Surface alloying of an Mg alloy subjected to surface mechanical attrition treatment

Sun, H. Q., Shi, Y. N., Zhang, M.-X. and Lu, K. (2008) Surface alloying of an Mg alloy subjected to surface mechanical attrition treatment. Surface and Coatings Technology, 202 16: 3947-3953. doi:10.1016/j.surfcoat.2008.02.010


Author Sun, H. Q.
Shi, Y. N.
Zhang, M.-X.
Lu, K.
Title Surface alloying of an Mg alloy subjected to surface mechanical attrition treatment
Journal name Surface and Coatings Technology   Check publisher's open access policy
ISSN 0257-8972
Publication date 2008-05-15
Sub-type Article (original research)
DOI 10.1016/j.surfcoat.2008.02.010
Volume 202
Issue 16
Start page 3947
End page 3953
Total pages 7
Editor A. Matthews
B. D. Sartwell
Place of publication Lausanne, Switzerland
Publisher Elsevier Sequoia
Language eng
Subject 291403 Alloy Materials
C1
091207 Metals and Alloy Materials
8612 Fabricated Metal Products
Formatted abstract
A 100 ~ not, vert, similar 200 μm thick Al-enriched surface alloyed layer was formed on an AZ91D Mg alloy subjected to surface mechanical attrition treatment and diffusion coating at temperature as low as 400 °C. Transmission electron microscopy observations indicated the formation of a large volume fraction of pearlite-like lamellar microstructure within the surface alloyed layer, which was identified to be Mg17Al12 precipitates (γ phase) in Mg solid solution matrix. The Al-enriched alloyed layer enhanced the wear resistance of the alloy in comparison with the un-treated AZ91D Mg alloy substrate under the same dry sliding wear condition. Examination of the worn surface indicated that the enhanced wear resistance of the alloyed layer was mainly attributed to the strengthening effect of γ phase.
© 2008 Elsevier B.V. All rights reserved.
Keyword Magnesium alloy
Surface alloying
Surface mechanical attrition treatment (SMAT)
Wear resistance
Q-Index Code C1
Q-Index Status Confirmed Code

 
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