Abstract
Quality index of cast aluminum alloys is a measure for quality evaluation of the cast aluminum alloys based on its mechanical properties. There are some quality indices Q, QR, QC, Q0, etc. The purpose of this paper is to select the most representative quality index that best reflects the mechanical properties, other quality indices and overall performance of the cast aluminum alloys from among some quality indices, and use it to evaluate the overall performance of the cast aluminum alloys instead of multi-criteria decision-making (MCDM) methods. We proposed three methods to select the most representative quality index based on correlation analysis, rank deviation analysis and MCDM methods. We conducted the correlation analysis and the rank deviation analysis between the quality indices, the mechanical properties and the overall performance scores from the MCDM methods such as SAW, WPM and TOPSIS with the data of the tensile properties and the quality indices of 37 different test series from 2xx, 3xx and 7xx aluminum series. We found that Q0 and Q best reflect the mechanical properties and the overall performance of the cast aluminum alloys as well as well-known MCDM methods, and the next is Q. The foundry engineers can use the most representative quality index Q0 and Q to evaluate the overall performance of the cast aluminum alloys and select the best one with simple computation.
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Acknowledgement
This work was supported by Kim Chaek University of Technology, Democratic People’s Republic of Korea. The supports are gratefully acknowledged. The authors thank the editors for their helpful suggestions for improvement and publication of this manuscript. The authors also like to thank the anonymous referees for their valuable comments which greatly improved the quality of the paper.
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Yang, WC., Yang, JY., Om, MS. et al. Method to Evaluate Overall Performance of Cast Aluminum Alloys Using Most Representative Quality Index Instead of MCDM Method. Inter Metalcast 16, 1544–1556 (2022). https://doi.org/10.1007/s40962-021-00690-9
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DOI: https://doi.org/10.1007/s40962-021-00690-9