Effects of Al addition on the structure and mechanical properties of Zn alloys

Liu, Zhilin, Li, Riqing, Jiang, Ripeng, Li, Xiaoqian and Zhang, Mingxing (2016) Effects of Al addition on the structure and mechanical properties of Zn alloys. Journal of Alloys and Compounds, 687 885-892. doi:10.1016/j.jallcom.2016.06.196

Author Liu, Zhilin
Li, Riqing
Jiang, Ripeng
Li, Xiaoqian
Zhang, Mingxing
Title Effects of Al addition on the structure and mechanical properties of Zn alloys
Journal name Journal of Alloys and Compounds   Check publisher's open access policy
ISSN 0925-8388
Publication date 2016-12-05
Sub-type Article (original research)
DOI 10.1016/j.jallcom.2016.06.196
Open Access Status Not yet assessed
Volume 687
Start page 885
End page 892
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Subject 2211 Mechanics of Materials
2210 Mechanical Engineering
2506 Metals and Alloys
2505 Materials Chemistry
Abstract The noticeable improvement of hardness, elongation and yield stress in the cast zinc alloys was achieved using aluminium inoculation. Through varying the addition level of this eutectic-forming solute (aluminium), the mechanism of such property improvement of cast Zn alloys was investigated. The increase of hardness, elongation and yield stress was very sensitive to the aluminium content due to grain-refinement and solid-solution strengthening. Beyond the maximum solubility of aluminium in zinc, a three-dimensional eutectic network was developed to form a “eutectic-skeleton”, which produced further reinforcement in yield stress and elongation, but only marginal enhancement in hardness. These improved mechanical properties are found to be closely associated with significant microstructural refinement. The microstructural refinement, i.e. the columnar-to-equiaxed transition and the reduction in grain sizes, was mainly elucidated in terms of the Interdependence theory.
Keyword Grain refinement
Interdependence theory
Mechanical properties
Zn-Al alloys
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 51475480
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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