锆合金维氏硬度试验的测量不确定度评定  

Measurement Uncertainty Evaluation on Vickers Hardness Test of Zirconium Alloy

作　　者：童龙刚 王文礼[1] 李恒羽[2,3] 李刚 张天广[2,3] TONG Longgang;WANG Wenli;LI Hengyu;LI Gang;ZHANG Tianguang(Xi＇an University of Architecture and Technology,Xi＇an 710311,China;State Nuclear Bao Ti Zirconium Industry Company,Baoji 721013,China;State Nuclear Zirconium ＆ Hafnium Physical and Chemical Testing Co.,Ltd.,Baoji 721013,China)

机构地区：[1]西安建筑科技大学,西安710311 [2]国核宝钛锆业股份公司,宝鸡721013 [3]国核锆铪理化检测有限公司,宝鸡721013

出　　处：《理化检验（物理分册）》2018年第11期819-821,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：依据GB/T 4340.1-2009对锆合金带材进行了维氏硬度测试,并按照JJF 1059.1-2012对测试结果进行了不确定度评定。结果表明:锆合金维氏硬度测试的不确定度主要来源于压痕对角线长度测量、试验力值测量、标准硬度块不均匀度、硬度计自身不确定度等多个方面;当取包含因子k=2时,扩展不确定度U_(95)=15.82HV,相对扩展不确定度U_(95,rel)=7.87%。According to GB/T 4340.1-2009,the Vickers hardness of zirconium alloy strip was measured,and the uncertainty of the measurement results was evaluated according to JJF 1059.1-2012.The results show that the uncertainty of Vickers hardness measurement of zirconium alloy mainly comes from many aspects such as measurement of indentation diagonal length,test force value measurement,unevenness of standard hardness block and itself uncertainty of hardness tester.When the coverage factor k=2,the extended uncertainty U95=15.82 HV,and the relative extended uncertainty U95,rel=7.87%.

关 键 词：不确定度评定 维氏硬度 锆合金 

分 类 号：TG115.51[金属学及工艺—物理冶金]