退火温度对9CrWMn钢组织及硬度的影响  

Effect of annealing temperature on the structure and hardness of 9CrWMn steel

作　　者：郭强[1] 牛伟[1] 孙大利[1] 李涛[1] 

机构地区：[1]抚顺特殊钢股份有限公司技术处,辽宁抚顺113001

出　　处：《物理测试》2015年第6期18-20,共3页Physics Examination and Testing

摘　　要：为了研究不同的退火温度对合金冷作模具钢9Cr WMn钢组织及硬度的影响,在实验室使用厢式退火炉,分别按照400、600、680、700、720、740、760、770、780、800、820、840、880、920℃退火温度进行退火,磨制成金相试样,利用布氏硬度计检验硬度,采用金相显微镜对组织进行观察。通过对试样硬度及组织分析,结果表明:9Cr WMn冷作模具钢在770℃退火时,硬度最低,球化组织最好,为均匀细小的球化珠光体组织。In order to study the effect of different annealing temperature on the steel structure and hardness of cold work die steel 9CrWMn, box annealing furnace was used in the laboratory to anneal and grind into metallographic specimen in the annealing temperature of 400,600,680,700,720,740,760,770,780,800,820,840,880,920 ℃ respectively.Brinell hardness tester was used to test hardness and metallographic microscope was used to observe steel structure. The result of hardness and structure analysis of sample steel showed cold work die steel 9CrWMn was fine and uniform spheroidized perlite structure with lowest hardness and best spheroidized structure at the annealing temperature of 770 ℃.

关 键 词：低合金冷作模具钢 9CrWMn钢 球化 硬度 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—金属材料]