平等通道角压对爆炸接Al-Cu双金属板的微观结构和机械性能的影响
Krzysztof Żaba1, Kinga Ortyl1, Ondřej Hilšer2
1Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Faculty of Non-Ferrous Metals, AGH University of Krakow, al. Adama Mickiewicza 30, 30-059 Cracow, Poland.
Materials (Basel, Switzerland)
|November 27, 2025
概括
平等通道角压缩 (ECAP) 完善了爆炸性接的Al/Cu双金属板的微结构并提高了机械性能. 通过ECAP处理,可以显著提高整个材料的硬度均性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是一种金工业.
背景情况:
- 爆炸性接从不相似的材料中产生大面积的双金属板.
- 严重的塑性变形 (SPD) 通过颗粒精炼和增加位移密度来提高机械强度.
研究的目的:
- 为了研究等通道角压缩 (ECAP) 对爆炸性接Al/Cu (EN AW-1050/Cu-ETP) 双金属板的微观结构和机械性能的影响.
- 分析ECAP处理参数 (包括样品的方向和旋转) 对材料特性的影响.
主要方法:
- 在室温下以等通道角压力 (ECAP) 进行1-3次通过,模角为90°.
- 静态拉力测试,维克尔硬度测试 (4.9N负载) 和微结构分析 (SEM,EDS).
- 评估ECAP模具内的各种样品切割方向和位置,包括通过之间的180°旋转.
主要成果:
- 每次通过ECAP处理,Al/Cu界面过渡层的形态会发生显著的变化.
- 样品切割方向没有影响硬度,但ECAP导致硬度分布与基材相比更加均.
- 在ECAP模具通道内Al/Cu层的方向影响了硬度分布特征.
结论:
- ECAP是一种有效的方法来修改爆炸性接Al/Cu双金属板的微观结构和机械性能.
- 该研究强调了ECAP加工参数在实现所需材料特性和均硬度分布方面的重要性.
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