CAJ | 학술논문

通过不同氮含量、原始状态和热处理制度的18CrNiMo7-6钢950℃保温50h晶粒度试验研究表明：锻材经1160℃正火处理，950℃保温时AlN充分析出，抑制晶粒长大作用明显，保温50h晶粒没有异常长大，完全可以满足渗碳齿轮用钢对晶粒度的要求。
통과불동담함량、원시상태화열처리제도적18CrNiMo7-6강950℃보온50h정립도시험연구표명：단재경1160℃정화처리，950℃보온시AlN충분석출，억제정립장대작용명현，보온50h정립몰유이상장대，완전가이만족삼탄치륜용강대정립도적요구。
In this paper, the grain size test of 18CrNiMo7-6 steel with different N contents, original states and heat treatment processes after holding at 950℃for 50 hours was carried out, the results show that AlN precip-itated sufficiently during holding at 950℃after normalizing at 1160℃of the forged products, which obviously prevented grain growth;the grain did not grow abnormally after holding for 50 hours, which fully meet the grain size requirement of steel for carburized gear.