Mechanical Properties and Microstructural Evolution of AA۵۰۸۳/Al۲O۳ Composites Fabricated by Warm Accumulative Roll Bonding
Publish place: International Journal of Advanced Design and Manufacturing Technology، Vol: 9، Issue: 4
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ADMTL-9-4_003
تاریخ نمایه سازی: 18 اردیبهشت 1400
Abstract:
In this study, warm accumulative roll bonding (Warm- ARB) process has been used to produce Metal Matrix Composite (MMC: AA۵۰۸۳/-۵% Al۲O۳). Starting materials were roll bonded as alternate layers up to ۵ rolling cycles with ۳۰۰°C preheating for five minutes before each cycle. The microstructure and mechanical properties of composites have been studied after different Warm- ARB cycles by tensile test, Vickers micro hardness test and scanning electron microscopy (SEM). The results revealed that during higher Warm- ARB cycles, breaking the layers of alumina particles led to the generation of elongated dense clusters with smaller sizes. This microstructural evolution led to improvement in the hardness, strength and elongation during the Warm- ARB process. The results demonstrated that the dispersed alumina clusters improved both the strength and tensile toughness of thecomposites. Finally, Warm- ARB process allowed producing metal particle reinforced with high uniformity, good mechanical properties and high bonding strength.
Keywords:
Fractography , Mechanical Properties , Metal-Matrix composites (MMCs) , Particle-Reinforced composites , Warm accumulative roll bonding
Authors
Mohammad Heydari Vini
Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
M. Sedighi
Iran University of Science and Technology
Mehdi Mondali
Department of Mechanical and Aerospace Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
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