{"title":"EBSD and Phase-Field Crystal Simulation Revealed the Inhibition of Al3Ti on Crack Extention in TC4-2024Al Laminated Composites","authors":"Yihong Liu, Zhuo Song, Muxi Li, Kangan Wang, Zhiping Xiong, Hua Hou, Yuhong Zhao","doi":"10.1007/s40195-024-01788-9","DOIUrl":null,"url":null,"abstract":"<div><p>In Ti–Al laminated composites, cracks nucleate preferentially at the Al<sub>3</sub>Ti layer, but the inhibitory effect of Al<sub>3</sub>Ti on crack extension is ignored. Interestingly, by combining experiment and phase-field crystal simulation, we found that the micrometer Al<sub>3</sub>Ti particles in the diffusion layer play the role of crack deflection and passivation, which is attributed to the lattice distortion induced by Al<sub>3</sub>Ti consumes the energy of the crack in extension. In addition, it is found that the growth process of Al<sub>3</sub>Ti is divided into two stages: nucleation stage and growth stage. Compared with the growth stage, the Al<sub>3</sub>Ti grains in the nucleation stage are finer in the growth layer. Finer grains show better crack deflection and avoid stress concentration.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 2","pages":"259 - 275"},"PeriodicalIF":3.9000,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica Sinica-English Letters","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1007/s40195-024-01788-9","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
In Ti–Al laminated composites, cracks nucleate preferentially at the Al3Ti layer, but the inhibitory effect of Al3Ti on crack extension is ignored. Interestingly, by combining experiment and phase-field crystal simulation, we found that the micrometer Al3Ti particles in the diffusion layer play the role of crack deflection and passivation, which is attributed to the lattice distortion induced by Al3Ti consumes the energy of the crack in extension. In addition, it is found that the growth process of Al3Ti is divided into two stages: nucleation stage and growth stage. Compared with the growth stage, the Al3Ti grains in the nucleation stage are finer in the growth layer. Finer grains show better crack deflection and avoid stress concentration.
期刊介绍：
This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.
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