On the formation of interdendritic cracking phenomena in direct chill casting of aluminum alloy slabs

• The formation of interdendritic crack of continuously cast aluminum alloy slabs has been studied by macrosegegation analysis of cast samples and by performing a set of mathematical analyses of heat flow, solidification, interdendritic strain and interdendritic cracking criteria. The study has revealed that the interdendritic cracking phenomena depends mainly on the interdendritic coherernt region width and the accumulated interdendritic strain generated due to various cooling conditions during dendritic solidification process. Interdendritic crack is expected in the positive segregation areas where the tensile strain is present. The morphology of this crack depends mainly on the kind, degree and pattern of macrosegregation.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)

Nyckelord

Alloys

Aluminum

Aluminum alloys

Aluminum metallography

Aluminum metallurgy

Casting

Continuous casting

Crack detection

Crystallization

Forming

Functional electric stimulation

Light metals

Mathematical morphology

Metal analysis

Metal casting

Metals

Set theory

Solidification

Strain

(8 hydroxy quinoline) aluminum

Annual meetings

cast aluminum alloys

Cooling conditions

Cracking criteria

Dendritic solidification

Direct-chill (DC) casting

Heat flows

Macro segregation

Mathematical analyses

Segregation (beneficiation)

Technical sessions

Tensile strain

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