Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase

I. J. Kim; D. H. Bae; D. H. Kim

doi:10.1016/S0921-5093(03)00352-6

Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase

I. J. Kim, D. H. Bae, D. H. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

80 Citations (Scopus)

Abstract

The precipitation behavior under various heat treatment conditions in the as-cast and hot-rolled Mg-Zn-Y alloy has been investigated. While MgZn₂ precipitates are distributed in the α-Mg matrix at 190°C, in the temperature range of 350-420°C, polygon-shaped icosahedral phase (I-phase) precipitates are mainly formed. The precipitated I-phase is mostly found to be localized near the eutectic region in the as-cast ingot, but it is randomly distributed throughout the refined α-Mg grains formed by dynamic recrystallization during the hot-rolling processes in the sheet. The I-phase precipitates have no specific orientation relationship with the α-Mg matrix and do not coarsen at high temperatures. An increase of the hardness value by I-phase precipitates is less significant than that by MgZn₂ precipitates due to their relatively low number density and near-spherical morphology.

Original language	English
Pages (from-to)	313-318
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	359
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(03)00352-6
Publication status	Published - 2003 Oct 25

Bibliographical note

Funding Information:
This work is supported by Creative Research Initiatives of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/S0921-5093(03)00352-6

Cite this

@article{e6913fe4fcd3484b9474fb596e775c16,

title = "Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase",

abstract = "The precipitation behavior under various heat treatment conditions in the as-cast and hot-rolled Mg-Zn-Y alloy has been investigated. While MgZn2 precipitates are distributed in the α-Mg matrix at 190°C, in the temperature range of 350-420°C, polygon-shaped icosahedral phase (I-phase) precipitates are mainly formed. The precipitated I-phase is mostly found to be localized near the eutectic region in the as-cast ingot, but it is randomly distributed throughout the refined α-Mg grains formed by dynamic recrystallization during the hot-rolling processes in the sheet. The I-phase precipitates have no specific orientation relationship with the α-Mg matrix and do not coarsen at high temperatures. An increase of the hardness value by I-phase precipitates is less significant than that by MgZn2 precipitates due to their relatively low number density and near-spherical morphology.",

author = "Kim, {I. J.} and Bae, {D. H.} and Kim, {D. H.}",

note = "Funding Information: This work is supported by Creative Research Initiatives of the Korean Ministry of Science and Technology. ",

year = "2003",

month = oct,

day = "25",

doi = "10.1016/S0921-5093(03)00352-6",

language = "English",

volume = "359",

pages = "313--318",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase

AU - Kim, I. J.

AU - Bae, D. H.

AU - Kim, D. H.

N1 - Funding Information: This work is supported by Creative Research Initiatives of the Korean Ministry of Science and Technology.

PY - 2003/10/25

Y1 - 2003/10/25

N2 - The precipitation behavior under various heat treatment conditions in the as-cast and hot-rolled Mg-Zn-Y alloy has been investigated. While MgZn2 precipitates are distributed in the α-Mg matrix at 190°C, in the temperature range of 350-420°C, polygon-shaped icosahedral phase (I-phase) precipitates are mainly formed. The precipitated I-phase is mostly found to be localized near the eutectic region in the as-cast ingot, but it is randomly distributed throughout the refined α-Mg grains formed by dynamic recrystallization during the hot-rolling processes in the sheet. The I-phase precipitates have no specific orientation relationship with the α-Mg matrix and do not coarsen at high temperatures. An increase of the hardness value by I-phase precipitates is less significant than that by MgZn2 precipitates due to their relatively low number density and near-spherical morphology.

AB - The precipitation behavior under various heat treatment conditions in the as-cast and hot-rolled Mg-Zn-Y alloy has been investigated. While MgZn2 precipitates are distributed in the α-Mg matrix at 190°C, in the temperature range of 350-420°C, polygon-shaped icosahedral phase (I-phase) precipitates are mainly formed. The precipitated I-phase is mostly found to be localized near the eutectic region in the as-cast ingot, but it is randomly distributed throughout the refined α-Mg grains formed by dynamic recrystallization during the hot-rolling processes in the sheet. The I-phase precipitates have no specific orientation relationship with the α-Mg matrix and do not coarsen at high temperatures. An increase of the hardness value by I-phase precipitates is less significant than that by MgZn2 precipitates due to their relatively low number density and near-spherical morphology.

UR - http://www.scopus.com/inward/record.url?scp=0042326287&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0042326287&partnerID=8YFLogxK

U2 - 10.1016/S0921-5093(03)00352-6

DO - 10.1016/S0921-5093(03)00352-6

M3 - Article

AN - SCOPUS:0042326287

SN - 0921-5093

VL - 359

SP - 313

EP - 318

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Precipitates in a Mg-Zn-Y alloy reinforced by an icosahedral quasicrystalline phase

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this