Title of article
High hardness in a nanocrystalline Mg97Y2Zn1 alloy
Author/Authors
Youssef، نويسنده , , K.M. and Wang، نويسنده , , Y.B. and Liao، نويسنده , , X.Z. and Mathaudhu، نويسنده , , S.N. and Kecskés، نويسنده , , L.J. and Zhu، نويسنده , , Y.T. and Koch، نويسنده , , C.C.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
6
From page
7494
To page
7499
Abstract
A nanocrystalline Mg97Y2Zn1 alloy was prepared with an average grain size of 21 nm 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 8 h at room temperature was 2.1 GPa. After compaction and annealing at 573 K, the average grain size slightly increases to 28 nm with an increase in hardness to 2.4 GPa. 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.
Keywords
Nanocrystalline , Magnesium alloys , Mechanical alloying , hardness
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2011
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2164734
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