摘要
分析并总结了近几年对GB/T 228.1-2010和ISO 6892-1:2009的不同解读及争论,指出了弹性段速率不影响试验结果,屈服段的速率才影响试验结果;有反馈控制功能的拉伸试验机采用方法 B应按照上述两标准中10.4.2.2~10.4.2.4款的规定,标准中10.4.2.1款及表3仅适用于没有反馈控制功能的液压拉伸试验机;对于有反馈控制功能的拉伸试验机,方法 C能同时适用于连续屈服试样和不连续屈服试样,既能够克服方法 A试验结果显著偏低、效率低、可行性差的问题,又能克服方法 B速率范围宽、再现性差的问题,并且操作简单、效率适中还能与传统方法测得的历史数据基本保持一致;方法 A作为一种试验结果比传统方法显著偏低的方法,只能在材料标准中指定或相关方协议规定的情况下使用。
The different interpretations and debates on GB/T 228.1-2010 and ISO 6892-1：2009 in recent years were analyzed and summarized.It is pointed out that tension rate in elastic section does not affect the test results,and tension rate in yield section affects the test results.The tensile test machine with feedback control function adopts the method B shall be in accordance with the requirements of the above two standards 10.4.2.2-10.4.2.4,10.4.2.1 and table 3 in the standard are only applicable to hydraulic tensile test machines without feedback control functions.For the tensile test machine with feedback control function,method C can also be apply to both continuous yield specimens and discontinuous yield specimens.It can not only overcome the problems of markedly low test results,low efficiency and poor feasibility of method A,but also overcome the problems of wide speed range and poor reproducibility of method B.Moreover,the method C is easy to operate and has moderate efficiency,and it can be basically consistent with the historical data measured by traditional methods.Method A,as a method with significantly lower test results than traditional methods,can only be used when specified in the material standards or in the relevant agreements.
作者
李和平
LI Heping(Test,Analysis and Inspection Center,Baoshan Iron ＆ Steel Co.,Ltd.,Shanghai 200941,China)
出处
《理化检验（物理分册）》
CAS
2018年第9期621-628,646,共9页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
金属材料
拉伸试验方法
标准修订
拉伸速率控制方法
metallic material
tensile test method
standard revision
tensile rate control method
