热处理对15%热变形低铬耐磨铸铁冲击韧度的影响  

Effect of Heat Treatment on Impact Toughness of Low Chromium Wear Resistant Cast Iron Hot Deformed by 15%

作　　者：马强[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《热处理》2011年第4期45-47,共3页Heat Treatment

摘　　要：采用金相显微镜﹑扫描电镜和冲击试验研究了热处理对经970℃15%热变形的低铬耐磨铸铁冲击韧度的影响。结果表明,15%热变形低铬耐磨铸铁经970℃保温3 h正火后,可获得较高的冲击韧度,但其硬度变化不大。Effect of heat treatment on impact toughness of low chromium wear resistant cast iron hot deformed by 15% at 970 ℃ was investigated by means of optical microscope,SEM and impact test.The results show that impact toughness of the cast iron was improved through normalization at 970 ℃ for 3 h with little change in hardness.

关 键 词：低铬耐磨铸铁 热变形 热处理 冲击韧度 

分 类 号：TG164[金属学及工艺—热处理]