Effect of microstructural refinement on tensile behavior of the AC9A aluminum alloy suffering thermal shock fatigue

Effect of microstructural refinement on tensile behavior of the AC9A aluminum alloy suffering thermal shock fatigue

This study investigated the tensile properties of spray-formed (SF) and ingot-cast (IC) high-Si aluminum alloys which suffered from cyclic heating/cooling. Due to the breakup of massive primary Si particles, the strength of the IC specimens descends gradually with an increasing number of thermal cyc...

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Veröffentlicht in:Scripta materialia 2004-12, Vol.51 (12), p.1159-1163
Hauptverfasser: Song, J.M., Lui, T.S., Kao, I.H., Chen, L.H., Lin, H.M.
Format: Artikel
Sprache:eng
Schlagworte:
Al–Si
Applied sciences
Exact sciences and technology
Metals. Metallurgy
Spray forming
Tensile properties
Thermal cycling
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Zusammenfassung:This study investigated the tensile properties of spray-formed (SF) and ingot-cast (IC) high-Si aluminum alloys which suffered from cyclic heating/cooling. Due to the breakup of massive primary Si particles, the strength of the IC specimens descends gradually with an increasing number of thermal cycles. The uniform and refined structure of the SF specimens displays ductile fracture pattern and retains a similar tensile behavior even after a great number of heating and water quenching.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2004.08.012