Effect of undercooling on particle size distribution in phase separated Cu75Co25−xMx (M = Ni, Fe) alloys with low M content
Effect of undercooling on particle size distribution in phase separated Cu75Co25−xMx (M = Ni, Fe) alloys with low M content
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DOI：
10.1016/j.jallcom.2014.01.182
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发表时间：
2014-05
影响因子：
6.2
通讯作者：
Yikun Zhang;Z. Wu;Meimei Wang;Chao Yang;G. Wilde
中科院分区：
文献类型：
--
作者：
Yikun Zhang;Z. Wu;Meimei Wang;Chao Yang;G. Wilde
研究了不同过冷度Cu75Co25XMX(M=−，Fe)相分离合金的显微组织和富钴颗粒尺寸分布。Ni的加入抑制了过冷Cu-Co合金的相分离行为，而Fe的加入促进了相分离行为。随着过冷度的增加，PSD由双峰分布向多峰分布转变，第一峰位置逐渐向更大半径移动，半峰全宽变宽，说明过冷度对富钴粒子的扩散生长有重要影响。添加少量的Ni/Fe元素对相分离的Cu-Co合金的PSD的影响与改变过冷度的效果相似。
The microstructure and Co-rich particle size distribution (PSD) in phase separated Cu75Co25−xMx(M = Ni, Fe) alloys with various undercoolings have been investigated. The Ni addition suppresses and the Fe addition promotes the phase separation behavior in undercooled Cu–Co alloys. With increasing undercooling, the PSD changes from a bimodal to multimodal size distribution, the first peak position shifts to a larger radius gradually and its full width of half maximum becomes wider, which illustrates the undercooling has an important effect on diffusive growth of the Co-rich particles. Small amount of Ni/Fe elemental addition has a similar effect on PSD to that of alter undercooling in phase separated Cu–Co alloy.