通过纳米级成分调制增强强化

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-09-22 DOI:10.1016/j.scriptamat.2025.116999

Manish Jain , Paul G. Kotula , Kyle Dorman , Saaketh Desai , Sadhvikas Addamane , David P. Adams , Frank W. DelRio , Remi Dingreville , Brad L. Boyce

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引用次数: 0

摘要

本研究探讨了纳米晶Pt-Au薄膜强化的起源。根据之前对784部候选电影的高通量组合调查，选择了5部不同的电影进行详细分析。显微结构表征采用透射电子显微镜、能量色散x射线光谱、x射线衍射、x射线反射率和自动晶体取向图来量化晶粒尺寸、溶质含量、织构、密度和位错含量的贡献。除了这些来源外，最高硬度薄膜受益于纳米级成分调制，优于缺乏成分调制的同类Pt-Au合金。调制是类似于spinodal分解微观结构，虽然在其形成机制不同。这项工作为通过组合探索和随后的详细分析确定的微妙的纳米级化学特征如何影响合金系统的机械性能提供了法医分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhanced strengthening via nanoscale composition modulation

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Enhanced strengthening via nanoscale composition modulation

This work investigates the origins of strengthening in nanocrystalline Pt-Au thin films. Drawing from a previous high-throughput combinatorial survey of 784 candidate films, five distinct films were selected for detailed analysis. Microstructural characterization using transmission electron microscopy, energy-dispersive X-ray spectroscopy, x-ray diffraction, x-ray reflectivity, and automated crystal orientation mapping was used to quantify contributions from grain size, solute content, texture, density, and dislocation content. In addition to those sources, the highest hardness film benefited from nanoscale composition modulations, outperforming comparable Pt-Au alloys that lacked composition modulation. The modulations are akin to spinodal decomposition microstructures, though distinct in their formation mechanism. This work provides a forensic analysis of how subtle, nanoscale chemical features, identified through combinatorial exploration and subsequent detailed analysis, can influence the mechanical properties of alloy systems.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.