NDLI: Interfacial reaction in (Mg-37.5Al)/(Mg-6.7Nd) diffusion couples

Content Provider	Springer Nature Link
Author	Dai, Jiahong Shen, Shijun Jiang, Bin Zhang, Jianyue Yang, Qingshan Jiang, Zhongtao Dong, Hanwu Pan, Fusheng
Copyright Year	2016
Abstract	The solid-state diffusion reaction between Mg-37.5Al and Mg-6.7Nd was studied in the 623-673 K temperature range. A solid-liquid contact method was employed to produce diffusion couples. The Al$_{4}$Nd, Al$_{11}$Nd$_{3}$, Al$_{3}$Nd and Al$_{2}$Nd intermetallic compounds form in the diffusion reaction layers of the couples. The formation of intermetallic compounds in the diffusion reaction layers is rationalized using the Miedema model. The local average compositions through the diffusion reaction layer were determined, and used to construct a semi-quantitative diffusion path on the isothermal Mg-Al-Nd ternary phase diagram at 673 K. The growth constants of the entire diffusion reaction layers were determined as 8.91 (±0.94)×10$^{-14}$ m$^{2}$/s, 1.39 (±0.15)×10$^{-13}$ m$^{2}$/s and 1.93 (±0.38)×10$^{-13}$ m$^{2}$/s at 623 K, 648 K and 673 K, respectively. The activation energy Q for the growth of the entire diffusion reaction layers was 54±4.6 kJ/mol.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISSN	15989623
Journal	Metals and Materials
Volume Number	22
Issue Number	1
e-ISSN	20054149
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	2016-01-08
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	magnesium diffusion intermetallics interfaces scanning electron microscopy (SEM) Metallic Materials Operating Procedures, Materials Treatment Magnetism, Magnetic Materials Engineering Thermodynamics, Heat and Mass Transfer Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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