由人工智能增强的无形启发的65.1Co28.2Cr5.3Mo网格的元结构
Seong Je Park1, Woongbeom Heogh2, Jeongho Yang3
1School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798 Singapore.
Advanced composites and hybrid materials
|December 11, 2024
概括
研究人员添加制造了一种--- (CoCrMo) 合金网格,其结构以无形体为灵感. 这种新型晶格表现出高特异性压缩强度,通过热处理和纳米纤维形成来增强,用于先进的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
- 生物材料工程 生物材料工程
背景情况:
- 增材制造使复杂的格子结构具有量身定制的特性.
- ---合金 (CoCrMo) 由于其优良的机械性能和耐腐蚀性,在生物医学和工业应用中广泛使用.
- 控制微观结构和相分布对于优化增材制造合金的性能至关重要.
研究的目的:
- 为了研究CoCrMo合金网格的增材制造,该网格具有无形灵感结构.
- 分析结构-属性关系,包括特定的压缩强度和微观结构演变.
- 探索后加工技术,以提高先进应用的机械性能和表面特性.
主要方法:
- 激光粉床融合 (LPBF) 用于制造具有受控化距离和周期性/非周期性安排的CoCrMo格子.
- 人工智能 (AI) 用于格子对齐和设计优化.
- 进行了微结构特征 (平轴与柱状颗粒) 和机械测试 (压缩强度).
- 应用了固体溶液热处理和电化学液,以实现相位均化和表面修饰 (纳米).
主要成果:
- 增材制造的CoCrMo网格呈现出一种无形灵感的结构,具有高特异性压缩强度,接近固体结构的结构.
- 微结构分析显示异质相分布 (等轴节点,柱状支架),影响强度.
- 固体溶液热处理导致同质相,显著提高了特定的压缩强度.
- 电化学水产生了纳米,增加了表面积,并使应力消散成为可能.
结论:
- 有控制结构的CoCrMo格子的增材制造为高性能材料提供了途径.
- 微观结构和相同质性是最大限度地提高这些格子的机械强度的关键因素.
- 通过纳米微粒形成的表面修饰为先进的功能设计提供了机会,例如改进的门.
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