组织偏析对09MnNiDR钢锥体低温韧性的影响及改善性能热处理  

Effect of Microstructure Segregation on Low-temperature Toughness of 09MnNiDR Cone and Property Improvement Heat Treatment

作　　者：丛轶 曲萍 苑怡 梁玉国 张骥 葛树涛 

机构地区：[1]大连中集重化装备有限公司,辽宁大连116600

出　　处：《压力容器》2015年第6期30-34,18,共6页Pressure Vessel Technology

摘　　要：分析了09Mn Ni DR钢锥体低温韧性不合格的原因,认为主要是由板材组织偏析造成的。通过适当的热处理改变材料的组织种类并进一步细化晶粒,可大幅提高低温冲击吸收能量,获得合格产品。但是,一般热处理无法改变板材组织偏析和冲击吸收能量值不均的情况。The substandard reason of low-temperature toughness of 09MnNiDR cone was analyzed. It was caused by microstructure segregation of steel. After appropriate heat treatment which changed the material＇s microstructure and refined grain further, the impact toughness highly increased. However, general heat treatment could not change the microstructure segregation and non-uniform impact absorb energy.

关 键 词：09MnNiDR钢板 组织偏析 低温韧性 改善性能 热处理 

分 类 号：TH142[一般工业技术—材料科学与工程] TG406[机械工程—机械制造及自动化]