Solidification studies of 6xxx alloys with different Mg and Si contents

• Directional solidification studies, simulating billet casting, have been made off alloys with balanced and not balanced Mg and Si additions, and with different alloying levels ranging from 6063 to 6082. The effects of growth rate, grain refinement, temperature gradient and composition on structure formation have been investigated. Increased alloy content strongly influence the solidification structure, but during cooling the coarsening process decrease the differences, and relatively similar structures are obtained at room temperature. Segregation to the surface zone is proposed to have an effect on surface defect formation.

Ämnesord

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

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

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering (hsv//eng)

Nyckelord

aluminum; AA 6000 alloys

directional solidification

microstructure coarsening

surface defects

Metallurgical process and manufacturing engineering

Metallurgisk process- och produktionsteknik

Engineering mechanics

Publikations- och innehållstyp

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