Intrinsic Nano-Diffusion-Couple for Studying High Temperature Diffusion in Compositionally Complex Superalloys

Y. Eggeler, D. Kubacka, P. Pichler, Mingjian Wu, E. Spiecker
{"title":"Intrinsic Nano-Diffusion-Couple for Studying High Temperature Diffusion in Compositionally Complex Superalloys","authors":"Y. Eggeler, D. Kubacka, P. Pichler, Mingjian Wu, E. Spiecker","doi":"10.2139/ssrn.3680335","DOIUrl":null,"url":null,"abstract":"We present a new approach for the quantitative study of high-temperature diffusion in compositionally complex superalloys on the nano-scale. As key element, the approach utilizes the γ/γ'-microstructure itself as intrinsic nano-diffusion-couple. By establishing equilibrium at one temperature followed by annealing at a different temperature, well-defined transient states are generated which are studied using analytical transmission electron microscopy (TEM). We demonstrate this approach for a high-performance multi-component superalloy. The temporal evolution of element concentrations is consistently revealed for γ- and γ'-forming elements and is compared to multi-component diffusion simulations. Excellent agreement is obtained for Ni, Co, and Cr whereas diffusion of Al and, in particular, Re lacks behind in the experiment. Finally, it is demonstrated that transient states can also be captured by in-situ TEM using chip-based heating devices. The nano-diffusion-couple approach offers great opportunities for diffusion studies in compositionally complex superalloys and might be extended to other two-phase multicomponent systems.","PeriodicalId":18268,"journal":{"name":"Materials Engineering eJournal","volume":"6 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2020-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Engineering eJournal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2139/ssrn.3680335","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

We present a new approach for the quantitative study of high-temperature diffusion in compositionally complex superalloys on the nano-scale. As key element, the approach utilizes the γ/γ'-microstructure itself as intrinsic nano-diffusion-couple. By establishing equilibrium at one temperature followed by annealing at a different temperature, well-defined transient states are generated which are studied using analytical transmission electron microscopy (TEM). We demonstrate this approach for a high-performance multi-component superalloy. The temporal evolution of element concentrations is consistently revealed for γ- and γ'-forming elements and is compared to multi-component diffusion simulations. Excellent agreement is obtained for Ni, Co, and Cr whereas diffusion of Al and, in particular, Re lacks behind in the experiment. Finally, it is demonstrated that transient states can also be captured by in-situ TEM using chip-based heating devices. The nano-diffusion-couple approach offers great opportunities for diffusion studies in compositionally complex superalloys and might be extended to other two-phase multicomponent systems.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
研究成分复杂高温合金高温扩散的本征纳米扩散偶联
我们提出了一种在纳米尺度上定量研究成分复杂高温合金高温扩散的新方法。作为关键元素,该方法利用γ/γ′-微观结构本身作为固有的纳米扩散偶。通过在一个温度下建立平衡,然后在不同温度下退火,产生了定义良好的瞬态,并使用分析透射电子显微镜(TEM)对其进行了研究。我们将这种方法应用于高性能多组分高温合金。元素浓度的时间演化一致揭示了γ-和γ'形成元素,并与多组分扩散模拟进行了比较。Ni, Co, Cr的扩散与实验结果一致,而Al,特别是Re的扩散较差。最后,利用芯片加热装置,原位透射电镜也可以捕获瞬态。纳米扩散偶方法为复杂合金的扩散研究提供了很大的机会,并可能推广到其他两相多组分体系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Short-Range Order Clusters in the Long-Period Stacking/Order Phases With an Intrinsic-I Type Stacking Fault in Mg-Co-Y Alloys Phase Decomposition and Strengthening in Hfnbtatizr High Entropy Alloy from First-Principles Calculations Development of Advanced Stellarator With Identical Permanent Magnet Blocks Solvent-Rich Magnesium-Based Bulk Metallic Glasses in the Mg–Pd–Ca and Mg–Pd–Yb Alloy Systems Light-Driven Proton Transport Across Liposomal Membranes Enabled by Janus Metal-Organic Layers
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1