Dynamic Recrystallization During High-Strain-Rate Tension of Copper

• Discontinuous dynamic recrystallization can occur during dynamic tensile extrusion of copper, which is subjected to uniaxial tensile strains of ~5 and strain rates up to 10^6 s^-1 in the extruded section. Through high-resolution transmission Kikuchi diffraction, we show that nucleation occurs through subgrain rotation and grain boundary bulging at boundaries between and oriented grains. The observed nuclei consist of subgrains with a size of approximately 200 to 400 nm.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Annan teknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Other Engineering and Technologies (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Annan materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Other Materials Engineering (hsv//eng)

Nyckelord

Discontinuous dynamic recrystallization

Subgrain rotation

Dynamic recrystallization

Strain

High strain rates

Uniaxial tensile strain

High resolution

Dynamic tensile extrusions

Recrystallization (metallurgy)

Subgrains

Copper

Grain boundaries

Tensile strength

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art (ämneskategori)

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