Discussion on the Method of Grain Size Measurement of Aluminium Alloy
By comparing and analyzing four aluminium alloy grain size testing standards,the consistency and difference between the standards were clarified.Based on the two standards of GB/T 3246.1-2012 and GB/T 3246.2-2012,this paper discusses and analyz-es the problems existing in the actual measurement process of aluminium alloy grain size.Suggestions are given for the pre-treatment method,etching method,and result judgment standard of grain size test samples,providing reference solutions for similar testing problems and promoting the continuous improvement of aluminum alloy grain size testing methods.