Mv. Markushev et al., STRUCTURE AND PROPERTIES OF ULTRA-FINE GRAINED ALUMINUM-ALLOYS PRODUCED BY SEVERE PLASTIC-DEFORMATION, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 927-931
Methods of imparting ultra-fine grained (UFG) structure to conventiona
l aluminium alloys by thermomechanical treatment, including severe pla
stic deformation, are analysed. The effect of initial structure parame
ters, such as grain size and precipitates of secondary phases, on UFG
structure formation is discussed in terms of physical mechanisms. Ambi
ent temperature mechanical behavior of UFG alloys produced by several
methods is reported. The effect of grain refinement on static strength
and toughness is more pronounced in non-heat treatable alloys. Evolut
ion of UFG structure during post-deformation heat treatment and superp
lastic behavior of UFG alloys is shown. (C) 1997 Elsevier Science S.A.