اثر مقدار عامل فوم‌ساز کربنات کلسیم بر ساختار فیزیکی و خواص مکانیکی فوم آلومینیومی LM13

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران

2 دانشیار، مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران

3 استادیار، مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران

چکیده

هدف این پژوهش بررسی اثر تغییرات مقدار عامل فوم­‌ساز کربنات کلسیم بر خواص فیزیکی و مکانیکی فوم آلومینیومی LM13 می‌باشد. فوم از جنس آلیاژ آلومینیوم LM13 با استفاده از عامل فوم­‌ساز کربنات کلسیم (CaCO3) و ذرات تثبیت کننده فلز کلسیم (Ca) با چگالی‌های از 3/0 تا 5/ 0 gr⁄cm3  (چگالی نسبی 12/0 تا 18/0) و اندازه حفره 25/0 تا 92/0 میلی‌متر تولید شده است. تأثیر میزان عامل فوم­‌ساز بر اندازه حفره­‌ها، کمترین ضخامت دیواره­‌ها و چگالی مورد ارزیابی قرار گرفته است. در ادامه رفتار مکانیکی فوم‌ها با استفاده از آزمون فشار تک محوری مورد بررسی قرار گرفته و تغییرات استحکام فشاری، ویژگی­‌های الاستیک و ظرفیت جذب انرژی فوم‌ها در اثر تغییرات مقدار عامل فوم‌ساز بررسی شده است. مطابق نتایج بدست آمده استفاده بیشتر از عامل فوم‌ساز منجر به تولید فوم‌هایی با اندازه میانگین حفره بزرگتر و چگالی کمتر می‌گردد. همچنین افزایش مقدار عامل فوم‌ساز سبب کاهش مقاومت فشاری فوم‌ها در آزمون فشار تک‌محوری و ظرفیت جذب انرژی آن‌ها می‌گردد.

کلیدواژه‌ها

عنوان مقاله [English]

The influence of the amount of CaCO3 foaming agent on the physical structure and mechanical properties of LM13 aluminum foam

نویسندگان [English]

  • Sadegh Soltani 1
  • Hamed Deilami Azodi 2
  • Seyed Hossein Elahi 3
1 Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
2 Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
3 Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
چکیده [English]

This paper aims to investigate the effect of the amount of calcium carbonate as foaming agent on the physical and mechanical properties of LM13 aluminum foam. Aluminum alloy LM13 foams have been made using calcium carbonate (CaCO3) as foaming agent and calcium metal (Ca) as stabilizing particles with densities from 0.3 to 0.5 gr/cm3 (relative density from 0.12 to 0.18) and the pores size from 0.25 to 0.92 mm. The effects of the amount of foaming agent on the size of the pores, the minimum thickness of the walls and the density have been evaluated. Furthermore, the mechanical behavior of foams has been investigated using uniaxial compression test. The influences of the amount of foaming agent on compressive strength, elastic characteristics and energy absorption capacity of foams have been investigated. According to the obtained results, the use of more foaming agent leads to the production of foams with larger average pores size and less density. Also, increasing the amount of foaming agent reduces the compressive strength of foams in the uniaxial compression test and their energy absorption capacity.

کلیدواژه‌ها [English]

  • Aluminum Foam
  • Foaming Agent
  • Compressive Strength
  • Energy Absorption capacity

مراجع

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مهندسی ساخت و تولید ایران
دوره 9، شماره 5
مرداد 1401
صفحه 33-39

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