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Interdiffusion in Ternary Magnesium Solid Solutions of Aluminum and Zinc

Journal Article · · Journal of Phase Equilibria and Diffusion
 [1];  [2];  [3];  [1]
  1. Univ. of Central Florida, Orlando, FL (United States). Dept. of Materials Science and Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Measurement Science and Systems Engineering Division

Al and Zn are two of the most common alloying elements in commercial Mg alloys, which can improve the physical properties through solid solution strengthening and precipitation hardening. Diffusion plays a key role in the kinetics of these and other microstructural design relevant to Mg-alloy development. However, there is a lack of multicomponent diffusion data available for Mg alloys. Through solid-to-solid diffusion couples, diffusional interactions of Al and Zn in ternary Mg solid-solution at 400° and 450 °C were examined by an extension of the Boltzmann-Matano analysis based on Onsager s formalism. Concentration profiles of Mg-Al-Zn ternary alloys were determined by electron probe microanalysis, and analyzed to determine the ternary interdiffusion coefficients as a function of composition. Zn was determined to interdiffuse the fastest, followed by Mg and Al. Appreciable diffusional interactions among Mg, Al, and Zn were observed by variations in sign and magnitude of cross interdiffusion coefficients. In particular, Zn was found to significantly influence the interdiffusion of Mg and Al significantly: the and ternary cross interdiffusion coefficients were both negative, and large in magnitude, in comparison to and , respectively. Al and Mg were observed influence the interdiffusion of Mg and Al, respectively, with positive and interdiffusion coefficients, but their influence on the Zn interdiffusion was negligible.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE - Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1324051
Journal Information:
Journal of Phase Equilibria and Diffusion, Journal Name: Journal of Phase Equilibria and Diffusion Journal Issue: 1 Vol. 37; ISSN 1547-7037
Publisher:
ASM InternationalCopyright Statement
Country of Publication:
United States
Language:
English

References (35)

Al and Zn Impurity Diffusion in Binary and Ternary Magnesium Solid-Solutions book February 2014
Impurity Diffusion Coefficients of Al and Zn in Mg Determined from Solid-to-Solid Diffusion Couples book February 2014
Zur Integration der Diffusionsgleichung bei variabeln Diffusionscoefficienten journal January 1894
Methods for determination of effective diffusion coefficients in ternary alloys (i). Direct measurement of ternary diffusion matrix journal October 1985
Diffusion of 65 Zn in Mg and in Mg- x Al solid solutions journal August 2006
Zero-flux planes and flux reversals in Cu−Ni−Zn diffusion couples journal September 1979
Interdiffusion in the Mg-Al System and Intrinsic Diffusion in β-Mg2Al3 journal June 2012
Anisotropic Diffusion Behavior of Al in Mg: Diffusion Couple Study Using Mg Single Crystal journal February 2013
Aluminum Impurity Diffusion in Magnesium journal March 2012
Magnesium alloy applications in automotive structures journal November 2008
Heterodiffusion de Ag, Cd, In, Sn et Sb dans le magnesium journal January 1972
Diffusion of 65Zn in dilute AlZn, AlMg, AlZnMg and AlZnFe alloys journal May 1977
The measurement of diffusion coefficients in ternary systems journal July 1974
Diffusion in metals book January 2004
First-principles calculations of impurity diffusion coefficients in dilute Mg alloys using the 8-frequency model journal May 2011
Superior light metals by texture engineering: Optimized aluminum and magnesium alloys for automotive applications journal February 2013
Diffusional mobility for fcc phase of Al–Mg–Zn system and its applications journal September 2008
Investigation of anisotropic diffusion behavior of Zn in hcp Mg and interdiffusion coefficients of intermediate phases in the Mg–Zn system journal September 2013
Interdiffusion and impurity diffusion in polycrystalline Mg solid solution with Al or Zn journal December 2014
Magnesium casting technology for structural applications journal March 2013
Preface to the viewpoint set on: The current state of magnesium alloy science and technology journal October 2010
Grain boundary diffusion of Al in Mg journal June 2014
Quantitative Analysis with the Electron Microanalyzer. journal May 1963
Reciprocal Relations in Irreversible Processes. I. journal February 1931
Reciprocal Relations in Irreversible Processes. II. journal December 1931
Ab initio calculations of rare-earth diffusion in magnesium journal April 2012
Diffusion in Multicomponent Metallic Systems journal April 1957
Diffusion in Multicomponent Metallic Systems: i. Phenomenological Theory for Substitutional Solid Solution Alloys journal July 1958
On the atomic interdiffusion in Mg–{Ce, Nd, Zn} and Zn–{Ce, Nd} binary systems journal July 2014
Quaternary Diffusion in 7000 Aluminum Alloys journal January 2002
Interdiffusion in the Al–Mg System journal January 1972
Quaternary Diffusion in the α Solid Solutions of Al–Zn–Mg–Cu Alloys journal January 1999
Tracer Diffusion of Magnesium in Pseudo-Binary Al-Mg2Si Alloys journal January 1997
Interdiffusion between Aluminum and Al-Mg Alloys journal January 1997
Magnesium Alloy Development for Automotive Applications journal January 2012

Cited By (1)

High-Resolution Electron Microscopy and Kinetic Studies of Precipitation Hardening Reactions in Cast Al-5.8Zn-2.2Mg-2.5Cu journal July 2019

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