Microstructure and tensile properties of Mg-3Al-1Zn sheets produced by hot-roller-cold-material rolling

D. Liu, M. Z. Bian, S. M. Zhu, W. Z. Chen, Z. Y. Liu, E. D. Wang, J. F. Nie

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Mg-3Al-1Zn (AZ31) alloy sheets with various thickness reductions from 10% to 60% were fabricated in a single pass at 150 °C by hot-roller-cold-material rolling. The rolled sheets were then evaluated by microstructural characterization and tensile testing. The strength shows an increase with increasing thickness reduction from 10% to 40%, but the further increase in thickness reduction leads to a decrease in strength. Yield strengths of 273 MPa along the rolling direction and 357 MPa along the transverse direction are obtained for the sheet with 40% thickness reduction, which is characterized by highly elongated grains and high density dislocations, together with a few ultrafine, recrystallized grains in microstructure. The variation in strength with thickness reduction is discussed in light of the strengthening contributions from grain size and dislocation density.

Original languageEnglish
Pages (from-to)304-310
Number of pages7
JournalMaterials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume706
DOIs
Publication statusPublished - 26 Oct 2017

Keywords

  • Hall-Petch relation
  • Magnesium alloys
  • Recrystallization
  • Rolling
  • Sheet
  • Work hardening

Cite this

@article{66029341efd741d880f1507a77f7e4c1,
title = "Microstructure and tensile properties of Mg-3Al-1Zn sheets produced by hot-roller-cold-material rolling",
abstract = "Mg-3Al-1Zn (AZ31) alloy sheets with various thickness reductions from 10{\%} to 60{\%} were fabricated in a single pass at 150 °C by hot-roller-cold-material rolling. The rolled sheets were then evaluated by microstructural characterization and tensile testing. The strength shows an increase with increasing thickness reduction from 10{\%} to 40{\%}, but the further increase in thickness reduction leads to a decrease in strength. Yield strengths of 273 MPa along the rolling direction and 357 MPa along the transverse direction are obtained for the sheet with 40{\%} thickness reduction, which is characterized by highly elongated grains and high density dislocations, together with a few ultrafine, recrystallized grains in microstructure. The variation in strength with thickness reduction is discussed in light of the strengthening contributions from grain size and dislocation density.",
keywords = "Hall-Petch relation, Magnesium alloys, Recrystallization, Rolling, Sheet, Work hardening",
author = "D. Liu and Bian, {M. Z.} and Zhu, {S. M.} and Chen, {W. Z.} and Liu, {Z. Y.} and Wang, {E. D.} and Nie, {J. F.}",
year = "2017",
month = "10",
day = "26",
doi = "10.1016/j.msea.2017.09.018",
language = "English",
volume = "706",
pages = "304--310",
journal = "Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
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}

Microstructure and tensile properties of Mg-3Al-1Zn sheets produced by hot-roller-cold-material rolling. / Liu, D.; Bian, M. Z.; Zhu, S. M.; Chen, W. Z.; Liu, Z. Y.; Wang, E. D.; Nie, J. F.

In: Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, Vol. 706, 26.10.2017, p. 304-310.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Microstructure and tensile properties of Mg-3Al-1Zn sheets produced by hot-roller-cold-material rolling

AU - Liu, D.

AU - Bian, M. Z.

AU - Zhu, S. M.

AU - Chen, W. Z.

AU - Liu, Z. Y.

AU - Wang, E. D.

AU - Nie, J. F.

PY - 2017/10/26

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N2 - Mg-3Al-1Zn (AZ31) alloy sheets with various thickness reductions from 10% to 60% were fabricated in a single pass at 150 °C by hot-roller-cold-material rolling. The rolled sheets were then evaluated by microstructural characterization and tensile testing. The strength shows an increase with increasing thickness reduction from 10% to 40%, but the further increase in thickness reduction leads to a decrease in strength. Yield strengths of 273 MPa along the rolling direction and 357 MPa along the transverse direction are obtained for the sheet with 40% thickness reduction, which is characterized by highly elongated grains and high density dislocations, together with a few ultrafine, recrystallized grains in microstructure. The variation in strength with thickness reduction is discussed in light of the strengthening contributions from grain size and dislocation density.

AB - Mg-3Al-1Zn (AZ31) alloy sheets with various thickness reductions from 10% to 60% were fabricated in a single pass at 150 °C by hot-roller-cold-material rolling. The rolled sheets were then evaluated by microstructural characterization and tensile testing. The strength shows an increase with increasing thickness reduction from 10% to 40%, but the further increase in thickness reduction leads to a decrease in strength. Yield strengths of 273 MPa along the rolling direction and 357 MPa along the transverse direction are obtained for the sheet with 40% thickness reduction, which is characterized by highly elongated grains and high density dislocations, together with a few ultrafine, recrystallized grains in microstructure. The variation in strength with thickness reduction is discussed in light of the strengthening contributions from grain size and dislocation density.

KW - Hall-Petch relation

KW - Magnesium alloys

KW - Recrystallization

KW - Rolling

KW - Sheet

KW - Work hardening

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