Formation of Supersaturated Solid Solutions in Al Alloys with Transition Metals Upon Shear under Pressure

I.G. Brodova; D.V. Bashlykov; I.G. Shirinkina; I.P. Lennikova

doi:10.4028/www.scientific.net/MSF.503-504.413

Paper Titles

Continuous Grain Refinement Using Severe Torsion Straining Process
p.385

Application of High Pressure Torsion to Bulk Samples
p.391

Specific Features of the Strengthening during Severe Plastic Deformation of Supersaturated Solid Solutions
p.399

Differences in Structural Evolution in Single- and Dual-Phase Materials during Severe Plastic Deformation
p.407

Formation of Supersaturated Solid Solutions in Al Alloys with Transition Metals Upon Shear under Pressure
p.413

Martensitic Transformation and Mechanical Behavior of TiNi Shape Memory Alloys after Severe Plastic Deformation
p.419

New Routes for Synthesizing Massive Nanocrystalline Materials
p.425

3D-Atom Probe Investigation of Vacancy Induced Interdiffusion during High Pressure Torsion Deformation
p.433

A New Deformation Mechanism in Nanoscale Fe-C Composite as a Result of a Stress-Induced α→γ Transformation
p.439

HomeMaterials Science ForumMaterials Science Forum Vols. 503-504Formation of Supersaturated Solid Solutions in Al...

Formation of Supersaturated Solid Solutions in Al Alloys with Transition Metals Upon Shear under Pressure

Abstract:

Metallographic, X-ray diffraction and electron microscopy were used to study the phase compositions and structure of rapidly solidified the Al- alloys transition metals (Zr, Fe, Cr) subjected to severe plastic deformation (SPD) by torsion under a high quasi-hydrostatic pressure. It was established that upon SPD a number and a size of aluminides decrease with increasing a degree of deformation. For example, the maximum effect of deformation - induced dissolution of the particles are observed in the case where they have a dendritic structure and are about one μm in size. Upon SPD the supersaturation of α-phase increases by a factor of 2.5. (for rapidly solidified Al-Cr and Al-Cr-Zr alloys) and by a factor of 10 (for rapidly solidified Al-Fe alloy). After SPD all alloys have submicrocrystalline (SMK) Al-based matrix with grain size of 100-200 nm and high hardness of 2 GPa. The thermal stability of SMK deformed materials and some specific features of post deformation phenomena as an aging and a recrystallization were investigated.