{"title":"Fe-21Mn-10Al-5Ni-C低密度合金在连续冷却条件下的纳米沉淀行为","authors":"Xiao-Liang Jia, Gu-Hui Gao, Si-Cheng Jiang, Xiao-Lu Gui, Devesh Misra, Chun Feng, Feng-Ming Zhang","doi":"10.1007/s12598-024-03061-5","DOIUrl":null,"url":null,"abstract":"<div><p>Precipitation strengthening is a pivotal mechanism for enhancing the mechanical properties of low-density alloys. A detailed analysis of microstructural evolution during thermal processing is imperative to thoroughly understand its strengthening behavior. This study employed the Bähr D805L quenching dilatometer system to study the formation, evolution, and impact on the contribution of nano-precipitates on the mechanical behavior of Fe-21Mn-10Al-5Ni-C (nominal composition) low-density alloy during continuous cooling. The study unveiled the precipitation mechanism of nano-particles within the austenite (γ) matrix at cooling rates in the range of 40–0.1 °C·s<sup>−1</sup>. Moreover, the addition of Ni in Fe-21Mn-10Al-5Ni-C low-density alloy enhances the atomic size factor, promoting alloy spinodal decomposition and ordering. During slow cooling, B2 phases precipitate along grain boundaries, accompanied by the formation of a precipitation-free zone (PFZ) near the boundaries and the dissolution of some later nucleated small particles. These phenomena are a primary mechanism that suppresses the precipitation of B2 phases within the γ matrix.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3562 - 3574"},"PeriodicalIF":9.6000,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanoprecipitation behavior in Fe-21Mn-10Al-5Ni-C low-density alloy under continuous cooling conditions\",\"authors\":\"Xiao-Liang Jia, Gu-Hui Gao, Si-Cheng Jiang, Xiao-Lu Gui, Devesh Misra, Chun Feng, Feng-Ming Zhang\",\"doi\":\"10.1007/s12598-024-03061-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Precipitation strengthening is a pivotal mechanism for enhancing the mechanical properties of low-density alloys. A detailed analysis of microstructural evolution during thermal processing is imperative to thoroughly understand its strengthening behavior. This study employed the Bähr D805L quenching dilatometer system to study the formation, evolution, and impact on the contribution of nano-precipitates on the mechanical behavior of Fe-21Mn-10Al-5Ni-C (nominal composition) low-density alloy during continuous cooling. The study unveiled the precipitation mechanism of nano-particles within the austenite (γ) matrix at cooling rates in the range of 40–0.1 °C·s<sup>−1</sup>. Moreover, the addition of Ni in Fe-21Mn-10Al-5Ni-C low-density alloy enhances the atomic size factor, promoting alloy spinodal decomposition and ordering. During slow cooling, B2 phases precipitate along grain boundaries, accompanied by the formation of a precipitation-free zone (PFZ) near the boundaries and the dissolution of some later nucleated small particles. These phenomena are a primary mechanism that suppresses the precipitation of B2 phases within the γ matrix.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"44 5\",\"pages\":\"3562 - 3574\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2025-01-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12598-024-03061-5\",\"RegionNum\":1,\"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":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12598-024-03061-5","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Nanoprecipitation behavior in Fe-21Mn-10Al-5Ni-C low-density alloy under continuous cooling conditions
Precipitation strengthening is a pivotal mechanism for enhancing the mechanical properties of low-density alloys. A detailed analysis of microstructural evolution during thermal processing is imperative to thoroughly understand its strengthening behavior. This study employed the Bähr D805L quenching dilatometer system to study the formation, evolution, and impact on the contribution of nano-precipitates on the mechanical behavior of Fe-21Mn-10Al-5Ni-C (nominal composition) low-density alloy during continuous cooling. The study unveiled the precipitation mechanism of nano-particles within the austenite (γ) matrix at cooling rates in the range of 40–0.1 °C·s−1. Moreover, the addition of Ni in Fe-21Mn-10Al-5Ni-C low-density alloy enhances the atomic size factor, promoting alloy spinodal decomposition and ordering. During slow cooling, B2 phases precipitate along grain boundaries, accompanied by the formation of a precipitation-free zone (PFZ) near the boundaries and the dissolution of some later nucleated small particles. These phenomena are a primary mechanism that suppresses the precipitation of B2 phases within the γ matrix.
期刊介绍：
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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