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Vol.48, No.5, 436 ~ 445, 2010
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| Title |
| Evaluation of Hot Tear Susceptibility of Al-Si-Mg-Cu Alloy System |
| 손광석 Kwang Suk Son , 박태은 Tae Eun Park , 김진수 Jin Su Kim , 강성민 Sung Min Kim , 김동규 Dong Gyu Kim |
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| Abstract |
| The hot tear susceptibility of Al alloys was investigated by using a constrained-rod mold designed to quantify 8 types of tear tendency. The severity of the crack was scored by 5 grades on a scale of 0 to 4, with 0 being "no crack formed" and 4 being "complete separation by crack". The Hot Tear Susceptibility index (HTS) which consists of crack type scores and position scores, was proposed to compare the hot tear tendency of Al alloys. A356.0 cast alloy and AA6061 wrought Al alloy showed an HTS value of 27.5 and 53 respectively. The effects of Si, Cu, and Mg content on hot tear tendency were also investigated with a constrained-rod mold. The variation of HTS values with alloying elements represents similar behavior in the variation of the solidification range in a pseudo binary phase diagram. |
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| Key Words |
| alloy, casting, solidification, image analysis |
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