Abstract
In this paper, the ASTM grain size number of aluminium alloy specimen was determined by the Abrams three-circle procedure and planimetric procedure, according to ASTM E112-13 standard, and the measurement uncertainty was evaluated. Based on the test data and theoretical analysis, the %RA limit for acceptability of ASTM E112 grain size measurement was discussed. The following two corrections are made: when G is determined via the Abrams threecircle and planimetric procedures, the %RA limit should not exceed 8.4% and 16.1%, respectively, instead of earlier regulated value of 10%.
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CITATION STYLE
Bi, G., Guan, Y., Chen, X., Tan, W., Huang, W., Gao, Y., & Wang, M. (2020). Acceptability analysis for determining the average grain size by ASTM E112 standard. In IOP Conference Series: Materials Science and Engineering (Vol. 770). Institute of Physics Publishing. https://doi.org/10.1088/1757-899X/770/1/012023
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