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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Influences of different prior heat treatments on the microstructural and mechanical properties of Cu-Fe filamentary composites
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Influences of different prior heat treatments on the microstructural and mechanical properties of Cu-Fe filamentary composites

机译：先前不同热处理方法对铜铁丝复合材料微观组织和力学性能的影响

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摘要

Cu-6 wt.% Fe and Cu-12 wt.% Fe filamentary composites were prepared by casting and cold drawing. And a different heat treatment of quenching and aging or homogenizing was introduced before cold drawing process, respectively. The microstructure was observed and the tensile strength measured for the composites at different drawing strains. The quenching and aging or homogenizing prior to drawing deformation refine the as-cast microstructure and result in the increase in interface density in the drawn microstructure. The drawn alloys with the homogenizing treatment show smaller filament spacing than those with the quenching and aging treatment because homogenizing results in smaller and more dispersive primary Fe dendrites before drawing deformation. The heat treatments can improve the strength of the composites by increasing precipitation strengthening and interface strengthening levels. With the reduction in filament spacing during drawing deformation, the strength of the alloys with smaller initial size of Fe dendrites increases more obviously.
机译：通过铸造和冷拔制备Cu-6重量％的Fe和Cu-12重量％的Fe丝状复合材料。并在冷拔过程之前分别引入了不同的淬火，时效或均质热处理。在不同的拉伸应变下观察复合材料的微观结构并测量其拉伸强度。拉深变形之前的淬火和时效处理或均质化改善了铸态微观结构，并导致拉深微观结构的界面密度增加。经过均质化处理的合金比经淬火和时效处理的合金具有更小的丝间距，因为均质化会导致拉伸变形之前较小的，更分散的一次铁枝晶。热处理可以通过增加沉淀强化和界面强化水平来提高复合材料的强度。随着拉拔变形过程中细丝间距的减小，Fe树枝晶初始尺寸较小的合金的强度更加明显。

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