| 金属夏比V型缺口标准试样的研制 |
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| 引用本文： | 陈龙,张宝珠,韩超,骆昕,彭铁军.金属夏比V型缺口标准试样的研制[J].计量学报,2013,34(6):541-544. |
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| 作者姓名： | 陈龙 张宝珠 韩超 骆昕 彭铁军 |
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| 作者单位： | 北京市计量检测科学研究院, 北京 100029 |
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| 基金项目： | 国家质检总局科技计划项目（2009QK030） |
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| 摘 要： | 介绍了金属夏比V型缺口标准试样的研制原理,采用40CrNiMo制做了低能量和中能量两个能量级的标准试样,并在国家基准冲击试验机上进行试验。结果表明,低能量标准试样的平均冲击值为24.84 J,标准偏差为1.4 J,半年稳定性为0.7%;中能级标准块的平均冲击值为97.51 J,相对标准偏差为3.0%,半年稳定性为0.8%,符合国家标准GB/T 18658-2002要求,实现了冲击能基准量值传递的目标。同时分析了冲击试样加工工艺及其形貌、相结构对冲击能量值的影响。
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| 关 键 词： | 计量学 标准冲击试样 标准偏差 长期稳定性 相结构 |
Development of Metal Charpy V-notch Standard Specimen |
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| CHEN Long,ZHANG Bao-zhu,HAN Chao,LUO Xin,PENG Tie-jun.Development of Metal Charpy V-notch Standard Specimen[J].Acta Metrologica Sinica,2013,34(6):541-544. |
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| Authors: | CHEN Long ZHANG Bao-zhu HAN Chao LUO Xin PENG Tie-jun |
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| Affiliation: | Beijing Institute of Metrology, Beijing 100029, China |
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| Abstract: | The principle of development of metal Charpy V-notch standard specimen is described.Low energy grade and medium energy grade are produced from material of 40CrNiMo and tested using national benchmark impact tester.The results show that for low energy grade specimen, the average impact value is 24.836 J with the standard deviation is 1.4 J and stability during half year is 0.7%. For medium energy grade specimen, the average impact value is 97.514 J with the standard deviation is 3.0% and stability during half year is 0.8%.Both meet the requirements of national standard GB/T 18658-2002 and realize the transfer of impact energy reference value?Further the effects of process of development, microstructure and phase structure on impact energy value are analyzed. |
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| Keywords: | Metrology Standard impact specimen Standard deviation Long-term stability Phase structure |
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