Cryogenic Wear of Novel High-Entropy Alloys

新型高熵合金的低温磨损

基本信息

  • 批准号:
    1758924
  • 负责人:
  • 金额:
    $ 44.09万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2018
  • 资助国家:
    美国
  • 起止时间:
    2018-09-01 至 2023-08-31
  • 项目状态:
    已结题

项目摘要

Friction and wear are a leading cause of energy loss, inefficiency, and failure in structural alloys, and a scientific understanding of the mechanisms of wear is critical to the design of high performance materials for energy, manufacturing, and infrastructure applications. A new class of alloys known as High Entropy Alloys has recently been found to possess both high strength and the potential for very high wear resistance. This award supports research to determine the fundamental mechanisms of this high wear resistance in two novel High Entropy Alloy compositions. The new knowledge to be gained from this work has the potential to enable the design of high performance materials able to withstand large forces in extreme service environments, including friction and wear at cryogenic temperatures. Students engaged in the research activities will gain valuable educational experience at the undergraduate and graduate level.The aim of this research project is to examine the hypotheses that the high entropy alloys CoCrFeMnNi and carbon-doped Fe40.4Ni11.3Mn34.8Al7.5Cr6, because of their superior yield strengths compared to stainless steel, will show better wear resistance than stainless steel at 77 K, that that the contacting surfaces of the two alloys will be resistant to phase transformations during dry sliding wear at either room temperature or 77 K, and that the worn surfaces will not exhibit ferromagnetism, whereas austenitic stainless steel AISI 316 will exhibit both of these problems. Dry sliding pin-on-disk wear tests will be performed at both 77 K and 293 K at different sliding velocities and in different environments on these two alloys, and compared to the behavior of 316 stainless steel. The relationship between the microstructure, deformation processes (including material transfer), phase transformations, friction and wear behavior will be determined. Microstructural characterization of the pre- and post-wear specimens will include transmission electron microscopy, X-ray dispersive spectroscopy; computed-assisted profilometry; X-ray diffraction; nanoindentation; cross-sectional scanning electron microscopy, atom probe tomography; and X-ray photoelectron spectroscopy.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
摩擦和磨损是能源损失,效率低下和结构合金失败的主要原因,对磨损机制的科学理解对于设计高性能材料的高性能材料至关重要。最近发现,一种称为高熵合金的新型合金具有高强度,并且具有非常高的耐磨性。该奖项支持研究,以确定两种新型高熵合金组成中这种高磨损耐药性的基本机制。从这项工作中获得的新知识有可能使高性能材料的设计能够在极端的服务环境中承受大力量,包括在低温温度下摩擦和磨损。从事研究活动的学生将在本科和研究生水平上获得有价值的教育经验。该研究项目的目的是检查假设的假设,即高熵合金cocrfemnni和碳掺杂的FE40.40.40.4NI11.34.8Al7.5Cr6与以下7.5cr6相比,它与7.5cr相比,在7级上的耐磨钢,因为它的连接均匀的钢制均可在7级上保持不适的钢制,因此他的耐磨性均匀的钢制均可出现。在室温或77 K下干滑动期间,两种合金的表面对相变的相变,并且磨损的表面不会表现出铁磁性,而奥斯丁构的不锈钢AISI 316则将表现出这两个问题。在不同的滑动速度和这两种合金上的不同环境中,将在77 K和293 K上进行干燥的滑动钉磨损测试,并与316不锈钢的行为相比。将确定微观结构,变形过程(包括材料转换),相变,摩擦和磨损行为之间的关系。 前服装和后样品的显微结构表征包括透射电子显微镜,X射线色散光谱;计算的辅助验证仪; X射线衍射;纳米凹痕;横截面扫描电子显微镜,原子探针断层扫描;该奖项反映了NSF的法定任务,并被认为是通过基金会的知识分子优点和更广泛的影响审查标准通过评估来支持的。

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A comparison of the dry sliding wear behavior of NiCoCr medium entropy alloy with 316 stainless steel
  • DOI:
    10.1016/j.matchar.2020.110132
  • 发表时间:
    2020-02
  • 期刊:
  • 影响因子:
    4.7
  • 作者:
    Xiao-bin Guo;I. Baker;F. Kennedy;M. Song
  • 通讯作者:
    Xiao-bin Guo;I. Baker;F. Kennedy;M. Song
A comparison of the dry sliding wear of single-phase f.c.c. carbon-doped Fe40.4Ni11.3Mn34.8Al7.5Cr6 and CoCrFeMnNi high entropy alloys with 316 stainless steel
  • DOI:
    10.1016/j.matchar.2020.110693
  • 发表时间:
    2020-12
  • 期刊:
  • 影响因子:
    4.7
  • 作者:
    Xiao-bin Guo;Xiao-bin Guo;I. Baker;F. Kennedy;S. Ringer;Hansheng Chen;Weidong Zhang;Yong Liu-
  • 通讯作者:
    Xiao-bin Guo;Xiao-bin Guo;I. Baker;F. Kennedy;S. Ringer;Hansheng Chen;Weidong Zhang;Yong Liu-
Development of a new cryogenic tribotester and its application to the study of cryogenic wear of AISI 316 stainless steel
新型低温摩擦测试仪的研制及其在AISI 316不锈钢低温磨损研究中的应用
  • DOI:
    10.1016/j.wear.2022.204309
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    5
  • 作者:
    Kennedy, Francis E.;Ye, Youxiong;Baker, Ian;White, Raina R.;Barry, Robert L.;Tang, Aubrey Y.;Song, Min
  • 通讯作者:
    Song, Min
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Ian Baker其他文献

Dynamic Observations of the Densification of Polar Firn Under Compression Using a Micro‐Computed Tomograph
使用微型计算机断层扫描仪动态观察压缩下极地云杉的致密化
SiB3模式对作物区CO2通量的模拟研究
  • DOI:
  • 发表时间:
    2013
  • 期刊:
  • 影响因子:
    0
  • 作者:
    张庚军;卢立新;蒋玲梅;蒋磊;Ian Baker
  • 通讯作者:
    Ian Baker
SiB3对不同下垫面的模拟试验与验证
  • DOI:
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    0
  • 作者:
    蒋玲梅;卢立新;邢伟坡;张立新;Ian Baker;张庚军;左菁颖
  • 通讯作者:
    左菁颖
Institutional Logics as a Theoretical Framework: A Comparison of Performance Based Funding Policies in the United Kingdom, Germany, and France
作为理论框架的制度逻辑:英国、德国和法国基于绩效的资助政策比较
  • DOI:
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    1.6
  • 作者:
    Ian Baker
  • 通讯作者:
    Ian Baker
A new technique for firn grain-size measurement using SEM image analysis
使用 SEM 图像分析测量晶粒尺寸的新技术
  • DOI:
    10.3189/002214310791190893
  • 发表时间:
    2010
  • 期刊:
  • 影响因子:
    3.4
  • 作者:
    N. Spaulding;D. Meese;Ian Baker;P. A. Mayewski;Gordon S. Hamilton
  • 通讯作者:
    Gordon S. Hamilton

Ian Baker的其他文献

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{{ truncateString('Ian Baker', 18)}}的其他基金

REU Site: Materials Make the World, A Dartmouth College REU Site in Materials Science
REU 网站:Materials Make the World,达特茅斯学院 REU 材料科学网站
  • 批准号:
    2242514
  • 财政年份:
    2023
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Observations and Micromechanical Modeling of the Behavior of Snow/Ice Lenses Under Load in Order to Understand Avalanche Nucleation
为了了解雪崩成核,对雪/冰透镜在负载下的行为进行观察和微机械建模
  • 批准号:
    2227842
  • 财政年份:
    2023
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
MRI: Acquisition of a Scanning Transmission Electron Microscope for Research in Northern New England
MRI:购买扫描透射电子显微镜用于新英格兰北部的研究
  • 批准号:
    2213198
  • 财政年份:
    2022
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Using First Principles Calculations and Electro-Pulse Annealing to Design and Manufacture Low-Cost Permanent Magnets
使用第一原理计算和电脉冲退火来设计和制造低成本永磁体
  • 批准号:
    2032592
  • 财政年份:
    2021
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Equal Channel Angular Extrusion (ECAE) Processing of Tau-MnAl Magnets
Tau-MnAl 磁体的等通道角挤压 (ECAE) 加工
  • 批准号:
    1852529
  • 财政年份:
    2019
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Collaborative Research: The Impact of Impurities and Stress State on Polycrystalline Ice Deformation
合作研究:杂质和应力状态对多晶冰变形的影响
  • 批准号:
    1851094
  • 财政年份:
    2019
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Understanding the Deformation Behavior of Alumina-Forming Austenitic Stainless Steels
了解形成氧化铝的奥氏体不锈钢的变形行为
  • 批准号:
    1708091
  • 财政年份:
    2017
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Continuing Grant
Dynamic Observations of the Evolution of Firn
杉木演化的动态观测
  • 批准号:
    1603239
  • 财政年份:
    2016
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
Understanding Precipitation and the Mechanical Properties of Novel Laves Phase-Strengthened Austenitic Steels for Energy Applications
了解用于能源应用的新型 Laves 相强化奥氏体钢的析出和机械性能
  • 批准号:
    1206240
  • 财政年份:
    2012
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant
The Effects of Soluble Impurities on the Flow and Fabric of Polycrystalline Ice
可溶杂质对多晶冰流动和结构的影响
  • 批准号:
    1141411
  • 财政年份:
    2012
  • 资助金额:
    $ 44.09万
  • 项目类别:
    Standard Grant

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多入口下穿隧道合流区域交通事故演化机理与自解释调控方法
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