{"title":"通过液态金属置换获得钛/镁双连续复合材料的力学性能","authors":"Yusuke Ohashi, Hidemi Kato","doi":"10.1016/j.scriptamat.2024.116413","DOIUrl":null,"url":null,"abstract":"<div><div>A Ti/Mg composite with bicontinuous microstructure of α-Ti/α-Mg was fabricated using a Ti-<em>Sc</em> precursor's microstructure as a template. A Ti-<em>Sc</em> precursor alloy with α-Ti/α-<em>Sc</em> dual-phase microstructure was immersed in molten Mg, and using differences in chemical interactions between the alloy's components and the metallic melt, only α-<em>Sc</em> of the precursor was replaced by molten Mg. The Ti/Mg composite exhibited an ultimate tensile strength of 308.4 MPa and elongation of 6.8 % by a tensile test. The microstructure elongated in the tensile direction indicates that the α-Ti and α-Mg phases cooperatively deformed and contributed to ductility. The continuous microstructure in the tensile direction of the immiscible phases and the weak interface that does not separate because of geometric constraints may be the reason why the hardness properties of the composite follow the Voigt rule.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"256 ","pages":"Article 116413"},"PeriodicalIF":5.3000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mechanical properties of Ti/Mg bicontinuous composite by liquid metal replacement\",\"authors\":\"Yusuke Ohashi, Hidemi Kato\",\"doi\":\"10.1016/j.scriptamat.2024.116413\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A Ti/Mg composite with bicontinuous microstructure of α-Ti/α-Mg was fabricated using a Ti-<em>Sc</em> precursor's microstructure as a template. A Ti-<em>Sc</em> precursor alloy with α-Ti/α-<em>Sc</em> dual-phase microstructure was immersed in molten Mg, and using differences in chemical interactions between the alloy's components and the metallic melt, only α-<em>Sc</em> of the precursor was replaced by molten Mg. The Ti/Mg composite exhibited an ultimate tensile strength of 308.4 MPa and elongation of 6.8 % by a tensile test. The microstructure elongated in the tensile direction indicates that the α-Ti and α-Mg phases cooperatively deformed and contributed to ductility. The continuous microstructure in the tensile direction of the immiscible phases and the weak interface that does not separate because of geometric constraints may be the reason why the hardness properties of the composite follow the Voigt rule.</div></div>\",\"PeriodicalId\":423,\"journal\":{\"name\":\"Scripta Materialia\",\"volume\":\"256 \",\"pages\":\"Article 116413\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Scripta Materialia\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1359646224004482\",\"RegionNum\":2,\"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":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646224004482","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Mechanical properties of Ti/Mg bicontinuous composite by liquid metal replacement
A Ti/Mg composite with bicontinuous microstructure of α-Ti/α-Mg was fabricated using a Ti-Sc precursor's microstructure as a template. A Ti-Sc precursor alloy with α-Ti/α-Sc dual-phase microstructure was immersed in molten Mg, and using differences in chemical interactions between the alloy's components and the metallic melt, only α-Sc of the precursor was replaced by molten Mg. The Ti/Mg composite exhibited an ultimate tensile strength of 308.4 MPa and elongation of 6.8 % by a tensile test. The microstructure elongated in the tensile direction indicates that the α-Ti and α-Mg phases cooperatively deformed and contributed to ductility. The continuous microstructure in the tensile direction of the immiscible phases and the weak interface that does not separate because of geometric constraints may be the reason why the hardness properties of the composite follow the Voigt rule.
期刊介绍：
Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.
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