High hardness in a nanocrystalline Mg97Y2Zn1 alloy

K. M. Youssef; Y. B. Wang; X. Z. Liao; S. N. Mathaudhu; L. J. Kecskés; Y. T. Zhu; C. C. Koch

doi:10.1016/j.msea.2011.06.017

High hardness in a nanocrystalline Mg₉₇Y₂Zn₁ alloy

K. M. Youssef, Y. B. Wang, X. Z. Liao, S. N. Mathaudhu, L. J. Kecskés, Y. T. Zhu, C. C. Koch^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

17 Citations (Scopus)

Abstract

A nanocrystalline Mg₉₇Y₂Zn₁ alloy was prepared with an average grain size of 21nm by mechanical alloying of elemental powders. The structure of the alloy was characterized by X-ray diffraction and transmission electron microscopy. The hardness of the alloy as-milled for 8h at room temperature was 2.1GPa. After compaction and annealing at 573K, the average grain size slightly increases to 28nm with an increase in hardness to 2.4GPa. These are the highest values for hardness yet reported for a crystalline Mg-based (>95% Mg) alloy. Possible factors leading to this high strength are discussed. © 2011 Elsevier B.V.

Original language	English
Pages (from-to)	7494-7499
Journal	Materials Science and Engineering A
Volume	528
Issue number	25-26
Online published	14 Jun 2011
DOIs	https://doi.org/10.1016/j.msea.2011.06.017
Publication status	Published - 25 Sept 2011
Externally published	Yes

Research Keywords

Magnesium alloys, Mechanical alloying, Hardness
Nanocrystalline

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title = "High hardness in a nanocrystalline Mg97Y2Zn1 alloy",

abstract = "A nanocrystalline Mg97Y2Zn1 alloy was prepared with an average grain size of 21nm by mechanical alloying of elemental powders. The structure of the alloy was characterized by X-ray diffraction and transmission electron microscopy. The hardness of the alloy as-milled for 8h at room temperature was 2.1GPa. After compaction and annealing at 573K, the average grain size slightly increases to 28nm with an increase in hardness to 2.4GPa. These are the highest values for hardness yet reported for a crystalline Mg-based (>95% Mg) alloy. Possible factors leading to this high strength are discussed. {\textcopyright} 2011 Elsevier B.V.",

keywords = "Magnesium alloys, Mechanical alloying, Hardness, Nanocrystalline, Magnesium alloys, Mechanical alloying, Hardness, Nanocrystalline, Magnesium alloys, Mechanical alloying, Hardness, Nanocrystalline",

author = "Youssef, {K. M.} and Wang, {Y. B.} and Liao, {X. Z.} and Mathaudhu, {S. N.} and Kecsk{\'e}s, {L. J.} and Zhu, {Y. T.} and Koch, {C. C.}",

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doi = "10.1016/j.msea.2011.06.017",

language = "English",

volume = "528",

pages = "7494--7499",

journal = "Materials Science and Engineering A",

issn = "0921-5093",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - High hardness in a nanocrystalline Mg97Y2Zn1 alloy

AU - Youssef, K. M.

AU - Wang, Y. B.

AU - Liao, X. Z.

AU - Mathaudhu, S. N.

AU - Kecskés, L. J.

AU - Zhu, Y. T.

AU - Koch, C. C.

PY - 2011/9/25

Y1 - 2011/9/25

N2 - A nanocrystalline Mg97Y2Zn1 alloy was prepared with an average grain size of 21nm by mechanical alloying of elemental powders. The structure of the alloy was characterized by X-ray diffraction and transmission electron microscopy. The hardness of the alloy as-milled for 8h at room temperature was 2.1GPa. After compaction and annealing at 573K, the average grain size slightly increases to 28nm with an increase in hardness to 2.4GPa. These are the highest values for hardness yet reported for a crystalline Mg-based (>95% Mg) alloy. Possible factors leading to this high strength are discussed. © 2011 Elsevier B.V.

AB - A nanocrystalline Mg97Y2Zn1 alloy was prepared with an average grain size of 21nm by mechanical alloying of elemental powders. The structure of the alloy was characterized by X-ray diffraction and transmission electron microscopy. The hardness of the alloy as-milled for 8h at room temperature was 2.1GPa. After compaction and annealing at 573K, the average grain size slightly increases to 28nm with an increase in hardness to 2.4GPa. These are the highest values for hardness yet reported for a crystalline Mg-based (>95% Mg) alloy. Possible factors leading to this high strength are discussed. © 2011 Elsevier B.V.

KW - Magnesium alloys, Mechanical alloying, Hardness

KW - Nanocrystalline

KW - Magnesium alloys, Mechanical alloying, Hardness

KW - Nanocrystalline

KW - Magnesium alloys, Mechanical alloying, Hardness

KW - Nanocrystalline

UR - http://www.scopus.com/inward/record.url?scp=79961169748&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-79961169748&origin=recordpage

U2 - 10.1016/j.msea.2011.06.017

DO - 10.1016/j.msea.2011.06.017

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 528

SP - 7494

EP - 7499

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - 25-26

ER -

High hardness in a nanocrystalline Mg₉₇Y₂Zn₁ alloy

Abstract

Research Keywords

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