摘要
中碳中合金钢是近年发展起来的一种新型耐磨材料,可通过微合金化和变质处理来提高该钢种的强韧性。本研究以ZG70Cr2MnNiSi钢为研究对象,选用了两种稀土复合变质剂对其进行变质处理,测试并比较了不同变质剂处理后钢的力学性能和磨损性能,分析了钢的XRD物相图谱、金相组织、断口形貌和TEM微观组织,研究结果表明:变质处理有利于马氏体高密度位错的形成,促进了组织细化和碳化物的弥散析出,从而提高了铸钢的综合力学性能。
Medium carbon medium alloy steel is a new type of wear resistant material developed in recent years. The steel＇s obdurability can be improved by mi- croalloying and modification. This research took ZG70Cr2MnNiSi steel as object of study, chose two kinds of rare earth composite modifiers, made the modifying experiments, tested and compared mechani- modification. The XRD phase diagram, metallographic organization, fracture morphology and TEM fine tex- ture were analyzed. The result showed that the modifi- cation treatment promoted the formation of high-density dislocation martensite, and promoted organization refi- ning and dispersion precipitation of carbide, so im- proved the comprehensive mechanical properties of cal property and wear properties of steel with different cast steel.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2013年第3期315-320,共6页
Journal of the Chinese Society of Rare Earths
基金
河南省国际科技合作项目(084300510006)资助
关键词
中碳中合金钢
稀土变质
耐磨性能
断口形貌
粒状碳化物
medium carbon medium alloy steel
rare earth modifying
abrasion resistance
fracture morphology
granular carbide
