A. G. Malikov, I. E. Vitoshkin, M. I. Mironova, A. P. Zavjalov, K. E. Kuper
{"title":"同步辐射对第三代铝锂合金激光焊接接头相组成演变的研究","authors":"A. G. Malikov, I. E. Vitoshkin, M. I. Mironova, A. P. Zavjalov, K. E. Kuper","doi":"10.1134/S1062873824708857","DOIUrl":null,"url":null,"abstract":"<p>We studied the evolution of the phase composition of laser welded joints before and after heat treatment of 3rd generation Al–Li alloys using synchrotron radiation. The article demonstrates the fundamental role of the alloying elements of copper and lithium in formation of the phase composition of the fusion zone of the weld. It has been established that laser exposure changes the phase composition of the alloy. Namely, low copper contents mainly lead to formation of T<sub>2</sub>(Al<sub>6</sub>CuLi<sub>3</sub>) and T<sub>3</sub>(Al<sub>5</sub>CuLi<sub>3</sub>) phases, the average copper contents form T<sub>1</sub>(Al<sub>2</sub>CuLi), T<sub>2</sub>(Al<sub>6</sub>CuLi<sub>3</sub>), T<sub>3</sub>(Al<sub>5</sub>CuLi<sub>3</sub>) phases and the presence of high copper contents results in formation of T<sub>1</sub>(Al<sub>2</sub>CuLi) phase at the boundaries of dendrite. Post-heat treatment restores the initial phase composition in the fusion zone. As for the solid solution, the δ'(Al<sub>3</sub>Li) phase is formed at low copper contents, the δ'(Al<sub>3</sub>Li) and T<sub>1</sub>(Al<sub>2</sub>CuLi) phases are formed at average copper contents, and T<sub>1</sub>(Al<sub>2</sub>CuLi) phase is observed at high copper contents. Consequently, this makes it possible to improve the mechanical properties of weld joint specimens to match the numbers of the initial alloy.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 1 supplement","pages":"S89 - S99"},"PeriodicalIF":0.4800,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of the Evolution of the Phase Composition of Laser Welded Joints of Third-Generation Al–Li Alloys with the Use of Synchrotron Radiation\",\"authors\":\"A. G. Malikov, I. E. Vitoshkin, M. I. Mironova, A. P. Zavjalov, K. E. Kuper\",\"doi\":\"10.1134/S1062873824708857\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We studied the evolution of the phase composition of laser welded joints before and after heat treatment of 3rd generation Al–Li alloys using synchrotron radiation. The article demonstrates the fundamental role of the alloying elements of copper and lithium in formation of the phase composition of the fusion zone of the weld. It has been established that laser exposure changes the phase composition of the alloy. Namely, low copper contents mainly lead to formation of T<sub>2</sub>(Al<sub>6</sub>CuLi<sub>3</sub>) and T<sub>3</sub>(Al<sub>5</sub>CuLi<sub>3</sub>) phases, the average copper contents form T<sub>1</sub>(Al<sub>2</sub>CuLi), T<sub>2</sub>(Al<sub>6</sub>CuLi<sub>3</sub>), T<sub>3</sub>(Al<sub>5</sub>CuLi<sub>3</sub>) phases and the presence of high copper contents results in formation of T<sub>1</sub>(Al<sub>2</sub>CuLi) phase at the boundaries of dendrite. Post-heat treatment restores the initial phase composition in the fusion zone. As for the solid solution, the δ'(Al<sub>3</sub>Li) phase is formed at low copper contents, the δ'(Al<sub>3</sub>Li) and T<sub>1</sub>(Al<sub>2</sub>CuLi) phases are formed at average copper contents, and T<sub>1</sub>(Al<sub>2</sub>CuLi) phase is observed at high copper contents. Consequently, this makes it possible to improve the mechanical properties of weld joint specimens to match the numbers of the initial alloy.</p>\",\"PeriodicalId\":504,\"journal\":{\"name\":\"Bulletin of the Russian Academy of Sciences: Physics\",\"volume\":\"88 1 supplement\",\"pages\":\"S89 - S99\"},\"PeriodicalIF\":0.4800,\"publicationDate\":\"2025-01-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Russian Academy of Sciences: Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1062873824708857\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Russian Academy of Sciences: Physics","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1062873824708857","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
Study of the Evolution of the Phase Composition of Laser Welded Joints of Third-Generation Al–Li Alloys with the Use of Synchrotron Radiation
We studied the evolution of the phase composition of laser welded joints before and after heat treatment of 3rd generation Al–Li alloys using synchrotron radiation. The article demonstrates the fundamental role of the alloying elements of copper and lithium in formation of the phase composition of the fusion zone of the weld. It has been established that laser exposure changes the phase composition of the alloy. Namely, low copper contents mainly lead to formation of T2(Al6CuLi3) and T3(Al5CuLi3) phases, the average copper contents form T1(Al2CuLi), T2(Al6CuLi3), T3(Al5CuLi3) phases and the presence of high copper contents results in formation of T1(Al2CuLi) phase at the boundaries of dendrite. Post-heat treatment restores the initial phase composition in the fusion zone. As for the solid solution, the δ'(Al3Li) phase is formed at low copper contents, the δ'(Al3Li) and T1(Al2CuLi) phases are formed at average copper contents, and T1(Al2CuLi) phase is observed at high copper contents. Consequently, this makes it possible to improve the mechanical properties of weld joint specimens to match the numbers of the initial alloy.
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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