Experimental evidence of liquid feeding during solidification of a steel

G. Agarwal; M. Amirthalingam; S. C. Moon; R. J. Dippenaar; I. M. Richardson; M. J.M. Hermans

doi:10.1016/j.scriptamat.2017.11.003

Experimental evidence of liquid feeding during solidification of a steel

G. Agarwal^*, M. Amirthalingam, S. C. Moon, R. J. Dippenaar, I. M. Richardson, M. J.M. Hermans

^*Corresponding author for this work

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Abstract

Sufficient liquid feeding under constrained solidification conditions like, those experienced in welding and casting, is vital to avoid solidification cracking. We present the results of unique in-situ experimental observations of liquid feeding in a solidifying steel melt pool. Liquid feeding was observed in the inter-cellular regions during the terminal stage of solidification. An average liquid flow speed of 450–500 μm s⁻¹ was found. A pressure difference of the order of 10⁴ Pa is calculated to cause the liquid flow. The rate of solidification shrinkage and the rate of deformation were found to be less than the rate of liquid feeding.

Original language	English
Pages (from-to)	105-109
Journal	Scripta Materialia
Volume	146
DOIs	https://doi.org/10.1016/j.scriptamat.2017.11.003
Publication status	Published - 2018

Bibliographical note

Accepted Author Manuscript

Keywords

Hot tearing
In-situ
Solidification
Solidification cracking
Steel

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10.1016/j.scriptamat.2017.11.003

ManuscriptR2Accepted author manuscript, 1.38 MBLicence: CC BY-NC-ND

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title = "Experimental evidence of liquid feeding during solidification of a steel",

abstract = "Sufficient liquid feeding under constrained solidification conditions like, those experienced in welding and casting, is vital to avoid solidification cracking. We present the results of unique in-situ experimental observations of liquid feeding in a solidifying steel melt pool. Liquid feeding was observed in the inter-cellular regions during the terminal stage of solidification. An average liquid flow speed of 450–500 μm s−1 was found. A pressure difference of the order of 104 Pa is calculated to cause the liquid flow. The rate of solidification shrinkage and the rate of deformation were found to be less than the rate of liquid feeding.",

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AU - Agarwal, G.

AU - Amirthalingam, M.

AU - Moon, S. C.

AU - Dippenaar, R. J.

AU - Richardson, I. M.

AU - Hermans, M. J.M.

N1 - Accepted Author Manuscript

PY - 2018

Y1 - 2018

N2 - Sufficient liquid feeding under constrained solidification conditions like, those experienced in welding and casting, is vital to avoid solidification cracking. We present the results of unique in-situ experimental observations of liquid feeding in a solidifying steel melt pool. Liquid feeding was observed in the inter-cellular regions during the terminal stage of solidification. An average liquid flow speed of 450–500 μm s−1 was found. A pressure difference of the order of 104 Pa is calculated to cause the liquid flow. The rate of solidification shrinkage and the rate of deformation were found to be less than the rate of liquid feeding.

AB - Sufficient liquid feeding under constrained solidification conditions like, those experienced in welding and casting, is vital to avoid solidification cracking. We present the results of unique in-situ experimental observations of liquid feeding in a solidifying steel melt pool. Liquid feeding was observed in the inter-cellular regions during the terminal stage of solidification. An average liquid flow speed of 450–500 μm s−1 was found. A pressure difference of the order of 104 Pa is calculated to cause the liquid flow. The rate of solidification shrinkage and the rate of deformation were found to be less than the rate of liquid feeding.

KW - Hot tearing

KW - In-situ

KW - Solidification

KW - Solidification cracking

KW - Steel

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DO - 10.1016/j.scriptamat.2017.11.003

M3 - Article

AN - SCOPUS:85034626179

SN - 1359-6462

VL - 146

SP - 105

EP - 109

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Experimental evidence of liquid feeding during solidification of a steel

Abstract

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Keywords

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