37CrNi3钢过热后冷却方式对断口遗传的影响  

The Effect of the Cooling Manners after Over-Heating on Fracture Surface Inheritance in 37CrNi3 Steel

作　　者：任瑞铭[1] 李国柱[1] 戚正风[2] 

机构地区：[1]大连铁道学院材料工程系 [2]大连铁道学院模具所

出　　处：《大连铁道学院学报》1992年第2期77-81,共5页Journal of Dalian Railway Institute

基　　金：国家自然科学基金

摘　　要：本文结合金相组织,宏观断口和微观断口对37CrNi3钢经1300℃过热,并以不同方式冷却后,再经正常淬火消除过热粗大组织后出现的断口遗传现象进行了研究.结果表明,经过热后淬火,冷待淬火及空冷预处理所出现的断口遗传均属石状断口,其中经过热后直接淬火试样,断口遗传面积最小.The fracture surface inheritance phenomena were investigated combining metallography with the macro and micro fracture surface under the condition of the over-heating at 1300℃ and cooling at the differ- ent manner as wall as quenching then at the normal temperature,which elimiated over-heated structures.It was resulted that the fracture surface inheritances occured with pre-treatment being quenching,cooling to cer- tain temperature and then quenching and cooling in the air from 1300℃,they were all the faceted fracture, the specimen quenching after over-heating had minimum areas of the fracture surface inheritance.

关 键 词：过热 冷却 淬火 石状断口 

分 类 号：TG161[金属学及工艺—热处理]