Abstract
Discussion Forum (0)
Lightweight Silafont®-36 alloy containing minor iron has been developed for automotive applications due to its high tensile strength, long fatigue life, and superior ductility in the as-cast condition. The mechanical properties of this alloy are expected to vary with its temper conditions. T7 heat-treatment involving a long aging time after solution heat treatment (also known as over-aging) is one of the commonly used temper conditions to achieve stabilized aluminum alloys. This treatment helps decrease the susceptibility to stress corrosion cracking and increase the exfoliation resistance and thermal conductivity of some Al-Si-Cu alloys, despite accompanied moderate strength. The load-bearing structural application of such alloys inevitably involves strain-controlled cyclic deformation behavior. Although the information on some tensile properties of the alloy under study experienced T7 treatment has been reported, no studies on its low-cycle fatigue behavior can be found in the open literature. The objective of this study was to evaluate the cyclic deformation behavior of a high-pressure die-cast (HPDC) Silafont®-36 alloy in the T7 state in relation to its microstructures (including potential gas porosities and surface blisters generated during the HPDC and solution treatment) and clarify underlying deformation mechanism. Details on this study will be presented at the conference.
Lightweight Silafont®-36 alloy containing minor iron has been developed for automotive applications due to its high tensile strength, long fatigue life, and superior ductility in the as-cast condition. The mechanical properties of this alloy are expected to vary with its temper conditions. T7 heat-treatment involving a long aging time after solution heat treatment (also known as over-aging) is one of the commonly used temper conditions to achieve stabilized aluminum alloys. This treatment helps decrease the susceptibility to stress corrosion cracking and increase the exfoliation resistance and thermal conductivity of some Al-Si-Cu alloys, despite accompanied moderate strength. The load-bearing structural application of such alloys inevitably involves strain-controlled cyclic deformation behavior. Although the information on some tensile properties of the alloy under study experienced T7 treatment has been reported, no studies on its low-cycle fatigue behavior can be found in the open literature. The objective of this study was to evaluate the cyclic deformation behavior of a high-pressure die-cast (HPDC) Silafont®-36 alloy in the T7 state in relation to its microstructures (including potential gas porosities and surface blisters generated during the HPDC and solution treatment) and clarify underlying deformation mechanism. Details on this study will be presented at the conference.
Monotonic and Cyclic Deformation Behavior of a Silafont®-36 Cast Aluminum Alloy in an Overaged Condition
Disclosure(s): None
Mr. Soumya Sobhan Dash
Abstract
Discussion Forum (0)
Lightweight Silafont®-36 alloy containing minor iron has been developed for automotive applications due to its high tensile strength, long fatigue life, and superior ductility in the as-cast condition. The mechanical properties of this alloy are expected to vary with its temper conditions. T7 heat-treatment involving a long aging time after solution heat treatment (also known as over-aging) is one of the commonly used temper conditions to achieve stabilized aluminum alloys. This treatment helps decrease the susceptibility to stress corrosion cracking and increase the exfoliation resistance and thermal conductivity of some Al-Si-Cu alloys, despite accompanied moderate strength. The load-bearing structural application of such alloys inevitably involves strain-controlled cyclic deformation behavior. Although the information on some tensile properties of the alloy under study experienced T7 treatment has been reported, no studies on its low-cycle fatigue behavior can be found in the open literature. The objective of this study was to evaluate the cyclic deformation behavior of a high-pressure die-cast (HPDC) Silafont®-36 alloy in the T7 state in relation to its microstructures (including potential gas porosities and surface blisters generated during the HPDC and solution treatment) and clarify underlying deformation mechanism. Details on this study will be presented at the conference.
Lightweight Silafont®-36 alloy containing minor iron has been developed for automotive applications due to its high tensile strength, long fatigue life, and superior ductility in the as-cast condition. The mechanical properties of this alloy are expected to vary with its temper conditions. T7 heat-treatment involving a long aging time after solution heat treatment (also known as over-aging) is one of the commonly used temper conditions to achieve stabilized aluminum alloys. This treatment helps decrease the susceptibility to stress corrosion cracking and increase the exfoliation resistance and thermal conductivity of some Al-Si-Cu alloys, despite accompanied moderate strength. The load-bearing structural application of such alloys inevitably involves strain-controlled cyclic deformation behavior. Although the information on some tensile properties of the alloy under study experienced T7 treatment has been reported, no studies on its low-cycle fatigue behavior can be found in the open literature. The objective of this study was to evaluate the cyclic deformation behavior of a high-pressure die-cast (HPDC) Silafont®-36 alloy in the T7 state in relation to its microstructures (including potential gas porosities and surface blisters generated during the HPDC and solution treatment) and clarify underlying deformation mechanism. Details on this study will be presented at the conference.
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