高温淬火对扭力轴强韧性的影响  

Effect of High Temperature Quenching on Strength and Toughness of Torsion Axle

作　　者：王延龙[1] 温志强[1] 

机构地区：[1]北京北方车辆集团有限公司,北京100072

出　　处：《金属热处理》2003年第7期31-33,共3页Heat Treatment of Metals

摘　　要：为提高履带车辆 4 5CrNiMoVA钢扭力轴的扭转疲劳寿命 ,经过理论分析和生产验证 ,采用高于常规热处理的淬火温度 ,可在保证强度韧度的同时 ,减少由于第二相质点所形成的疲劳裂纹源 ,延长裂纹形核期 。A torsion axle made of steel 45CrNiMoVA adopts higher temperature hardening rather than conventional hardening,the result showed that the particles of second phase in the steel are dissolved and the fatigue crack sources can be reduced.So the initiation period of fatigue crack could be prolonged and the fatigue life of the torsion axle could be enhanced.

关 键 词：高温淬火 扭力轴 强韧化 疲劳 

分 类 号：TG156.3[金属学及工艺—热处理]