Comparison of dynamic mechanical properties of non-superheated and superheated A357 alloys Article Swipe

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Mazlee Mohd Noor , J. B. Shamsul , Hussin Kamarudin ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.4149/km_2010_3_185

The influence of superheat treatment on the microstructure and dynamic mechanical properties of A357 alloys has been investigated. The study of microstructure was performed by the optical microscope. Dynamic mechanical properties (storage modulus, loss modulus, and damping capacity) were measured by the dynamic mechanical analyzer (DMA). Microstructure showed coarser and angular eutectic Si particles with larger {\alpha}-Al dendrites in the non-superheated A357 alloy. In contrast, finer and rounded eutectic Si particles together with smaller and preferred oriented {\alpha}-Al dendrites have been observed in the superheated A357 alloy. Dynamic mechanical properties showed an increasing trend of loss modulus and damping capacity meanwhile a decreasing trend of storage modulus at elevated temperatures for superheated and non-superheated A357 alloys. The high damping capacity of superheated A357 has been ascribed to the grain boundary damping at elevated temperatures.

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Eutectic system Materials science Superheating Microstructure Dynamic mechanical analysis Damping capacity Alloy Dynamic modulus Modulus Metallurgy Composite material Thermodynamics Physics Polymer

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Type: article
Language: en
Landing Page: https://doi.org/10.4149/km_2010_3_185
PDF: http://www.elis.sk/download_file.php?product_id=1964&session_id=8s7d752ot1pm47ieh9s0o0i0m3
OA Status: diamond
Cited By: 6
Related Works: 10
OpenAlex ID: https://openalex.org/W2610636774

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DOI: https://doi.org/10.4149/km_2010_3_185

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Title: Comparison of dynamic mechanical properties of non-superheated and superheated A357 alloys

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Type: article

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Language: en

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Publication year: 2021

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Publication date: 2021-01-01

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Authors: Mazlee Mohd Noor, J. B. Shamsul, Hussin Kamarudin

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Landing page: https://doi.org/10.4149/km_2010_3_185

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PDF URL: https://www.elis.sk/download_file.php?product_id=1964&session_id=8s7d752ot1pm47ieh9s0o0i0m3

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Concepts: Eutectic system, Materials science, Superheating, Microstructure, Dynamic mechanical analysis, Damping capacity, Alloy, Dynamic modulus, Modulus, Metallurgy, Composite material, Thermodynamics, Physics, Polymer

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Cited by: 6

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