J.G. Jeon , S.J. Lee , J.-B. Kim , J.H. Jeon , J.H. Shin , S.E. Shin , D.H. Bae
{"title":"原位亚微米 Al3Ti 粒子对 Al-Zn-Mg-Cu 基合金晶粒细化和强化的影响","authors":"J.G. Jeon , S.J. Lee , J.-B. Kim , J.H. Jeon , J.H. Shin , S.E. Shin , D.H. Bae","doi":"10.1016/j.msea.2024.147500","DOIUrl":null,"url":null,"abstract":"<div><div>Extensive research has been conducted to improve the efficiency for grain refinement of aluminum cast alloys. Herein, we propose a novel strategy to significantly reduce the cast grain size using in-situ submicron Al<sub>3</sub>Ti particles. The ZnO nanoparticles with enhanced wettability via mechanical stirring process provide finely dispersed <span><math><mrow><mi>α</mi></mrow></math></span>-Al<sub>2</sub>O<sub>3</sub> particles, which serve as heterogeneous nucleation sites for primary Al<sub>3</sub>Ti particles. A large number of primary Al<sub>3</sub>Ti nuclei are formed from the <span><math><mrow><mi>α</mi></mrow></math></span>-Al<sub>2</sub>O<sub>3</sub> particles without coarsening even under a relatively slow cooling rate. As a consequence, the size of Al<sub>3</sub>Ti particles was reduced to approximately 600 nm, resulting in the fine cast grain size of approximately 20 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>. Furthermore, a sheet made of the refined cast alloy has reduced recrystallized grain size and simultaneously improved strength and ductility.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147500"},"PeriodicalIF":6.1000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of in-situ submicron Al3Ti particles on grain refinement and strengthening of Al–Zn–Mg–Cu-based alloy\",\"authors\":\"J.G. Jeon , S.J. Lee , J.-B. Kim , J.H. Jeon , J.H. Shin , S.E. Shin , D.H. Bae\",\"doi\":\"10.1016/j.msea.2024.147500\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Extensive research has been conducted to improve the efficiency for grain refinement of aluminum cast alloys. Herein, we propose a novel strategy to significantly reduce the cast grain size using in-situ submicron Al<sub>3</sub>Ti particles. The ZnO nanoparticles with enhanced wettability via mechanical stirring process provide finely dispersed <span><math><mrow><mi>α</mi></mrow></math></span>-Al<sub>2</sub>O<sub>3</sub> particles, which serve as heterogeneous nucleation sites for primary Al<sub>3</sub>Ti particles. A large number of primary Al<sub>3</sub>Ti nuclei are formed from the <span><math><mrow><mi>α</mi></mrow></math></span>-Al<sub>2</sub>O<sub>3</sub> particles without coarsening even under a relatively slow cooling rate. As a consequence, the size of Al<sub>3</sub>Ti particles was reduced to approximately 600 nm, resulting in the fine cast grain size of approximately 20 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>. Furthermore, a sheet made of the refined cast alloy has reduced recrystallized grain size and simultaneously improved strength and ductility.</div></div>\",\"PeriodicalId\":385,\"journal\":{\"name\":\"Materials Science and Engineering: A\",\"volume\":\"919 \",\"pages\":\"Article 147500\"},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2024-11-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering: A\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S092150932401431X\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: A","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S092150932401431X","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of in-situ submicron Al3Ti particles on grain refinement and strengthening of Al–Zn–Mg–Cu-based alloy
Extensive research has been conducted to improve the efficiency for grain refinement of aluminum cast alloys. Herein, we propose a novel strategy to significantly reduce the cast grain size using in-situ submicron Al3Ti particles. The ZnO nanoparticles with enhanced wettability via mechanical stirring process provide finely dispersed -Al2O3 particles, which serve as heterogeneous nucleation sites for primary Al3Ti particles. A large number of primary Al3Ti nuclei are formed from the -Al2O3 particles without coarsening even under a relatively slow cooling rate. As a consequence, the size of Al3Ti particles was reduced to approximately 600 nm, resulting in the fine cast grain size of approximately 20 . Furthermore, a sheet made of the refined cast alloy has reduced recrystallized grain size and simultaneously improved strength and ductility.
期刊介绍:
Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.