Fundamental mechanisms of removal of stacking fault tetrahedra by mobile low energy boundaries
移动低能边界去除堆垛层错四面体的基本机制
基本信息
- 批准号:1643915
- 负责人:
- 金额:$ 33.46万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-05-01 至 2018-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
TECHNICAL SUMMARY: The objective of this work is to understand the fundamental mechanisms through which mobile twin boundaries (TBs) actively engage and rapidly remove stacking fault tetrahedra (SFTs). The ultimate goal is to design advanced metallic materials that can effectively remove SFTs at low-to-intermediate temperatures. SFTs are detrimental defects in neutron or proton irradiated structural metallic materials with face-centered-cubic structures as they can induce significant hardening and swelling. The PI will use a combination of in situ radiation and in situ nanoindentation technique to investigate the interaction of SFTs with TBs. These studies can explain the annihilation of SFTs by TBs and provide crucial information to validate annihilation mechanisms predicted by MD simulations. Also significant mobility of TBs may make them attractive candidates to remove radiation induced immobile defects, such as SFTs. NON-TECHNICAL SUMMARY:If successful, the benefits of this research will include discovery of important criteria for the design of swelling resistant structural materials for next generation nuclear reactors, and offer the basis for further exploration of physics of radiation induced twin boundary migrations. This project will provide research training to graduate and undergraduate students at Texas A&M University (TAMU). Special effort will be made to recruit female and other minority students through the "Pathway to Ph.D program" funded by TAMU. The project will also enhance the materials science and nanoengineering curricula by incorporating relevant results into classes when introducing advanced nanomaterials, and benefit the new formed Department of Materials Science and Engineering. The PI will disseminate results to a much broader audience by involving high school teachers in the research project through NSF-RET program, and attending international conferences. Collaborations with McMaster University and several DOE National Laboratories will offer graduate students summer research experience.
技术综述:这项工作的目的是了解移动孪生边界(TBS)主动接触和快速移除层错四面体(SFT)的基本机制。最终目标是设计先进的金属材料,能够在中低温度下有效地去除SFT。在中子或质子辐照的面心立方结构金属材料中,SFT是一种有害的缺陷,因为它们可以引起显著的硬化和膨胀。PI将结合原位辐射和原位纳米压痕技术来研究SFTS与TBS的相互作用。这些研究可以解释TBS对SFT的湮没,并为验证MD模拟预测的湮没机制提供关键信息。此外,TBS的显著迁移率可能使其成为去除辐射引起的固定缺陷的有吸引力的候选材料,例如SFT。非技术综述:如果成功,这项研究的好处将包括发现下一代核反应堆防膨胀结构材料设计的重要标准,并为进一步探索辐射诱导孪晶边界迁移的物理学提供基础。该项目将为德克萨斯农工大学(TAMU)的研究生和本科生提供研究培训。将特别努力招收女性和其他少数族裔学生,通过TAMU资助的“博士之路”项目。该项目还将加强材料科学和纳米工程课程,在介绍先进纳米材料时将相关成果纳入课堂,并使新成立的材料科学与工程系受益。PI将通过NSF-RET计划让高中教师参与研究项目,并参加国际会议,从而将成果传播给更广泛的受众。与麦克马斯特大学和几个美国能源部国家实验室的合作将为研究生提供暑期研究经验。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
In Situ Studies on the Irradiation-Induced Twin Boundary-Defect Interactions in Cu
- DOI:10.1007/s11661-017-4293-5
- 发表时间:2017-08
- 期刊:
- 影响因子:0
- 作者:C. Fan;Jin Li;Jin Li;Z. Fan;Z. Fan;Haiyan Wang;Xinghang Zhang
- 通讯作者:C. Fan;Jin Li;Jin Li;Z. Fan;Z. Fan;Haiyan Wang;Xinghang Zhang
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Xinghang Zhang其他文献
Tribology of incoloy 800HT for nuclear reactors under helium environment at elevated temperatures
高温氦环境下核反应堆用 incoloy 800HT 的摩擦学
- DOI:
- 发表时间:
2019 - 期刊:
- 影响因子:5
- 作者:
Saifur Rahman;Jie Ding;A. Beheshti;Xinghang Zhang;A. Polycarpou - 通讯作者:
A. Polycarpou
Preparation of bulk ultrafine-grained and nanostructured Zn, Al and their alloys by in situ consolidation of powders during mechanical attrition
机械研磨过程中粉末原位固结制备块状超细晶纳米结构 Zn、Al 及其合金
- DOI:
- 发表时间:
2002 - 期刊:
- 影响因子:0
- 作者:
Xinghang Zhang;Haiyan Wang;M. Kassem;J. Narayan;C. Koch - 通讯作者:
C. Koch
Variation model of north-south plant species diversity in the Qinling-Daba Mountains in China
- DOI:
10.1016/j.gecco.2022.e02190 - 发表时间:
2022-10-01 - 期刊:
- 影响因子:3.400
- 作者:
Xinghang Zhang;Baiping Zhang;Yonghui Yao;Junjie Liu;Jing Wang;Fuqin Yu;Jiayu Li - 通讯作者:
Jiayu Li
Enhancement of Radiation Tolerance by Interfaces in Nanostructured Metallic Materials
- DOI:
10.21236/ada596809 - 发表时间:
2013-06 - 期刊:
- 影响因子:0
- 作者:
Xinghang Zhang - 通讯作者:
Xinghang Zhang
Design of 3D Oxide–Metal Hybrid Metamaterial for Tailorable Light–Matter Interactions in Visible and Near‐Infrared Region
用于可见光和近红外区域可定制光-物质相互作用的 3D 氧化物-金属混合超材料设计
- DOI:
10.1002/adom.202001154 - 发表时间:
2020 - 期刊:
- 影响因子:9
- 作者:
Di Zhang;P. Lu;S. Misra;Ashley Wissel;Zihao He;Z. Qi;Xingyao Gao;Xing Sun;Juncheng Liu;Juanjuan Lu;Xinghang Zhang;Haiyan Wang - 通讯作者:
Haiyan Wang
Xinghang Zhang的其他文献
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{{ truncateString('Xinghang Zhang', 18)}}的其他基金
NSF-DFG: Hierarchical Design and Additive Manufacturing of Metallic Programmable Metamaterials
NSF-DFG:金属可编程超材料的分层设计和增材制造
- 批准号:
2228266 - 财政年份:2023
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Collaborative Research: Interface enabled plasticity in high-strength Co-based intermetallics
合作研究:高强度钴基金属间化合物的界面塑性
- 批准号:
2210152 - 财政年份:2022
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Deformation Mechanisms of Gradient Steels with High Strength and Ductility
高强高塑梯度钢的变形机制
- 批准号:
2217727 - 财政年份:2022
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Mechanics and Kinetics of Void Swelling in Irradiated Nanoporous Materials
辐照纳米多孔材料中空隙膨胀的力学和动力学
- 批准号:
1728419 - 财政年份:2017
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Collaborative Research: deformation mechanisms of fcc and hcp Cobalt with high-density stacking faults
合作研究:具有高密度堆垛层错的fcc和hcp钴的变形机制
- 批准号:
1642759 - 财政年份:2016
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Collaborative Research: deformation mechanisms of fcc and hcp Cobalt with high-density stacking faults
合作研究:具有高密度堆垛层错的fcc和hcp钴的变形机制
- 批准号:
1508366 - 财政年份:2015
- 资助金额:
$ 33.46万 - 项目类别:
Standard Grant
Fundamental mechanisms of removal of stacking fault tetrahedra by mobile low energy boundaries
移动低能边界去除堆垛层错四面体的基本机制
- 批准号:
1304101 - 财政年份:2013
- 资助金额:
$ 33.46万 - 项目类别:
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非晶金属涂层的摩擦和塑性
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1161978 - 财政年份:2012
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$ 33.46万 - 项目类别:
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1129065 - 财政年份:2011
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1007969 - 财政年份:2010
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