27CrMo低合金高强度钢不同加热温度下平衡组织的研究  

Study on Equilibrium Microstructure of 27CrMo Low Alloy High Strength Steel under Different Heating Temperatures

作　　者：朱天军[1] 赵若禹 王书岭 魏志成[1] 吴杨[1] 

机构地区：[1]河北工程大学机械与装备工程学院,河北邯郸056038

出　　处：《热加工工艺》2017年第6期43-45,共3页Hot Working Technology

基　　金：国家自然科学基金项目(51205105);广东省协同创新与平台环境建设项目(2015A050502053);河北省"三三三人才工程"人才培养资助项目(A2016002025)

摘　　要：以27CrMo低合金高强度钢为对象,研究了不同加热温度下该钢种平衡组织的成分变化。通过用差热分析方法(DTA)测定了其相变点。分别选择700、730、760、790、820、850、880、910、940℃作为实验的加热对比温度。结果表明:加热到不同温度并冷却后的平衡组织全部为珠光体和铁素体的混合组织。随着加热温度的升高,珠光体含量从700℃时的44.40%逐渐增大到940℃时的68.01%。Taking low alloy high strength steel 27CrMo as object, the effects of different heating temperatures on the equilibrium microstrueture of the steels were studied. By difference temperature analysis （DTA）, the transformation temperature was tested. 700℃, 730 ℃, 760 ℃, 790 ℃, 820 ℃, 850 ℃, 880 ℃, 910 ℃ and 940 ℃ were chosen as the contrast heating temperatures for experiments. The results show that the equilibrium microstrueture are all the mixture of pearlite and ferrite after heating to different temperatures and then cooling. The content of pearlite increases from 44.40% at 700 ℃ to 68.01% at 940 ℃ with the heating temperature increasing.

关 键 词：低合金高强度钢 加热温度 平衡组织 

分 类 号：TG142.1[一般工业技术—材料科学与工程]