Nanoindentation characterization of non-metallic inclusions in free cutting steel

被引：0
作者：
Wang, Yu-Nan [1 ,2 ]
Bao, Yan-Ping [1 ,2 ]
Wang, Min [3 ]
机构：
[1] State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing
[2] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing
[3] National Engineering Research Center of Flat Rolling Equipment, University of Science and Technology Beijing, Beijing
来源：
Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | 2014年 / 36卷 / 07期
关键词：
Boron nitride; Cutting performance; Free cutting steel; Hardness; Nanoindentation; Non-metallic inclusions;
D O I：
10.13374/j.issn1001-053x.2014.07.008
中图分类号：
学科分类号：
摘要：
Inclusions in free cutting steel such as BN, MnS, Al2O3 and TiN were characterized by nanoindentation. The improvement of BN inclusions on the machinability of the steel was discussed. The error between nanoindentation and macrohardness measurement was analyzed. The hardness of BN inclusions in as-cast samples is lower than that of MnS inclusions, but BN inclusions after forging become harder than MnS, even though these three kinds of inclusions are far softer than the based metal. BN inclusions in as-cast samples and forged samples are stress concentration sources, lubricants and enclose hard particles, therefore improve the machinability of the steel. Nanoindentation characterization and macrohardness measurement have certain error.
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页码：903 / 909
页数：6
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