Interdiffusion behaviors and mechanical properties of Zn–Cr system

Diffusion couple technique has been utilized to study the interdiffusional behaviors of Zn–Cr system. Two intermetallic compounds (Zn13Cr, Zn17Cr) have been found in the diffusion zone between 598 K and 653 K. For the existence of Zn13Cr phase, the incremental diffusion couple has been used to confi...

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Published inCalphad Vol. 74; p. 102308
Main Authors Zhuang, Rongjie, Tan, Yongkang, Liu, Ya, Tao, Xiaoma, Chen, Hongmei, Ouyang, Yifang, Du, Yong
Format Journal Article
LanguageEnglish
Published Elmsford Elsevier Ltd 01.09.2021
Elsevier BV
Subjects
Diffusion
Diffusion coefficient
Diffusion couple
Interdiffusion
Intermetallic compounds
Mechanical properties
Modulus of elasticity
Nanoindentation
Thickness
Zn–Cr
Zn–Cr
Mechanical properties
Diffusion coefficient
Diffusion couple
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Summary:Diffusion couple technique has been utilized to study the interdiffusional behaviors of Zn–Cr system. Two intermetallic compounds (Zn13Cr, Zn17Cr) have been found in the diffusion zone between 598 K and 653 K. For the existence of Zn13Cr phase, the incremental diffusion couple has been used to confirm, and the results show that the Zn13Cr phase can be determined in the present work. However, the thickness of Zn13Cr is very thinner than that of Zn17Cr, which indicate the growth of Zn13Cr is very slow. The thickness of Zn17Cr satisfied the parabolic growth law. EPMA was used to obtain the composition profiles and the interdiffusion coefficients of Zn13Cr, Zn17Cr and Zn (hcp) have been extracted by forward simulation analysis embedded in ‘Pydiffusion’ code. The mechanical properties of Zn17Cr were also determined by nanoindentation technique, and the hardness and Young's modulus of Zn17Cr is 3.01 GPa and 165.78 GPa, respectively.
ISSN:0364-5916
1873-2984
DOI:10.1016/j.calphad.2021.102308