Post SPD Material's Recovery in Thermal Exposition

• Authors: T. Kvačkaj , A. Kováčová , R. Kočiško
• Languages of publication: EN

Abstracts

EN

The mechanical and thermo-physical properties of Cu-Cr-Zr alloys in dependence on processing conditions were studied. The processing conditions consisted of solution annealing at temperature of 1020°C for 60 min followed by water quenching. This was followed by one equal channel angular pressing pass carried out at ambient temperature, ageing treatment (T_{AT}∈ (20;480⟩°C, t_{AT}∈ ⟨30;150⟩ min) and cooling in water. The maximal strengthening effect coming from dislocations & grain size refinement & precipitation strengthening of ΔHV0.1=130 was achieved at T_{AT}=480°C and for t_{AT}=120 min. From differential scanning calorimetry analysis, two partial exothermal peaks were recognized and classified as major and minor, these peaks are used to determination the stored energy coming from recrystallization and precipitation (ΔH_R and ΔH_P). The maximal value in stored energy of H_{1×ECAP}=2.923 J/g was obtained after 1st ECAP pass.

Keywords

EN

81.05.Bx; 81.07.-b; 81.20.Hy; 81.40.Cd

Discipline

• 81.07.-b: Nanoscale materials and structures: fabrication and characterization(for structure of nanoscale materials, see 61.46.-w; for nanostructured materials in electrochemistry, see 82.45.Yz; see also 62.23.-c Structural classes of nanoscale systems in mechanical properties of condensed matter)
• 81.40.Cd: Solid solution hardening, precipitation hardening, and dispersion hardening; aging(see also 64.75.Nx Phase separation and segregation in solid solutions)
• 81.05.Bx: Metals, semimetals, and alloys
• 81.20.Hy: Forming; molding, extrusion, etc.[see also, 83.50.Uv Material processing (extension, molding, etc.)]

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 689-692

Dates

published

2015-10

Contributors

author

T. Kvačkaj

• Technical University of Košice, Faculty of Metallurgy, Department of Metal Forming, Letná 9, 042 00 Košice, Slovakia

author

A. Kováčová

• Technical University of Košice, Faculty of Metallurgy, Department of Metal Forming, Letná 9, 042 00 Košice, Slovakia

author

R. Kočiško

• Technical University of Košice, Faculty of Metallurgy, Department of Metal Forming, Letná 9, 042 00 Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.128.689