应用退火工艺消除35CrNi3MoV钢的组织遗传  

Use of annealing process for eliminating structural inheritance of 35CrNi3MoV steel

作　　者：胡华军 卞晓春 顾春卫 陆文俊[2] 许晓静[2] 王子路[2] 

机构地区：[1]江阴市恒业锻造有限公司,江苏江阴214400 [2]江苏大学先进制造与现代装备技术工程研究院,江苏镇江212013

出　　处：《金属热处理》2013年第4期64-66,共3页Heat Treatment of Metals

摘　　要：应用等温退火与其他工序相结合的方法对35CrNi3MoV钢进行热处理。结果表明,60 h等温退火+850℃/10 h正火不仅能够消除35CrNi3MoV钢的组织遗传,并且获得了细小均匀的等轴晶,晶粒度可达9～10级。在等温退火前进行高温预回火和临界区高温侧正火会阻碍退火过程中珠光体形成,保留组织遗传特性。Isothermal annealing along with other heat treatments were performed to treat 35CrNi3MoV steel. The results show that 60 h isothermal annealing ＋ 850 ℃/10 h normalizing is able to completely eliminate structural inheritance and gain uniform and fine equiaxed crystal, whose grain size can reach 8-9 grade. The high temperature pre-tempering and normalizing at high temperature side of critical area before isothermal annealing can block pearlite formation during isothermal annealing process and keep the feature of structural inheritance.

关 键 词：35CrNi3MoV钢 组织遗传 等温退火 晶粒度 等轴状晶粒 

分 类 号：TG156.2[金属学及工艺—热处理]