摘要
晶粒度是晶粒大小的量度,探讨晶粒度测量不确定度的评定方法可以使晶粒度的测量更加准确、可靠。文中依据YS/T 449-2002的截距法,借助Leica DM2500金相显微镜和JX-2000金相分析软件对铜合金试样的晶粒度进行了测量,并对被测量晶粒度的影响因素进行的分析,进而评定了晶粒度的测量不确定度。结果表明:与截点个数相比,测量线段的长度对晶粒度的测量不确定度的影响较大;采用该方法可以准确地对测量不确定度进行评定。
Grain size is a measure of grain size. The discussion on the evaluation method of measurement uncertainty of grain size can make the measurement of the grain size more accurate and reliable. On the basis of YS/T 449-2002 intercept method, by Leica DM2500 optical microscope and JX-2000 metallographic analysis sol＇ware, this paper measured copper-alloy grain size and analyzed the influencing factors of grain size, then assessed measurement uncertainty of the grain size. The results showed that： compared with the number of cut points, the influence of the length of a measuring line is bigger; the method can accurately assess the uncertainty of measurement.
出处
《质量技术监督研究》
2015年第2期9-11,15,共4页
Quality and Technical Supervision Research
关键词
晶粒度
测量不确定度
截距法
Grain size
Measurement uncertainty
Intercept method
