E. G. Volkova, A. I. Valiullin, V. P. Pilyugin, T. P. Tolmachev, A. A. Livinets, A. A. Gavrilova, D. A. Gurianov, A. Yu. Volkov
{"title":"低温下单质晶片高压扭转形成金属间al2pt相","authors":"E. G. Volkova, A. I. Valiullin, V. P. Pilyugin, T. P. Tolmachev, A. A. Livinets, A. A. Gavrilova, D. A. Gurianov, A. Yu. Volkov","doi":"10.1007/s12540-024-01866-8","DOIUrl":null,"url":null,"abstract":"<div><p>The intermetallic compound Al<sub>2</sub>Pt has potential of use in radiation sensing devices and selective solar absorbers, and is a promising protective coating of jet engine turbine blades. In our study, we demonstrate for the first time the possibility of forming nanocrystallites of the Al<sub>2</sub>Pt intermetallic compound in an Al-Pt disc produced by high pressure torsion (HPT) of elemental chips at cryogenic temperature. The composition of the Al + Pt mixture corresponds to the Al<sub>2</sub>Pt stoichiometry. Microhardness dependences against the distance from the disc center have been plotted and phase composition in the different points has been investigated. The formation of some high-strength phases was confirmed by a significant increase in microhardness near the edge of the cryodeformed Al-Pt disc. The Al<sub>2</sub>Pt intermetallic phase and amorphous phase were revealed both in XRD-scans and TEM-observations. The spread of Al<sub>2</sub>Pt crystallites sizes is wide and ranges from 10 to 200 nm. It was found that the amorphous phase had a composition of about 85Al-15Pt (at%). Although Pt is almost insoluble in Al in an equilibrium state, it was suggested that a non-equilibrium solid solution of Pt was formed in the Al matrix under cryo-HPT.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 7","pages":"2057 - 2068"},"PeriodicalIF":4.0000,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Formation of Intermetallic Al2Pt-Phase by High Pressure Torsion of Elemental Chips at Cryogenic Temperature\",\"authors\":\"E. G. Volkova, A. I. Valiullin, V. P. Pilyugin, T. P. Tolmachev, A. A. Livinets, A. A. Gavrilova, D. A. Gurianov, A. Yu. Volkov\",\"doi\":\"10.1007/s12540-024-01866-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The intermetallic compound Al<sub>2</sub>Pt has potential of use in radiation sensing devices and selective solar absorbers, and is a promising protective coating of jet engine turbine blades. In our study, we demonstrate for the first time the possibility of forming nanocrystallites of the Al<sub>2</sub>Pt intermetallic compound in an Al-Pt disc produced by high pressure torsion (HPT) of elemental chips at cryogenic temperature. The composition of the Al + Pt mixture corresponds to the Al<sub>2</sub>Pt stoichiometry. Microhardness dependences against the distance from the disc center have been plotted and phase composition in the different points has been investigated. The formation of some high-strength phases was confirmed by a significant increase in microhardness near the edge of the cryodeformed Al-Pt disc. The Al<sub>2</sub>Pt intermetallic phase and amorphous phase were revealed both in XRD-scans and TEM-observations. The spread of Al<sub>2</sub>Pt crystallites sizes is wide and ranges from 10 to 200 nm. It was found that the amorphous phase had a composition of about 85Al-15Pt (at%). Although Pt is almost insoluble in Al in an equilibrium state, it was suggested that a non-equilibrium solid solution of Pt was formed in the Al matrix under cryo-HPT.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"31 7\",\"pages\":\"2057 - 2068\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2024-12-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12540-024-01866-8\",\"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":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-024-01866-8","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}
Formation of Intermetallic Al2Pt-Phase by High Pressure Torsion of Elemental Chips at Cryogenic Temperature
The intermetallic compound Al2Pt has potential of use in radiation sensing devices and selective solar absorbers, and is a promising protective coating of jet engine turbine blades. In our study, we demonstrate for the first time the possibility of forming nanocrystallites of the Al2Pt intermetallic compound in an Al-Pt disc produced by high pressure torsion (HPT) of elemental chips at cryogenic temperature. The composition of the Al + Pt mixture corresponds to the Al2Pt stoichiometry. Microhardness dependences against the distance from the disc center have been plotted and phase composition in the different points has been investigated. The formation of some high-strength phases was confirmed by a significant increase in microhardness near the edge of the cryodeformed Al-Pt disc. The Al2Pt intermetallic phase and amorphous phase were revealed both in XRD-scans and TEM-observations. The spread of Al2Pt crystallites sizes is wide and ranges from 10 to 200 nm. It was found that the amorphous phase had a composition of about 85Al-15Pt (at%). Although Pt is almost insoluble in Al in an equilibrium state, it was suggested that a non-equilibrium solid solution of Pt was formed in the Al matrix under cryo-HPT.
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
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