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Effects of particle size,bimodality and heat treatment on mechanical properties of pumice reinforced aluminum syntactic foams produced by cold chamber die casting

引用

China Foundry 2021年第6期18卷 529-540页

作者： Cagin Bolat Ismail Cem Akgun Ali Goksenli Faculty of Mechanical Engineering Istanbul Technical University34437IstanbulTurkey

In recent years,metal matrix syntactic foams(MMsFs)have become highly attractive owing to their unique physical,microstructural and mechanical *** to their promising potential for different industrial areas like automotive,aviation,and defense,these advanced engineering materials can also be evaluated as serious alternatives to particle reinforced metallic composites and conventional metallic *** from previously reported laboratory scaled techniques in the literature,this experimental effort focuses on the feasibility of MMsF manufacturing via a fully automated and industrial-based cold chamber die casting ***,1-2 mm,2-4 mm,and bimodal(50vol.%)natural-based pumice filled aluminum syntactic foams were manufactured utilizing a purpose-made casting ***,macroscopic,and microscopic examinations show that all of the fabricated samples display perfect matrix/filler *** density levels of fabricated syntactic foams range between 1.50 and 1.80 g·cm^(-3) depending upon the pumice particles size *** assess mechanical responses,quasi-static compression tests were ***,half of the foam samples were subjected to heat treatment to explore possible influences of aging on the compressive features and damage *** indicate that although the heat treatment enhances the compressive strength,plateau stress,and energy absorption properties of the fabricated foams,it changes damage mode of the samples by causing brittle dominant deformation.

关键词： pumice cold chamber die casting syntactic foam bimodality damage characteristic

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