Effect of Green Body Formation by Single and Double Action Pressing on the Mechanical Properties of Al Foams

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 192

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شناسه ملی سند علمی:

JR_IJMF-9-1_002

تاریخ نمایه سازی: 8 اسفند 1400

چکیده مقاله:

In the present study, aluminum foams with a relative density of ۰.۳۸ were fabricated through powder metallurgy route by using carbamides as space holders. The effect of using double and single action die pressing methods to produce green compacts, were studied on the mechanical and energy absorption capacity of the fabricated foams. Carbamide space holders were removed by being leached in water, whereafter the samples were sintered at ۶۴۰oC for ۲ hours in air. Mechanical properties and energy absorption capability of the fabricated foam samples were evaluated by the means of compression test. The results proved that double action die pressing method can significantly improve mechanical properties and energy absorption capacity of the fabricated foam by creating more uniform density distribution in foam structure. Therefore, for foams with a relative density of ۰.۳۸, using double action die pressing process caused nearly ۹۵ % increase in plateau stress and more than ۲۴% improvement in energy absorption ability for the fabricated foam.

کلیدواژه ها:

Al foam ، Powder metallurgy ، Single action die pressing ، Double action die pressing ، Carbamide ، Energy absorption ، Die pressing ، Space holder

نویسندگان

Fateme Hassanli

Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran

Mohammad Hossein Paydar

Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran

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