Nanomechanical properties of Mg–Al intermetallic compounds produced by packed powder diffusion coating (PPDC) on the surface of AZ91E

Chang, H. -W., Zhang, M. -X., Atrens, A. and Huang, H. (2014) Nanomechanical properties of Mg–Al intermetallic compounds produced by packed powder diffusion coating (PPDC) on the surface of AZ91E. Journal of Alloys and Compounds, 587 527-532. doi:10.1016/j.jallcom.2013.10.235

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Author Chang, H. -W.
Zhang, M. -X.
Atrens, A.
Huang, H.
Title Nanomechanical properties of Mg–Al intermetallic compounds produced by packed powder diffusion coating (PPDC) on the surface of AZ91E
Journal name Journal of Alloys and Compounds   Check publisher's open access policy
ISSN 0925-8388
1873-4669
Publication date 2014-02-25
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.jallcom.2013.10.235
Open Access Status
Volume 587
Start page 527
End page 532
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Formatted abstract
A packed powder diffusion coating (PPDC) treatment produced two intermetallic layers on the surface of the commercial magnesium alloy AZ91E. The β-phase (Mg17Al12) was immediately on top of the AZ91E, on top of which was the τ-phase (Mg32(Al,Zn)49). Nanoindentation showed that the elastic modulus and hardness of each of the intermetallic compounds was significantly greater than that of the AZ91E substrate. Staircase displacement bursts occurred during nanoindentation of the intermetallic compounds, attributed to the combination of incipient plasticity at low loads, and the development of dislocation networks due to dislocation pile ups around the indentation at higher loads. Crystallographic analysis of β phase orientations using EBSD showed that the nanomechanical properties of the intermetallic compound produced through PPDC treatment were isotropic.
Keyword Magnesium alloy
Intermetallic compound
Nanoindentation
Diffusion coating
EBSD
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 9 November 2013.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 26 Nov 2013, 11:00:35 EST by Professor Han Huang on behalf of School of Mechanical and Mining Engineering