{"title":"层状Ti-Al合金中界面和应变能驱动的异型选择","authors":"Zan Zhang, Jicheng Zhuo, Kunning Niu, Haiwei Zhang, Peng Sang, Shenglong Wang, Yongsheng Li","doi":"10.1186/s11671-025-04258-y","DOIUrl":null,"url":null,"abstract":"<div><p>The microstructure-property is essential important and complicated to be explored in metals. A novel multi-variant γ phase with nano-lamella incorporating multi-interface microstructure brings the special strength-ductility in Ti–Al alloys, the formation and selection of multi-variant interfaces are attractive questions. The phase-field simulations reveal the interface priority selection in the nucleation of γ variant with three kinds of interface, twin boundary (TB), pseudo-twin boundary (PTB) and ordered domain boundary (ODB), the low ratio of TB at nucleation stage transforms to the large ratio at growth stage, the interface elastic strain energy drives the γ variant selection. The findings reveal the role of interface elastic strain in facilitating the preferential development of specific γ variant, correlating an increase in TB with the escalation of elastic strain energy.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":51136,"journal":{"name":"Nanoscale Research Letters","volume":"20 1","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s11671-025-04258-y.pdf","citationCount":"0","resultStr":"{\"title\":\"Interface and strain energy driven variant selection in lamellar Ti–Al alloys\",\"authors\":\"Zan Zhang, Jicheng Zhuo, Kunning Niu, Haiwei Zhang, Peng Sang, Shenglong Wang, Yongsheng Li\",\"doi\":\"10.1186/s11671-025-04258-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The microstructure-property is essential important and complicated to be explored in metals. A novel multi-variant γ phase with nano-lamella incorporating multi-interface microstructure brings the special strength-ductility in Ti–Al alloys, the formation and selection of multi-variant interfaces are attractive questions. The phase-field simulations reveal the interface priority selection in the nucleation of γ variant with three kinds of interface, twin boundary (TB), pseudo-twin boundary (PTB) and ordered domain boundary (ODB), the low ratio of TB at nucleation stage transforms to the large ratio at growth stage, the interface elastic strain energy drives the γ variant selection. The findings reveal the role of interface elastic strain in facilitating the preferential development of specific γ variant, correlating an increase in TB with the escalation of elastic strain energy.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":51136,\"journal\":{\"name\":\"Nanoscale Research Letters\",\"volume\":\"20 1\",\"pages\":\"\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-05-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1186/s11671-025-04258-y.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanoscale Research Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1186/s11671-025-04258-y\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale Research Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1186/s11671-025-04258-y","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Interface and strain energy driven variant selection in lamellar Ti–Al alloys
The microstructure-property is essential important and complicated to be explored in metals. A novel multi-variant γ phase with nano-lamella incorporating multi-interface microstructure brings the special strength-ductility in Ti–Al alloys, the formation and selection of multi-variant interfaces are attractive questions. The phase-field simulations reveal the interface priority selection in the nucleation of γ variant with three kinds of interface, twin boundary (TB), pseudo-twin boundary (PTB) and ordered domain boundary (ODB), the low ratio of TB at nucleation stage transforms to the large ratio at growth stage, the interface elastic strain energy drives the γ variant selection. The findings reveal the role of interface elastic strain in facilitating the preferential development of specific γ variant, correlating an increase in TB with the escalation of elastic strain energy.
期刊介绍：
Nanoscale Research Letters (NRL) provides an interdisciplinary forum for communication of scientific and technological advances in the creation and use of objects at the nanometer scale. NRL is the first nanotechnology journal from a major publisher to be published with Open Access.
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