A modified hot tearing criterion for direct chill casting of aluminium alloys

Q.L. Bai; J. C. Liu; H. X. Li; Q. Du; L. Katgerman; J. S. Zhang; L. Z. Zhuang

doi:10.1080/02670836.2015.1104081

A modified hot tearing criterion for direct chill casting of aluminium alloys

Q.L. Bai, J. C. Liu, H. X. Li^*, Q. Du, L. Katgerman, J. S. Zhang, L. Z. Zhuang

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

14 Citations (Scopus)

Abstract

Using the good criteria to predict hot tearing is very important during DC casting of aluminium alloys. Among all the hot tearing criteria, a fracture-mechanics based SKK criterion proposed by Suyitno et al. has made considerable improvements in the hot tearing prediction. However, its obtained hot tearing susceptibility (HTS) evolution during solidification is also not completely consistent with real industrial production circumstances, especially when approaching the solidus temperature. In this paper, some further modifications are made based on the SKK criterion to emphasise the important effect of solid bridging/grain coalescence on hot tear propagation. It is proved that the HTS evolution in freezing range predicted by the modified hot tearing criterion is in good agreement with casting practice.

Original language	English
Pages (from-to)	846-854
Journal	Materials Science and Technology
Volume	32
Issue number	8
DOIs	https://doi.org/10.1080/02670836.2015.1104081
Publication status	Published - 2016

Keywords

A modified hot tearing criterion
Direct chill casting
Fracture mechanics
Hot tearing susceptibility

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10.1080/02670836.2015.1104081

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abstract = "Using the good criteria to predict hot tearing is very important during DC casting of aluminium alloys. Among all the hot tearing criteria, a fracture-mechanics based SKK criterion proposed by Suyitno et al. has made considerable improvements in the hot tearing prediction. However, its obtained hot tearing susceptibility (HTS) evolution during solidification is also not completely consistent with real industrial production circumstances, especially when approaching the solidus temperature. In this paper, some further modifications are made based on the SKK criterion to emphasise the important effect of solid bridging/grain coalescence on hot tear propagation. It is proved that the HTS evolution in freezing range predicted by the modified hot tearing criterion is in good agreement with casting practice.",

keywords = "A modified hot tearing criterion, Direct chill casting, Fracture mechanics, Hot tearing susceptibility",

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T1 - A modified hot tearing criterion for direct chill casting of aluminium alloys

AU - Bai, Q.L.

AU - Liu, J. C.

AU - Li, H. X.

AU - Du, Q.

AU - Katgerman, L.

AU - Zhang, J. S.

AU - Zhuang, L. Z.

PY - 2016

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N2 - Using the good criteria to predict hot tearing is very important during DC casting of aluminium alloys. Among all the hot tearing criteria, a fracture-mechanics based SKK criterion proposed by Suyitno et al. has made considerable improvements in the hot tearing prediction. However, its obtained hot tearing susceptibility (HTS) evolution during solidification is also not completely consistent with real industrial production circumstances, especially when approaching the solidus temperature. In this paper, some further modifications are made based on the SKK criterion to emphasise the important effect of solid bridging/grain coalescence on hot tear propagation. It is proved that the HTS evolution in freezing range predicted by the modified hot tearing criterion is in good agreement with casting practice.

AB - Using the good criteria to predict hot tearing is very important during DC casting of aluminium alloys. Among all the hot tearing criteria, a fracture-mechanics based SKK criterion proposed by Suyitno et al. has made considerable improvements in the hot tearing prediction. However, its obtained hot tearing susceptibility (HTS) evolution during solidification is also not completely consistent with real industrial production circumstances, especially when approaching the solidus temperature. In this paper, some further modifications are made based on the SKK criterion to emphasise the important effect of solid bridging/grain coalescence on hot tear propagation. It is proved that the HTS evolution in freezing range predicted by the modified hot tearing criterion is in good agreement with casting practice.

KW - A modified hot tearing criterion

KW - Direct chill casting

KW - Fracture mechanics

KW - Hot tearing susceptibility

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A modified hot tearing criterion for direct chill casting of aluminium alloys

Abstract

Keywords

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