热处理对空冷贝氏体/马氏体复相耐磨铸钢组织与性能的影响  

Effect of heat treatment on microstructure and mechanical properties of air-cooled bainite/martensite composite wear resistant cast steel

作　　者：张从容[1] 张拓燕[1,2] 董洁[1] 杨军[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]陕西宏远航空锻造有限责任公司,陕西三原713801

出　　处：《金属热处理》2013年第2期92-94,共3页Heat Treatment of Metals

基　　金：陕西省教育厅工业攻关基金(2010JK654);西安建筑科技大学基金(RC0912)

摘　　要：研究了不同热处理工艺对空冷贝氏体/马氏体复相耐磨铸钢组织与性能的影响。结果表明,本试验所设计的耐磨钢经过不同的热处理工艺均得到了贝氏体/马氏体复相组织,780℃球化退火×3 h,炉冷+920℃×1 h,砂冷+500℃回火×1 h,空冷的热处理制度可使材料获得最佳的综合性能,其冲击韧度均值为12 J/cm2,硬度值可达到51 HRC,并且耐磨性能良好。Influence of heat treatment on microstructure and mechanical properties of bainite/martensite composite steel were investigated. The results show that the experimental steel can obtain hainite/martensite composite microstructure under different heat treatments. The steel samples spheroidized at 780℃ for 3 h with furnace cooling, then austenized at 920℃ for 1 h with sand cooling and tempered at 500℃ for 1 h can gain preferable comprehensive properties with hardness of 51 HRC, toughness of 12 J/cm^2 , and excellent wear resistance.

关 键 词：热处理 空冷贝氏体钢 组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]