strength, and elongation after fracture first increased and then decreased. When the quenching cooling temperature was 220 ℃, the elongation after fracture and the product of strength and elongation of the medium manganese steel were the highest, which were 15.6% and 23.76 GPa·%,respectively.
中图分类号 TG142.1 DOI 10.11973/jxgccl202306004
所属栏目 试验研究
基金项目 江苏省扬州市校合作专项课题(YZ2020177)
收稿日期 2022/4/13
修改稿日期 2023/5/9
网络出版日期
作者单位点击查看
备注王波(1979-),男,山东烟台人,副教授,硕士
引用该论文: WANG Bo,ZHANG Qijing,XU Yingmei. Effect of Quenching Cooling Temperature on Structure and Properties of Medium Manganese Steel for Construction Machinery after Quenching and Partitioning[J]. Materials for mechancial engineering, 2023, 47(6): 20～24
王波,张崎静,徐颖梅. 淬火冷却温度对工程机械用中锰钢淬火-配分后组织与性能的影响[J]. 机械工程材料, 2023, 47(6): 20～24
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【4】LIN G Q,LAN H F,DU L X.Modelling and experimental validation of austenite growth from as-quenched martensite during intercritical annealing of a medium-Mn steel[J].Journal of Materials Science,2021,56(34):19165-19179.
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【6】WANG M,HUANG M X.Abnormal TRIP effect on the work hardening behavior of a quenching and partitioning steel at high strain rate[J].Acta Materialia,2020,188:551-559.
【7】SCHNEIDER R,KAAR S,SCHNEIDER S,et al.Comparison of the hardness-toughness relationship of medium-Mn steels after Q&T and Q&P treatments[J].HTM Journal of Heat Treatment and Materials,2021,76(6):445-457.
【8】孟传峰,王一德,卫英慧,等.工程机械用TQ960E微合金化低碳高强度钢的开发[J].特殊钢,2018,39(6):66-70. MENG C F,WANG Y D,WEI Y H,et al.The development of mechanical engineering of TQ960E microalloyed high strength low carbon steel[J].Special Steel,2018,39(6):66-70.
【9】HAJYAKBARY F,SIETSMA J,MIYAMOTO G,et al.Interaction of carbon partitioning,carbide precipitation and bainite formation during the Q&P process in a low C steel[J].Acta Materialia,2016,104:72-83.
【10】米俊龙,贾涓,李建,等.Mn含量对中锰钢Q&P工艺组织及性能的影响[J].材料热处理学报,2019,40(12):106-111. MI J L,JIA J,LI J,et al.Effect of Mn content on microstructure and properties of medium manganese steel treated by Q&P process[J].Transactions of Materials and Heat Treatment,2019,40(12):106-111.
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【13】LI Y J,KANG J,ZHANG W N,et al.A novel phase transition behavior during dynamic partitioning and analysis of retained austenite in quenched and partitioned steels[J].Materials Science and Engineering:A,2018,710:181-191.
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【18】BLANKART C,WESSELMECKING S,KRUPP U.Influence of quenching and partitioning parameters on phase transformations and mechanical properties of medium manganese steel for press-hardening application[J].Metals,2021,11(11):1879-1879.
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