Formation mechanism and three-point bending behaviour of directly fabricated aluminium foam plates

New-style smooth-faced aluminium foam plates (AFPs) covered by dense skins have been fabricated directly. AFPs with porosity ranging from 79.3 to 85.2% and with an average diameter of 2.3 to 2.7 mm are obtained via the melt foaming method. The formation mechanism of external dense skins is studied. The dense skin is composed of a cell wall of non-ruptured bubbles, a coarse region formed from ruptured bubbles and plateau borders. The fracture mechanism of AFPs is studied based on static three-point bending tests. They show that the cracked region is only observed at the centre of the experimental samples and that brittle fracture is the main fracture mechanism of these AFPs.

[1]  E. Zhao,et al.  Formation mechanism and three-point bending behaviour of directly fabricated aluminium foam plates , 2017 .

[2]  Yan Liu,et al.  Compressive properties of Al-Si-SiC composite foams at elevated temperatures , 2016 .

[3]  Mehdi Shahedi Asl,et al.  Characteristics of dynamically formed oxide films in aluminum–calcium foamable alloys , 2016 .

[4]  Weimin Zhao,et al.  Fabrication and characterization of closed-cell aluminum foams with different contents of multi-walled carbon nanotubes , 2015 .

[5]  Oliver M. Strbik,et al.  Syntactic foam core metal matrix sandwich composite under bending conditions , 2015 .

[6]  I. Orbulov,et al.  Quasi-static and high strain rate response of aluminum matrix syntactic foams under compression , 2015 .

[7]  A. Rack,et al.  Stabilisation of aluminium foams and films by the joint action of dispersed particles and oxide films , 2015 .

[8]  I. Orbulov,et al.  Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres , 2015 .

[9]  Yu-tong Zhou,et al.  Oxide film on bubble surface of aluminum foams produced by gas injection foaming process , 2015 .

[10]  A. Rabiei,et al.  Ballistic performance of composite metal foams , 2015 .

[11]  Ľ. Orovčík,et al.  Effect of the TiH2 pre-treatment on the energy absorption ability of 6061 aluminium alloy foam , 2015 .

[12]  J. Banhart,et al.  Sub-mm sized bubbles injected into metallic melts , 2015 .

[13]  A. Rabiei,et al.  High strain rate behavior of composite metal foams , 2015 .

[14]  M. Bourham,et al.  Neutrons attenuation on composite metal foams and hybrid open-cell Al foam , 2015 .

[15]  Vincenzo Crupi,et al.  Prediction model for the impact response of glass fibre reinforced aluminium foam sandwiches , 2015 .

[16]  Hong Ye,et al.  An experimental study on mid-high temperature effective thermal conductivity of the closed-cell aluminum foam , 2015 .

[17]  T. Fiedler,et al.  Mechanical properties of aluminium foam derived from infiltration casting of salt dough , 2014 .

[18]  Xing Ma,et al.  Three-point bending behavior of aluminum foam sandwich with steel panel , 2013 .

[19]  H. Shahverdi,et al.  Investigating viscosity variations of molten aluminum by calcium addition and stirring , 2013 .

[20]  S. Škapin,et al.  Scanning electron microscopy, X-ray diffraction and thermal analysis study of the TiH2 foaming agent , 2012 .

[21]  L. Geng,et al.  Preparation and characterization of SiCp/2024Al composite foams by powder metallurgy , 2012 .

[22]  X. Jiao,et al.  Fabrication of Flexible α-Alumina Fibers Composed of Nanosheets , 2012 .

[23]  K. Tang,et al.  Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration , 2012 .

[24]  P. Švec,et al.  Stabilizing intermetallic phases within aluminum foam , 2011 .

[25]  S. N. Sahu,et al.  Foaming characteristics of Al–Si–Mg (LM25) alloy prepared by liquid metal processing , 2010 .

[26]  A. Daoud.  Compressive response and energy absorption of foamed A359-Al2O3 particle composites , 2009 .

[27]  H. Liu,et al.  Numerical simulation of bubble size distribution of aluminium foams in liquid state , 2009 .

[28]  F. Han,et al.  Novel technology for improving damping capacity of aluminium foam by interface layer , 2008 .

[29]  A. Rabiei,et al.  Composite metal foams processed through powder metallurgy , 2008 .

[30]  Patrick Onck,et al.  Failure mechanisms of closed-cell aluminum foam under monotonic and cyclic loading , 2006 .

[31]  S. K. Wong,et al.  In situ surface displacement analysis of fracture and fatigue behaviour under bending conditions of sandwich beam consisting of aluminium foam core and metallic face sheets , 2006 .

[32]  Marco Peroni,et al.  The Mechanical Behaviour of Aluminium Foam Structures in Different Loading Conditions , 2006 .

[33]  H. Stone,et al.  Foam drainage on the microscale I. Modeling flow through single Plateau borders. , 2004, Journal of Colloid and Interface Science.

[34]  John Banhart,et al.  Process Control in Aluminum Foam Production Using Real‐Time X‐ray Radioscopy , 2002 .

[35]  J. Banhart.  Manufacture, characterisation and application of cellular metals and metal foams , 2001 .