材料工程Issue(6)：55-58,4.DOI:10.3969/j.issn.1001-4381.2013.06.011
高硼中碳合金工具钢的铸态组织
As-cast Microstructure of High-boron Middle-carbon Alloy Tool Steel
摘要
Abstract
A new wear-resistant material containing boron instead of those high-cost alloying elements was designed for the high contents of alloying elements in common alloy tool steel.The as-cast microstructure of high-boron middle-carbon alloy tool steel was researched by means of optical microscopy,X-ray diffraction,scanning electron microscopy and energy dispersive spectrometer.The results show that the as-cast microstructure of high-boron middle-carbon alloy tool steel consists of lath martensite,a small amount of retained austenite and eutectic borocarbides or boides of Fe2B,Fe3(B,C),Fe23 (B,C)6,Cr7(B,C)3 and (W,Mo)2(B,C).The micro-hardness of the matrix is 540-620HV while that of the hard phase is 1180-1520HV,and the hardness of as-cast high-boron middle-carbon alloy tool steel is 55HRC.关键词
合金工具钢/铸态组织/硼碳化合物/硬度Key words
alloy tool steel/ as-cast microstructure/borocarbide/hardness分类
矿业与冶金引用本文复制引用
严军,岑启宏,蒋业华,周荣..高硼中碳合金工具钢的铸态组织[J].材料工程,2013,(6):55-58,4.基金项目
国家自然科学基金资助项目(51171073 （）
51261013) （）
