摘要
GB/T 228.1—2021《金属材料拉伸试验第1部分:室温试验方法》于2022年7月1日正式实施。对比了GB/T 228.1—2021相比于GB/T 228.1—2010的主要变化,总结了GB/T 228.1—2021和ASTM E8/E8M⁃21的主要区别。通过范围、名词和术语、符号、试样及尺寸测定、试验设备及准确度、试验要求及性能测定、结果修约、测量不确定度方面对上述标准的技术差异进行对比分析。结果表明,GB/T 228.1—2021相比于GB/T 228.1—2010在技术内容上发生了较大变化,如增加了两种不同类型应变速率控制模式和单轴拉伸试验测定金属材料弹性模量的方法,更改了试验机系统变形补偿横梁位移速率的估算方法等;相比于上述国标,GB/T 228.1—2021和ASTM E8/E8M⁃21之间存在较大的技术差异,在试验时要熟知相关规定。通过标准的对比,有助于标准使用者在实际生产、教学、科研工作中更加深刻地理解和运用相关标准。
GB/T 228.1⁃2021 Metallic Materials⁃Tensile Testing⁃Part 1:Method of Test at Room Temperature was official⁃ly implemented on July 1st,2022.The main changes between GB/T 228.1⁃2021 and GB/T 228.1⁃2010 were com⁃pared,and the main differences between GB/T 228.1⁃2021 and ASTM E8/E8M⁃21 were summarized.The technical differences of the above standards were compared and analyzed in terms of the scope,nouns and terms,symbols,sam⁃ples,and size measurement,testing equipment and accuracy,testing requirements and performance measurement,result rounding off and uncertainty in measurement.The results showed that the technical contents of GB/T 228.1⁃2021 had changed greatly compared with GB/T 228.1⁃2010,for example,adding two different types of strain rate control modes and the method for measuring the elastic modulus of metal materials by uniaxial tensile test,changing the estimation method of displacement rate of deformation compensation beam of testing machine system,etc.Compared with the above national standards,there were great technical differences between GB/T 228.1⁃2021 and ASTM E8/E8M⁃21,so we should be familiar with the relevant provisions during the test.Through the comparison of above standards,it was helpful for standard users to have a deeper understanding and use of relevant standards in actual production,teaching and scien⁃tific research.
作者
刘满雨
霍树斌
杨再勋
张磊
郝增龙
朱厚国
LIU Manyu;HUO Shubin;YANG Zaixun;ZHANG Lei;HAO Zenglong;ZHU Houguo(Harbin Well Welding Co.,Ltd.,Harbin 150028,China;Harbin Welding Research Institute Co.,Ltd.,Harbin 150028,China)
出处
《物理测试》
CAS
2023年第2期59-64,共6页
Physics Examination and Testing
基金
黑龙江省“百千万”工程科技重大专项(2020ZX03A01)。
