超高强度钢50CrNiMoVA等温淬火工艺对强韧性的影响  

Influence of Ultra-high Strength Steel 50CrNiMoVA Austempering Process on the Strength and Toughness

作　　者：卢旭东[1] 叶斌[1] 王洪军[1] 王军辉[2] 

机构地区：[1]杭州东华链条集团有限公司,浙江杭州311102 [2]东风汽车有限公司,湖北武汉430056

出　　处：《机械传动》2012年第1期26-27,34,共3页Journal of Mechanical Transmission

摘　　要：以汽车分动器链条总成用超高强度钢50CrNiMoVA作为研究对象,通过不同工艺的等温淬火工艺验证和金相分析,考察了淬火温度的变化对材料显微组织和力学性能的影响,并在此基础上得出了该钢种的最佳热处理工艺。结果表明,采用910℃加热+320℃盐浴等温淬火工艺,明显改善了钢的强韧性。Taking the high strength steel 50CrNiMoVA used in the chain of the automotive sub - actuator as the study object, using different processes of austempering process validation and metallographic analysis, the quenching temperature effect on the material microstructure and mechanical property are investigated. On this basis, the best heat treatment process of the steel is obtained. The results show that, using 910℃ heating and 320℃ salt bath austempering process, the strength and toughness is significantly improved.

关 键 词：超高强度钢 链条 等温淬火 力学性能 

分 类 号：TG156.3[金属学及工艺—热处理]