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基于脱合金反应制备富Nb相增强非晶复合材料的微观组织与力学性能

材料科学与工程

基于脱合金反应制备富Nb相增强非晶复合材料的微观组织与力学性能

梦媛
书林
树森
中国有色金属学报第34卷, 第11期pp.3634-3642纸质出版 2024-11-28
6600

本文采用传统电弧熔炼与金属熔体脱合金法两种手段成功制备了富Nb相增强锆基非晶复合材料,并系统比较了上述两种方法制备获得的样品的微观组织和力学性能。结果表明:基于电弧熔炼与熔体脱合金工艺均可获得富Nb相增强非晶复合结构,无杂质析出相生成,样品热学特征值相近。但是,利用金属熔体脱合金反应制备获得的非晶复合组织中富Nb相尺寸更小,综合力学性能相比于传统电弧熔化法更加优异。因此,形变过程中富Nb相可有效阻碍基体中主剪切带的迅速扩展,促进剪切带增殖,形成多重剪切带。同时,富Nb相本身塑性变形也可进一步降低其界面应力水平,提高材料的强韧性。

非晶复合材料脱合金反应微观组织强韧性
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