不同热处理方式对贝氏体钢组织性能的影响  

Effect of different heat treatments on the rnicrostructure and properties of bainitic steel

作　　者：熊师兵 栾道成[1] 张仁进[1] 田翰林[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《科学与财富》2015年第19期99-100,共2页Sciences & Wealth

摘　　要：本文主要研究了在不同奥氏体化温度、不同冷却方式对贝氏体钢的显微组织、硬度、冲击韧性的影响。实验表明：在不同热处理情况下，贝氏体钢的组纵成分主要为粒状贝氏体和少量钳状或板条状贝氏体。在相同奥氏体化温度下，空冷试验用钢的冲击韧性最好为75．4J，其次是320℃等温处理为48J，炉冷最差46．6J：守冷时的硬度最大为47．4HRC，其次是等温处理45．4HRC，炉冷时候的硬度最低42．3HRC。相同冷却方式下，奥氏体温度越高，硬度越低，冲击韧性有所提高。This paper mainly studied the effects in different austenitizing temperature and cooling ways of bainite steel hardness and impact toughness. Ex- periments showed that： Heal treatment under different eireumstances, tissue components mainly granular bainitie steel bainite and a little needle or lath bainite. Under the same austenitizing temperature, Air-cooled steel toughness tested the most preferable with 75.4 J, Followed by 320 ℃ isothermal treatment for 48 J. Furnace cooling is the worst 46.6 / J; Hardness maximum was air cooling with 47.4 HRC , Followed by isothermal treatment 45.4HRC, the lowest Hardness was 42.3HITC when it was in furnace cooling. Under the same cooling way, the higher austenitie temperature was, more toughness the impact was, and less lower the hardness was.

关 键 词：辙叉贝氏体钢 奥氏体化温度 等温淬火 

分 类 号：TG161[金属学及工艺—热处理]