Interconnection of Zn content, macrosegregation, dendritic growth, nature of intermetallics and hardness in directionally solidified Mg-Zn alloys
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- 作者：Nathalia C. Verissimoa ; Crystopher Britoa ; Washington L.R. Santosa ; Noé ; Cheunga ; José ; E. Spinellib ; Amauri Garciaa ; amaurig@fem.unicamp.br" class="auth_mail" title="E-mail the corresponding author
- 关键词：Mg-Zn alloys ; Solidification ; Segregation ; Microstructure ; Dendrites ; Hardness
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：25 March 2016
- 年：2016
- 卷：662
- 期：Complete
- 页码：1-10
- 全文大小：2814 K
文摘
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The primary dendrite spacing of Mg–Zn alloys is correlated with solidification thermal parameters.
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Zn segregation along the directionally solidified castings induced two growth regimes.
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The Mg-rich matrix is formed by equiaxed grains of sixfold branched dendrites.
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Functional equations relating primary dendrite arm spacing to hardness are proposed.
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Hardness is shown to increase with the increase in the alloy Zn content.