Structural characteristics of β1′ precipitates in Mg-Zn-based alloys

Alok Singh; Ampo Sai

doi:10.1016/j.scriptamat.2007.07.028

Structural characteristics of β₁^′ precipitates in Mg-Zn-based alloys

Alok Singh, Ampo Sai

Center for Exploration of New Inorganic Materials

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

82 Citations (Scopus)

Abstract

β₁^′ precipitates in an Mg₉₇Zn_2.5Y_0.5 alloy are shown to have a complex domain structure based on the structure of monoclinic Mg₄Zn₇ phase. All domains are oriented with [0 1 0]∥[0 0 0 1]_Mg and one of the four planar matches with the matrix. Two of these orientations are related to two others by twinning on the (0 0 1) plane of the Mg₄Zn₇ phase. These orientations are brought about by crystallographic constraints from the matrix. An ordering of the domains creates a new structure.

Original language	English
Pages (from-to)	941-944
Number of pages	4
Journal	Scripta Materialia
Volume	57
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2007.07.028
Publication status	Published - 2007 Nov 1

Keywords

Domain structure
Electron diffraction
Magnesium alloys
Precipitation
Transmission electron microscopy (TEM)

ASJC Scopus subject areas

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

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abstract = "β1′ precipitates in an Mg97Zn2.5Y0.5 alloy are shown to have a complex domain structure based on the structure of monoclinic Mg4Zn7 phase. All domains are oriented with [0 1 0]∥[0 0 0 1]Mg and one of the four planar matches with the matrix. Two of these orientations are related to two others by twinning on the (0 0 1) plane of the Mg4Zn7 phase. These orientations are brought about by crystallographic constraints from the matrix. An ordering of the domains creates a new structure.",

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AU - Sai, Ampo

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KW - Magnesium alloys

KW - Precipitation

KW - Transmission electron microscopy (TEM)

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