摘要
采用金属模具浇注新型ZG20CrSiMn槽帮低碳耐磨铸钢,研究了亚温淬火热处理(QLT)和深冷处理(DCT)复合热处理对其显微组织、力学性能和耐磨损性能的影响。结果表明,与常规调质(QT)、QT+DCT及QLT工艺相比,复合热处理(QLT+DCT)工艺可以显著提高ZG20CrSiMn钢的抗拉强度、韧性以及抗磨损性能。经QLT+DCT工艺处理后的ZG20CrSiMn钢,具有良好的抗拉强度及韧性,这与层片状的细小回火索氏体组织和一定比例的铁素体有关。与QT+DCT工艺处理样品对比,QLT+DCT工艺处理样品具有更好的耐磨损性能。
The novel low carbon abrasion-resistant casting steel ZG20CrSiMn was cast using metal die. Effect of subcritical quenching process（QLT） and deep cryogenic treatment（DCT） on microstructure,mechanical properties and abrasion resistance of the ZG20CrSiMn steel was investigated. The results show that QLT ＋ DCT process can significantly increase tensile strength and toughness of the ZG20CrSiMn steel,compared with the conventional quench-tempering（QT）,QT ＋ DCT and QLT process. Excellent tensile strength,toughness and higher abrasion resistance of the ZG20CrSiMn steel treated by QLT ＋ DCT process is directly connected with lamellar-like and refined sorbite microstructure and ferrite with certain volume fraction. The abrasion-resistant performance of the ZG20CrSiMn steel treated by QLT ＋ DCT is better than that of QT ＋ DCT treatment.
作者
蔡永乐
苏琳飞
阴明
吕仁杰
席庆祥
侯利锋
刘宝胜
CAI Yong-le SU Lin-fei YIN Ming LU Ren-jie XI Qing-xiang HOU Li-feng LIU Bao-sheng(Shanxi Institute of Technology, Yangquan 045000, China College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China College of Material Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2017年第3期97-102,共6页
Transactions of Materials and Heat Treatment
基金
2014年度山西省煤基重点科技攻关项目(MC2014-02)
太原科技大学校博士科研启动项目(20152011)
关键词
低碳铸钢
亚温淬火
深冷处理
力学性能
组织结构
casting low carbon steel
subcritical quenching
deep cryogenic treatment
microstructure
mechanical property
