Structural Relaxation and Properties of Planar Defects in Amorphous and Nanocrystalline Metals

非晶和纳米晶金属中平面缺陷的结构松弛和性质

基本信息

项目摘要

The grant explores the physical properties of amorphous and nanocrystalline metals with emphasis on the relaxation of shear bands and grain boundaries respectively in these materials. The objective is to modify the relaxation state of these defects by thermal treatment. The goal is to characterize the structural changes using the state-of-the-art transmission electron microscopy including high-resolution imaging and energy filtering. The materials will be processed using electrodeposition and ball milling techniques. Various properties such as the stored enthalpy, stability, hardness, strain-rate sensitivity and diffusion behavior will be evaluated.The results from the grant are expected to contribute to the fundamental understanding of the structure of shear bands and nanograin boundaries, modification of this structure, and the resulting property changes. These will contribute to the knowledge base for structuralapplications of amorphous and nanocrystalline metals such as in MEMS and NEMS technologies. The grant helps to educate and train graduate students in state-of-the-art electron microscopy and property characterization of structural materials.
该基金探讨了非晶态金属和纳米晶态金属的物理性质,重点放在这些材料中剪切带和晶界的松弛。其目的是通过热处理来改变这些缺陷的松弛状态。我们的目标是使用最先进的透射电子显微镜来表征结构变化,包括高分辨率成像和能量过滤。这些材料将使用电沉积和球磨技术进行加工。我们将评估各种性质,如储存的热值、稳定性、硬度、应变率敏感性和扩散行为。这项资助的结果有望有助于从根本上理解剪切带和纳米晶界的结构,修改这种结构,以及由此产生的性质变化。这些将有助于为非晶态和纳米晶金属在MEMS和NEMS技术中的结构应用提供知识库。该助学金帮助教育和培训研究生在最先进的电子显微镜和结构材料的性质表征方面。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Michael Atzmon其他文献

Monte-Carlo simulations of spinodal ordering and decomposition in compositionally modulated alloys
  • DOI:
    10.1557/jmr.1990.0092
  • 发表时间:
    2011-01-31
  • 期刊:
  • 影响因子:
    2.900
  • 作者:
    Michael Atzmon
  • 通讯作者:
    Michael Atzmon

Michael Atzmon的其他文献

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{{ truncateString('Michael Atzmon', 18)}}的其他基金

Mechanical properties and thermomechanical processing of metallic glasses -- the role of elemental distributions and size-dependent properties of shear transformation zones
金属玻璃的机械性能和热机械加工——元素分布的作用和剪切转变区的尺寸相关性能
  • 批准号:
    1708043
  • 财政年份:
    2017
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant
Properties of Atomic-Scale Flow Defects in Metallic Glasses
金属玻璃中原子尺度流动缺陷的性质
  • 批准号:
    1307884
  • 财政年份:
    2013
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant
Structure, Properties and Relaxation of Shear Bands in Metallic Glasses
金属玻璃剪切带的结构、性能和弛豫
  • 批准号:
    0605911
  • 财政年份:
    2006
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant
ISMANAM 2001 - The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials; Ann Arbor, MI; June 24-29, 2001
ISMANAM 2001 - 亚稳态、机械合金化和纳米晶材料国际研讨会;
  • 批准号:
    0112193
  • 财政年份:
    2001
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Standard Grant
Quantitative Study of Nonequilibrium Phase Formation by Mechanical Attrition
机械磨损非平衡相形成的定量研究
  • 批准号:
    9902435
  • 财政年份:
    1999
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant
Quantitative Study of Strain-Enhanced Atomic Transport in Mechanically Milled Metal Powders
机械研磨金属粉末中应变增强原子输运的定量研究
  • 批准号:
    9500617
  • 财政年份:
    1995
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant
Thermodynamics and Kinetics of Metastable Alloy Formation
亚稳态合金形成的热力学和动力学
  • 批准号:
    9200132
  • 财政年份:
    1992
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Standard Grant
Thermodynamics and Kinetics of Metastable Alloy Formation
亚稳态合金形成的热力学和动力学
  • 批准号:
    8820285
  • 财政年份:
    1989
  • 资助金额:
    $ 36.5万
  • 项目类别:
    Continuing Grant

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远离平衡的系统:弛豫过程和稳态特性
  • 批准号:
    1606814
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    2017
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Surface Stress Relaxation: Science and Effects on Glass Properties
表面应力松弛:科学及其对玻璃性能的影响
  • 批准号:
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Optical Property, Charge Carrier Relaxation and Charge Transfer Properties in Chemically-Synthesized Layered TiS2 Nanodiscs with Controlled Lateral and Transverse Dimensions
横向和横向尺寸可控的化学合成层状 TiS2 纳米圆盘的光学特性、载流子弛豫和电荷转移特性
  • 批准号:
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  • 财政年份:
    2014
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    $ 36.5万
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结构和松弛对氧化物玻璃疲劳和微机械性能的影响——挥发物和键合状态的作用
  • 批准号:
    224489083
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Improvement of relaxation of frost hydraulic pressure and mechanical properties of concrete by water-repellent high strength ceramics
拒水高强陶瓷改善混凝土冻水压力松弛及力学性能
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