Effect of oxide particles on the stabilization and final microstructure in aluminium

Highlights • Al samples with incorporated alumina particles were prepared using SPD. • A grain size reduction by a factor over ten is achieved. • Accompanied with grain size reduction, the hardness increased. • The samples exhibit excellent thermal stability for pure aluminium.

[1]  Peter Gumbsch,et al.  Dislocation sources and the flow stress of polycrystalline thin metal films , 2003 .

[2]  E. Dreizin,et al.  Effect of polymorphic phase transformations in Al2O3 film on oxidation kinetics of aluminum powders , 2005 .

[3]  D. Tabor.  Hardness of Metals , 1937, Nature.

[4]  S. Kang,et al.  Mechanical behavior and microstructural evolution upon annealing of the accumulative roll-bonding (ARB) processed Al alloy 1100 , 2008 .

[5]  N. Hansen,et al.  Hall–Petch relation and boundary strengthening , 2004 .

[6]  H. D. Manesh,et al.  Microstructure and mechanical properties of ultra-fine grains (UFGs) aluminum strips produced by ARB process , 2009 .

[7]  R. Pippan,et al.  The Limits of Refinement by Severe Plastic Deformation , 2006 .

[8]  E. .. Mittemeijer,et al.  Structure and morphology of aluminium-oxide films formed by thermal oxidation of aluminium , 2002 .

[9]  Ramnath Venkatraman,et al.  Separation of film thickness and grain boundary strengthening effects in Al thin films on Si , 1992 .

[10]  Y. L. Liu,et al.  Fine scale structures from deformation of aluminium containing small alumina particles , 2002 .

[11]  K. Kurzydłowski,et al.  Thermal stability of a nanostructured aluminium alloy , 2005 .

[12]  Reinhard Pippan,et al.  Saturation of Fragmentation During Severe Plastic Deformation , 2010 .

[13]  R. Valiev,et al.  Bulk nanostructured materials from severe plastic deformation , 2000 .

[14]  R. Denoyel,et al.  Influence of particles size on thermal properties of aluminium powder , 2007 .

[15]  E. Hall,et al.  The Deformation and Ageing of Mild Steel: III Discussion of Results , 1951 .

[16]  Claire Y. Barlow,et al.  Multilayer roll bonded aluminium foil: processing, microstructure and flow stress , 2004 .

[17]  Terence G. Langdon,et al.  Using high-pressure torsion for metal processing: Fundamentals and applications , 2008 .

[18]  N. Hansen,et al.  The Effect of Grain Size and Strain on the Tensile Flow Stress of Aluminium at Room Temperature , 1977 .

[19]  R. Pippan,et al.  New procedure to generate stable nanocrystallites by severe plastic deformation , 2009 .

[20]  N. Hansen.  Dispersion strengthening of aluminium-aluminium-oxide products , 1970 .

[21]  R. Valiev,et al.  Principles of equal-channel angular pressing as a processing tool for grain refinement , 2006 .

[22]  R. Pippan,et al.  Rate Independent and Rate Dependent Structural Evolution during Severe Plastic Deformation , 2010 .