In-situ Atomic-scale Deformation Mechanism of ultrafine Nanocrystalline Pt

超细纳米晶Pt的原位原子尺度变形机制

• 批准号: DE150101212
• 负责人: Dr Lihua Wang
• 金额: $ 24.84万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Early Career Researcher Award
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-06-28 至 2018-06-27
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DE150101212
• 关键词: situ; Atomic; scale; Deformation; Mechanism

Understanding the deformation of nanocrystalline (NC) metals is crucial for their practical application. So far, the deformation mechanism of ultrafine NC metals with grain size below 15 nanometre has been predicted by simulations which need to be verified experimentally. Using different in situ transmission electron microscopy deformation approaches, this project aims to determine deformation mechanisms of ultrafine NC platinum (Pt) at atomic-scale and to clarify how the deformation behaviour affects mechanical properties. The expected outcomes will advance the knowledge base in ultrafine NC metals and will provide guidance for developing advanced metallic materials with high strength/ductility that are the backbone for developing flexible and bendable devices.

了解纳米晶（NC）金属的变形对于它们的实际应用至关重要。到目前为止，已经通过模拟进行了模拟预测，晶粒尺寸低于15纳米的超细NC金属的变形机理需要进行实验验证。使用不同的原位透射电子显微镜变形方法，该项目旨在确定原子尺度上Ultrafine NC铂（PT）的变形机制，并阐明变形行为如何影响机械性能。预期的结果将推进超铁NC金属的知识库，并将为开发具有高强度/延展性的高级金属材料提供指导，这是开发灵活且可弯曲的设备的骨架。