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使用PBF-LB/M AlSI10Mg合金通过KOBO挤出和随后的冷拉获得高强度线
P Snopiński1, A Appiah2, K Matus2
1Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18A Konarskiego Street, 44-100, Gliwice, Poland. przemyslaw.snopinski@polsl.pl.
Scientific reports
|August 23, 2025
概括
这项研究使用KOBO挤出和冷绘在增材制造的AlSi10Mg上制造了高强度合金线. 这种热力学工艺显著提高了先进应用的机械性能.
科学领域:
- 材料科学
- 金属工程
- 添加剂制造
背景情况:
- 粉床融合激光光束化 (PBF-LB/M) 可实现复杂的AlSi10Mg合金组件.
- 增材制造的金属往往需要后处理才能达到所需的机械性能.
- 开发PBF-LB/M原料的高强度电线具有独特的挑战.
研究的目的:
- 对PBF-LB/M AlSi10Mg合金进行多阶段热力学加工的研究.
- 提高AlSi10Mg的机械性能,特别是拉力强度,用于制造线材.
- 描述处理过程中的微观结构演变.
主要方法:
- 使用KOBO挤出,然后在PBF-LB/M AlSi10Mg上进行冷抽.
- 使用扫描电子显微镜 (SEM),电子反射衍射 (EBSD) 和传输电子显微镜 (TEM) 进行微观结构分析.
- 进行拉伸试验以评估机械性能.
主要成果:
- 在KOBO挤出过程中,微观结构被精制成具有碎片Si粒子的细粒度矩阵,产生324MPa的UTS和10%的延长.
- 随后的冷导致显著的应变硬化和谷物精炼 (平均700nm).
- 达到401MPa的最终UTS,延长率降低到0.6%.
结论:
- 联合的KOBO挤出和冷拉工艺是生产高强度AlSi10Mg线的有效方法.
- 这种热力学路径为增材制造材料提供了可行的途径.
- 该研究展示了一种方法,可以显著提高PBF-LB/M AlSi10Mg合金的抗拉强度.
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