摘要
研究了铬对锰硅硼低合金耐磨钢组织及性能的影响，结果表明：加入铬合金化后，组织仍然以马氏体和贝氏体为主，存在少量残余奥氏体。随着铬含量增加，马氏体数量增加，贝氏体数量减少。加入铬对钢的硬度基本没有影响，但加入铬明显提高冲击韧性，比相同成分和热处理条件下不加铬钢的冲击韧性提高10J／cm^2左右；还对比了铬对常温及低温冲击韧性影响。
Effect of Cr on mierostructure and properties of Mn--Si--B wear--resistant cast steel was studied. The results showed that the structure of steel with Cr is consisted of major martensite and minor bainite and residual austenite. With the growth of carbon content and chromium content, the quantity of martensite is increasing, the quantity of bainite is decreasing. The hardness of steel can not be affected by adding chromium. However, the crominm amount increase the toughness of steel about 10J/cm^2.
出处
《中国材料科技与设备》
2011年第5期70-72,共3页
Chinese Materials Science Technology & Equipment
基金
武器装备“十二五”预研项目
关键词
铬含量
双相钢
组织
力学性能
Cromium
Mn-- Si-- B cast steel
Microstructure
Mechanical properties
