Hot tearing susceptibility of aluminum alloys using CRCM-Horizontal mold

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Abstract

Hot tearing is one of the common defects in casting products. Hot tearing susceptibility (HTS) is evaluated using three casting temperatures: 710, 760 and 810 °C. Four aluminum alloys were obtained from the melting of two ingots and casted into constrained rod casting modified-horizontal (CRCM-H) molds. The HTS equation was developed to evaluate the hot tearing tendency of metal by the length of bars, tear categories, and tear position. This experiment investigated the effect of various casting temperatures on hot tearing tendency. Hot tearing frequently occurred on the sprue end while only a few tears were found on the ball end and mid bar. The HTS index maximum was 55 at a casting temperature of 760 °C in Alloy 2 and the HTS index minimum was 3 at a casting temperature of 760 °C in Alloy 1. Footprint charts were used with axis values that represent the hot tear susceptibility index on cast-samples.

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Akhyar, H., Malau, V., Suyitno, & Iswanto, P. T. (2017). Hot tearing susceptibility of aluminum alloys using CRCM-Horizontal mold. Results in Physics, 7, 1030–1039. https://doi.org/10.1016/j.rinp.2017.02.041

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