{"title":"通过纹理工程提高镍钛铁基体中铌纳米线的热稳定性","authors":"Yuxuan Chen, Yang Li, Suoqing Yu, Junsong Zhang, Shan Huang, Feihong Chu, Xiaobin Shi, Kaixuan Li, Zishu Lian, Daqiang Jiang, Yang Ren, Lishan Cui, Kaiyuan Yu","doi":"10.1016/j.actamat.2024.120525","DOIUrl":null,"url":null,"abstract":"Metallic nanowires, renowned for their high strength and large elastic strain limits, have shown significant potential in rendering extraordinary structural and functional properties in composites. However, their integrity at high temperatures is often compromised due to fragmentation and spheroidization, processes driven by excess interfacial energy. Here, we demonstrate in a NiTiFe/Nb nanocomposite that the fragmentation and spheroidization of Nb nanowires can be significantly suppressed by tailoring the interfacial crystallographic orientation relationship between the nanowires and the matrix. By doping Fe into NiTi, we inhibit the typical deformation-induced amorphization of the NiTi-based matrix during severe deformation processing. The common (111)<sub>NiTi</sub>//(110)<sub>Nb</sub> texture is inherently suppressed and (110)<sub>NiTiFe</sub>//(110)<sub>Nb</sub> texture is formed instead. Such a change in texture allows Nb nanowires to retain their integrity up to 700°C in the NiTiFe matrix, in contrast to the 550°C in the counterparts. Simulation results indicate that the enhanced thermal stability of Nb nanowires is attributed to the reduced interfacial energy between (110)<sub>NiTiFe</sub> and (110)<sub>Nb</sub>. Additionally, Fe doping elevates the migration energy barrier for Nb diffusion, imposing further resistance to fragmentation and spheroidization.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":null,"pages":null},"PeriodicalIF":8.3000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancing thermal stability of Nb nanowires in a NiTiFe matrix via texture engineering\",\"authors\":\"Yuxuan Chen, Yang Li, Suoqing Yu, Junsong Zhang, Shan Huang, Feihong Chu, Xiaobin Shi, Kaixuan Li, Zishu Lian, Daqiang Jiang, Yang Ren, Lishan Cui, Kaiyuan Yu\",\"doi\":\"10.1016/j.actamat.2024.120525\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Metallic nanowires, renowned for their high strength and large elastic strain limits, have shown significant potential in rendering extraordinary structural and functional properties in composites. However, their integrity at high temperatures is often compromised due to fragmentation and spheroidization, processes driven by excess interfacial energy. Here, we demonstrate in a NiTiFe/Nb nanocomposite that the fragmentation and spheroidization of Nb nanowires can be significantly suppressed by tailoring the interfacial crystallographic orientation relationship between the nanowires and the matrix. By doping Fe into NiTi, we inhibit the typical deformation-induced amorphization of the NiTi-based matrix during severe deformation processing. The common (111)<sub>NiTi</sub>//(110)<sub>Nb</sub> texture is inherently suppressed and (110)<sub>NiTiFe</sub>//(110)<sub>Nb</sub> texture is formed instead. Such a change in texture allows Nb nanowires to retain their integrity up to 700°C in the NiTiFe matrix, in contrast to the 550°C in the counterparts. Simulation results indicate that the enhanced thermal stability of Nb nanowires is attributed to the reduced interfacial energy between (110)<sub>NiTiFe</sub> and (110)<sub>Nb</sub>. Additionally, Fe doping elevates the migration energy barrier for Nb diffusion, imposing further resistance to fragmentation and spheroidization.\",\"PeriodicalId\":238,\"journal\":{\"name\":\"Acta Materialia\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.3000,\"publicationDate\":\"2024-11-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Materialia\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.actamat.2024.120525\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Materialia","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.actamat.2024.120525","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhancing thermal stability of Nb nanowires in a NiTiFe matrix via texture engineering
Metallic nanowires, renowned for their high strength and large elastic strain limits, have shown significant potential in rendering extraordinary structural and functional properties in composites. However, their integrity at high temperatures is often compromised due to fragmentation and spheroidization, processes driven by excess interfacial energy. Here, we demonstrate in a NiTiFe/Nb nanocomposite that the fragmentation and spheroidization of Nb nanowires can be significantly suppressed by tailoring the interfacial crystallographic orientation relationship between the nanowires and the matrix. By doping Fe into NiTi, we inhibit the typical deformation-induced amorphization of the NiTi-based matrix during severe deformation processing. The common (111)NiTi//(110)Nb texture is inherently suppressed and (110)NiTiFe//(110)Nb texture is formed instead. Such a change in texture allows Nb nanowires to retain their integrity up to 700°C in the NiTiFe matrix, in contrast to the 550°C in the counterparts. Simulation results indicate that the enhanced thermal stability of Nb nanowires is attributed to the reduced interfacial energy between (110)NiTiFe and (110)Nb. Additionally, Fe doping elevates the migration energy barrier for Nb diffusion, imposing further resistance to fragmentation and spheroidization.
期刊介绍:
Acta Materialia serves as a platform for publishing full-length, original papers and commissioned overviews that contribute to a profound understanding of the correlation between the processing, structure, and properties of inorganic materials. The journal seeks papers with high impact potential or those that significantly propel the field forward. The scope includes the atomic and molecular arrangements, chemical and electronic structures, and microstructure of materials, focusing on their mechanical or functional behavior across all length scales, including nanostructures.