A comparative study on the microstructural evolution in AM60 alloy processed by ECAP and MDF

A. Heczel, F. Akbaripanah, M. A. Salevati, R. Mahmudi, Vida, J. Gubicza

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Extruded AM60 Mg alloy samples were processed by two different severe plastic deformation (SPD) techniques, equal-channel angular pressing (ECAP) and multi-directional forging (MDF) at 220 °C for 2, 4 and 6 passes. The evolutions of the microstructure during ECAP and MDF were compared. It was found that although the main trends were similar for the two processing methods, the changes in the microstructure were more pronounced for ECAP. This effect was explained by the higher imposed strain and the different loading conditions applied during ECAP, which resulted in a much larger dislocation density and precipitate fraction for 2 passes compared to MDF. Between 2 and 6 passes, the dislocation density decreased, while the diffraction domain size increased due to recovery/recrystallization. The present study demonstrates that for the two SPD-processing methods the microstructural evolutions do not coincide either as a function of the number of passes or the equivalent strain.

Original languageEnglish
Pages (from-to)629-637
Number of pages9
JournalJournal of Alloys and Compounds
Volume763
DOIs
Publication statusPublished - Sep 30 2018

Fingerprint

Equal channel angular pressing
Microstructural evolution
Forging
Plastic deformation
Microstructure
Processing
Precipitates
Diffraction
Recovery

Keywords

  • Dislocations and disclinations (C)
  • Metals and alloys (A)
  • Microstructure (C)
  • Scanning electron microscopy
  • SEM (D)
  • X-ray diffraction (D)

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

A comparative study on the microstructural evolution in AM60 alloy processed by ECAP and MDF. / Heczel, A.; Akbaripanah, F.; Salevati, M. A.; Mahmudi, R.; Vida, ; Gubicza, J.

In: Journal of Alloys and Compounds, Vol. 763, 30.09.2018, p. 629-637.

Research output: Contribution to journalArticle

Heczel, A. ; Akbaripanah, F. ; Salevati, M. A. ; Mahmudi, R. ; Vida, ; Gubicza, J. / A comparative study on the microstructural evolution in AM60 alloy processed by ECAP and MDF. In: Journal of Alloys and Compounds. 2018 ; Vol. 763. pp. 629-637.
@article{408e00bb7bcc495a90359eec079fa68e,
title = "A comparative study on the microstructural evolution in AM60 alloy processed by ECAP and MDF",
abstract = "Extruded AM60 Mg alloy samples were processed by two different severe plastic deformation (SPD) techniques, equal-channel angular pressing (ECAP) and multi-directional forging (MDF) at 220 °C for 2, 4 and 6 passes. The evolutions of the microstructure during ECAP and MDF were compared. It was found that although the main trends were similar for the two processing methods, the changes in the microstructure were more pronounced for ECAP. This effect was explained by the higher imposed strain and the different loading conditions applied during ECAP, which resulted in a much larger dislocation density and precipitate fraction for 2 passes compared to MDF. Between 2 and 6 passes, the dislocation density decreased, while the diffraction domain size increased due to recovery/recrystallization. The present study demonstrates that for the two SPD-processing methods the microstructural evolutions do not coincide either as a function of the number of passes or the equivalent strain.",
keywords = "Dislocations and disclinations (C), Metals and alloys (A), Microstructure (C), Scanning electron microscopy, SEM (D), X-ray diffraction (D)",
author = "A. Heczel and F. Akbaripanah and Salevati, {M. A.} and R. Mahmudi and Vida and J. Gubicza",
year = "2018",
month = "9",
day = "30",
doi = "10.1016/j.jallcom.2018.06.002",
language = "English",
volume = "763",
pages = "629--637",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - A comparative study on the microstructural evolution in AM60 alloy processed by ECAP and MDF

AU - Heczel, A.

AU - Akbaripanah, F.

AU - Salevati, M. A.

AU - Mahmudi, R.

AU - Vida,

AU - Gubicza, J.

PY - 2018/9/30

Y1 - 2018/9/30

N2 - Extruded AM60 Mg alloy samples were processed by two different severe plastic deformation (SPD) techniques, equal-channel angular pressing (ECAP) and multi-directional forging (MDF) at 220 °C for 2, 4 and 6 passes. The evolutions of the microstructure during ECAP and MDF were compared. It was found that although the main trends were similar for the two processing methods, the changes in the microstructure were more pronounced for ECAP. This effect was explained by the higher imposed strain and the different loading conditions applied during ECAP, which resulted in a much larger dislocation density and precipitate fraction for 2 passes compared to MDF. Between 2 and 6 passes, the dislocation density decreased, while the diffraction domain size increased due to recovery/recrystallization. The present study demonstrates that for the two SPD-processing methods the microstructural evolutions do not coincide either as a function of the number of passes or the equivalent strain.

AB - Extruded AM60 Mg alloy samples were processed by two different severe plastic deformation (SPD) techniques, equal-channel angular pressing (ECAP) and multi-directional forging (MDF) at 220 °C for 2, 4 and 6 passes. The evolutions of the microstructure during ECAP and MDF were compared. It was found that although the main trends were similar for the two processing methods, the changes in the microstructure were more pronounced for ECAP. This effect was explained by the higher imposed strain and the different loading conditions applied during ECAP, which resulted in a much larger dislocation density and precipitate fraction for 2 passes compared to MDF. Between 2 and 6 passes, the dislocation density decreased, while the diffraction domain size increased due to recovery/recrystallization. The present study demonstrates that for the two SPD-processing methods the microstructural evolutions do not coincide either as a function of the number of passes or the equivalent strain.

KW - Dislocations and disclinations (C)

KW - Metals and alloys (A)

KW - Microstructure (C)

KW - Scanning electron microscopy

KW - SEM (D)

KW - X-ray diffraction (D)

UR - http://www.scopus.com/inward/record.url?scp=85048152181&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048152181&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2018.06.002

DO - 10.1016/j.jallcom.2018.06.002

M3 - Article

VL - 763

SP - 629

EP - 637

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -