Formation mechanism of in-situ nanostructured grain in cast Cu-10Sn-2Zn-1.5Fe-0.5Co (wt.%) alloy
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- 作者：Kaixuan Chena ; Xiaohua Chenb ; chenxh@skl.ustb.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Ding Dinga ; Guodong Shia ; Zidong Wanga ; wangzd@mater.ustb.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Casting ; Copper alloy ; Grain refinement ; Nanoparticle ; Nanostructured grain ; Mechanical property
- 刊名：Materials & Design
- 出版年：2016
- 出版时间：15 March 2016
- 年：2016
- 卷：94
- 期：Complete
- 页码：338-344
- 全文大小：1313 K
文摘
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Cast Cu-10Sn-2Zn-1.5Fe-0.5Co (wt.%) alloy with in-situ nanostructured grains (NG) achieved an enhancement in both the strength and ductility in contrast to virgin Cu–10Sn–2Zn (wt.%) alloy with coarse dendritic grains.
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Formation mechanism of NG structure in cast Cu-10Sn-2Zn-1.5Fe-0.5Co (wt.%) alloy is proposed.
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The mechanism involves in-situ generation of iron-rich nanoparticles in the melt and the nanoparticle-matrix interactions during solidification interpreted by nanoparticle encapsulation model.
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A potential pathway is proposed for fabricating bulk nanostructured alloys with favorable NG structure to realize exciting properties.