Gubicza, Jenő and Nam, N. H. and Balogh, L. and Hellmig, R. J. and Stolyarov, V. V. and Estrin, Y. and Ungár, Tamás (2004) Microstructure of severely deformed metals determined by X-ray peak profile analysis. In: 9th International Symposium on Physics of Materials, 2003. szeptember 1-4., Prága, Csehország.
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Two essentially different metals, fcc copper and hexagonal titanium, were deformed by equal channel angular pressing (ECAP) up to eight passes. The microstructure developed as a result of severe plastic deformation (SPD) was studied by X-ray peak profile analysis. The formation of submicron grain sized structures was studied as a function of the number of ECAP passes. Thermal stability of the microstructure in both copper and titanium was examined by differential scanning calorimetry (DSC). During the isothermal heat-treatment of copper a bi-modal microstructure was formed, as manifested in a special shape of the peak profiles. In titanium, a considerable fraction of dislocations gets annihilated at temperatures well below the exothermic peak in the DSC curve.
|Item Type:||Conference or Workshop Item (Paper)|
|Subjects:||Q Science / természettudomány > QC Physics / fizika|
|Depositing User:||Erika Bilicsi|
|Date Deposited:||12 Oct 2012 07:17|
|Last Modified:||12 Oct 2012 07:17|
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