Hot deformation mechanisms in AZ31 Magnesium Alloy Extruded at different temperatures: Impact of Texture

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Hot deformation mechanisms in AZ31 Magnesium Alloy Extruded at different temperatures: Impact of Texture. / Rao, Kamineni Pitcheswara; Prasad, Yellapregada Venkata Rama Krishna; Dzwonczyk, Joanna et al.
in: Metals, Jahrgang 2, Nr. 3, 01.09.2012, S. 292-312.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Rao KP, Prasad YVRK, Dzwonczyk J, Hort N, Kainer KU. Hot deformation mechanisms in AZ31 Magnesium Alloy Extruded at different temperatures: Impact of Texture. Metals. 2012 Sep 1;2(3):292-312. doi: 10.3390/met2030292

Bibtex

@article{88c74cda6c5843b2bfaa9a32c983c8a1,
title = "Hot deformation mechanisms in AZ31 Magnesium Alloy Extruded at different temperatures: Impact of Texture",
abstract = "The hot deformation characteristics of AZ31 magnesium alloy rod extruded at temperatures of 300 °C, 350 °C and 450 °C have been studied in compression. The extruded material had a fiber texture with < 10 1 0 > parallel to the extrusion axis. When extruded at 450 °C, the texture was less intense and the < 10 1 0 > direction moved away from the extrusion axis. The processing maps for the material extruded at 300 °C and 350 °C are qualitatively similar to the material with near-random texture (cast-homogenized) and exhibited three dynamic recrystallization (DRX) domains. In domains #1 and #2, prismatic slip is the dominant process and DRX is controlled by lattice self-diffusion and grain boundary self-diffusion, respectively. In domain #3, pyramidal slip occurs extensively and DRX is controlled by cross-slip on pyramidal slip systems. The material extruded at 450 °C exhibited two domains similar to #1 and #2 above, which moved to higher temperatures, but domain #3 is absent. The results are interpreted in terms of the changes in < 10 1 0 > fiber texture with extrusion temperature. Highly intense < 10 1 0 > texture, as in the rod extruded at 350 °C, will enhance the occurrence of prismatic slip in domains #1 and #2 and promotes pyramidal slip at temperatures >450 °C (domain #3).",
keywords = "AZ31 magnesium alloy, Extrusion temperature, Fiber texture, Kinetic analysis, Processing maps, Engineering",
author = "Rao, {Kamineni Pitcheswara} and Prasad, {Yellapregada Venkata Rama Krishna} and Joanna Dzwonczyk and Norbert Hort and Kainer, {Karl Ulrich}",
year = "2012",
month = sep,
day = "1",
doi = "10.3390/met2030292",
language = "English",
volume = "2",
pages = "292--312",
journal = "Metals",
issn = "2075-4701",
publisher = "MDPI AG",
number = "3",

}

RIS

TY - JOUR

T1 - Hot deformation mechanisms in AZ31 Magnesium Alloy Extruded at different temperatures

T2 - Impact of Texture

AU - Rao, Kamineni Pitcheswara

AU - Prasad, Yellapregada Venkata Rama Krishna

AU - Dzwonczyk, Joanna

AU - Hort, Norbert

AU - Kainer, Karl Ulrich

PY - 2012/9/1

Y1 - 2012/9/1

N2 - The hot deformation characteristics of AZ31 magnesium alloy rod extruded at temperatures of 300 °C, 350 °C and 450 °C have been studied in compression. The extruded material had a fiber texture with < 10 1 0 > parallel to the extrusion axis. When extruded at 450 °C, the texture was less intense and the < 10 1 0 > direction moved away from the extrusion axis. The processing maps for the material extruded at 300 °C and 350 °C are qualitatively similar to the material with near-random texture (cast-homogenized) and exhibited three dynamic recrystallization (DRX) domains. In domains #1 and #2, prismatic slip is the dominant process and DRX is controlled by lattice self-diffusion and grain boundary self-diffusion, respectively. In domain #3, pyramidal slip occurs extensively and DRX is controlled by cross-slip on pyramidal slip systems. The material extruded at 450 °C exhibited two domains similar to #1 and #2 above, which moved to higher temperatures, but domain #3 is absent. The results are interpreted in terms of the changes in < 10 1 0 > fiber texture with extrusion temperature. Highly intense < 10 1 0 > texture, as in the rod extruded at 350 °C, will enhance the occurrence of prismatic slip in domains #1 and #2 and promotes pyramidal slip at temperatures >450 °C (domain #3).

AB - The hot deformation characteristics of AZ31 magnesium alloy rod extruded at temperatures of 300 °C, 350 °C and 450 °C have been studied in compression. The extruded material had a fiber texture with < 10 1 0 > parallel to the extrusion axis. When extruded at 450 °C, the texture was less intense and the < 10 1 0 > direction moved away from the extrusion axis. The processing maps for the material extruded at 300 °C and 350 °C are qualitatively similar to the material with near-random texture (cast-homogenized) and exhibited three dynamic recrystallization (DRX) domains. In domains #1 and #2, prismatic slip is the dominant process and DRX is controlled by lattice self-diffusion and grain boundary self-diffusion, respectively. In domain #3, pyramidal slip occurs extensively and DRX is controlled by cross-slip on pyramidal slip systems. The material extruded at 450 °C exhibited two domains similar to #1 and #2 above, which moved to higher temperatures, but domain #3 is absent. The results are interpreted in terms of the changes in < 10 1 0 > fiber texture with extrusion temperature. Highly intense < 10 1 0 > texture, as in the rod extruded at 350 °C, will enhance the occurrence of prismatic slip in domains #1 and #2 and promotes pyramidal slip at temperatures >450 °C (domain #3).

KW - AZ31 magnesium alloy

KW - Extrusion temperature

KW - Fiber texture

KW - Kinetic analysis

KW - Processing maps

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84969388177&partnerID=8YFLogxK

U2 - 10.3390/met2030292

DO - 10.3390/met2030292

M3 - Journal articles

AN - SCOPUS:84969388177

VL - 2

SP - 292

EP - 312

JO - Metals

JF - Metals

SN - 2075-4701

IS - 3

ER -

DOI