低合金高硼高速钢轧辊的铸态组织Microstructure of as-cast low alloy high speed steel roll containing boron
侯建强,符寒光,雷永平,戴建方
摘要(Abstract):
设计了一种用廉价的硼元素部分(或全部)取代普通高速钢轧辊中价格昂贵的合金元素的轧辊。借助光学显微镜(OM)、X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)等方法对高硼高速钢轧辊铸态组织进行研究。结果表明:高速钢轧辊铸态组织主要由马氏体基体和少量的残余奥氏体以及M23(B,C)6,M3(B0.7C0.3)和(W,Mo)2(B,C)碳硼化合物组成,基体显微硬度达到820~950 HV,轧辊的铸态硬度大于64 HRC。
关键词(KeyWords): 高速钢;轧辊;硼化物;组织;硬度
基金项目(Foundation): 科技部中小企业创新基金(10C26213201139);; 云南省院省校科技合作专项(2010AD012)
作者(Author): 侯建强,符寒光,雷永平,戴建方
DOI: 10.13289/j.issn.1009-6264.2011.07.020
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