摘要
目前已有的里氏-布氏换算关系表多适用于碳钢、低合金钢、铸钢,不一定适用于中高合金耐热钢。而在已有的研究中,样品的硬度值分布过宽,在大范围的硬度分布区间进行回归分析可能存在较大的误差。本研究采用顶端淬火法制备了硬度值分布窄且均匀的P91钢样品,在较高硬度区间内对其里氏硬度和布氏硬度的关系进行了回归分析。结果表明,在里氏硬度值640~680高硬度范围内,其回归关系为:HBW=2.083 x HLD-961.7。
The existing leeb-brinell conversion relationship table is more suitable for carbon steel,low alloy steel,cast steel,which may be not suitable for medium and high alloy heat resistant steel.Among them,the hardness difference of samples is large,which may lead to a large regression error in a large hardness range.In this study,samples with narrow hardness distribution of P91 steel was prepared by the end-quenching method,and the relationship between the leeb hardness and brinell hardness was analyzed by regression analysis in the high hardness range.The regression relationship is as follows:HBW=2.083 x HLD-961.7。
作者
金学峰
张启礼
翟孟杰
黄耀杰
张凤林
Jin Xuefeng;Zhang Qili;Zhai Mengjie;Huang Yaojie;Zhang Fenglin(Guangdong Institute of Special Equipment Inspection and Research,Foshan 528251;Guangdong University of Technology,Guangzhou 510006)
出处
《中国特种设备安全》
2021年第7期24-28,共5页
China Special Equipment Safety
基金
广东省质量技术监督局科技计划(2018CT16)。
关键词
P91钢
顶端淬火
里氏硬度
布氏硬度
回归分析
P91 steel
End-quenching
Leeb hardness
Brinell hardness
Regression analysis
