Characterization of Microstructure Inhomogeneity in UFG Copper after Static Annealing and Creep Exposure

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Microstructure Inhomogeneity in UFG Copper after Static Annealing and Creep Exposure

Popis výsledku v původním jazyce

Experiments were conducted to evaluate an effect of static annealing and creep on homogeneity of microstructure in pure Cu processed by equal-channel angular pressing (ECAP) at room temperature. The experimental material used in this investigation was acoarse-grained copper having the mean grain size 1.2 mm in its received state. The billets were processed by ECAP using a die that had an internal angle of 90° between the two parts of the channel and an outer arc of curvature of 20°, where these two parts intersect. It can be shown from first principles that these angles lead to an imposed strain of 1 in each passage of the sample through the die [1]. The ECAP pressing was performed by route Bc up to 8 passes. The microstructure after 2 and 8 ECAP passes was annealed at from 373 to 573 K for 5 min, 10 and 100 h. Constant load creep tests in tension were conducted at 373, 473 and 573 K under different applied stresses. Microstructure of samples was characterized by scanning electron mic

Název v anglickém jazyce

Characterization of Microstructure Inhomogeneity in UFG Copper after Static Annealing and Creep Exposure

Popis výsledku anglicky

Experiments were conducted to evaluate an effect of static annealing and creep on homogeneity of microstructure in pure Cu processed by equal-channel angular pressing (ECAP) at room temperature. The experimental material used in this investigation was acoarse-grained copper having the mean grain size 1.2 mm in its received state. The billets were processed by ECAP using a die that had an internal angle of 90° between the two parts of the channel and an outer arc of curvature of 20°, where these two parts intersect. It can be shown from first principles that these angles lead to an imposed strain of 1 in each passage of the sample through the die [1]. The ECAP pressing was performed by route Bc up to 8 passes. The microstructure after 2 and 8 ECAP passes was annealed at from 373 to 573 K for 5 min, 10 and 100 h. Constant load creep tests in tension were conducted at 373, 473 and 573 K under different applied stresses. Microstructure of samples was characterized by scanning electron mic

Druh

O - Ostatní výsledky

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů