Dispersion of soft Bi particles and grain refinement of matrix in an Al–Bi alloy by equal channel angular pressing
Dispersion of soft Bi particles and grain refinement of matrix in an Al–Bi alloy by equal channel angular pressing
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DOI：
10.1016/j.jallcom.2014.03.126
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发表时间：
2014-08
影响因子：
6.2
通讯作者：
M. Zha;Yanjun Li;R. Mathiesen;H. Roven
中科院分区：
文献类型：
--
作者：
M. Zha;Yanjun Li;R. Mathiesen;H. Roven
研究了含Al-8Bi超偏晶合金软颗粒在等通道角挤压过程中的变形行为。软铋颗粒的尺寸、形状和分布通过剪切、破碎、聚结和熟化得到显着改变。研究发现，软Bi颗粒通过颗粒刺激连续动态再结晶对促进Al晶粒细化有很大影响。目前的工作提供了一种获得具有良好分散的软相颗粒的偏晶铝合金的有效方法。
The deformation behavior of a soft particle containing Al–8Bi hypermonotectic alloy during equal-channel angular pressing was studied. The size, shape and distribution of soft Bi particles are substantially modified via shearing, fragmentation, coalescence and ripening. It is found that the soft Bi particles have a strong influence on promoting refinement of Al grains via particle stimulated continuous dynamic recrystallization. The present work provides an effective methodology to obtain monotectic aluminium alloys with well-dispersed soft phase particles.