热处理工艺对16MnCrS5+H钢奥氏体晶粒度的影响  

Effect of Heat Treatment on Austenite Grain Size of 16MnCrS5+H Steel

作　　者：冶廷全 杨国[1] 马恒春[1] 史文辉 方光锦 张振民 YE Ting-quan;YANG Guo;MA Heng-chun;SHI Wen-hui;FANG Guang-jin;ZHANG Zhen-min(Xining Special Steel Co.,Xining 810005,China)

机构地区：[1]西宁特殊钢股份有限公司,青海西宁810005

出　　处：《甘肃冶金》2020年第5期59-61,共3页Gansu Metallurgy

摘　　要：为解决16MnCrS5+H钢轧后混晶问题,进行了630℃和680℃回火、760℃退火,900℃正火处理试验,采用"模拟渗碳法"(试样热处理工艺:930℃保温4 h油淬)进行奥氏体晶粒度检测及分析。结果表明:当16MnCrS5+H钢轧后出现混晶时,经两相区760℃退火处理,可使得AlN充分析出,增加AlN钉扎结晶的作用,使得奥氏体晶粒细小均匀。In order to solve the problem of mixed grain of 16mncrs5+H steel after rolling,tempering at 630℃and 680℃,annealing at 760℃and normalizing at 900℃were carried out,and the austenite grain size was detected and analyzed by the"simulated carburizing method"(sample heat treatment process:930℃holding for 4 h oil quenching).The results show that when mixed grains appear in 16mncrs5+H steel after rolling,after annealing at 760℃in the two-phase region,AlN can be fully precipitated,the effect of AlN pinning crystallization can be increased,and austenite grains can be fine and uniform.

关 键 词：16MnCrS5+H钢 奥氏体晶粒度 混晶 760℃退火 

分 类 号：TG314[金属学及工艺—金属压力加工]