Haojun Zhuo , Debin Zheng , Chen Yang , Yihui Guo , Jiajia Han , Cuiping Wang , Xingjun Liu
{"title":"L12纳米颗粒增强综合性能优异的Ni-Co-Al-Ta基高温合金的研制","authors":"Haojun Zhuo , Debin Zheng , Chen Yang , Yihui Guo , Jiajia Han , Cuiping Wang , Xingjun Liu","doi":"10.1016/j.intermet.2025.109007","DOIUrl":null,"url":null,"abstract":"<div><div>This study addresses a critical research gap by pioneering a systematic alloy design in the Co-Ni-Al-Ta system, leveraging a thermodynamic database and CALPHAD method to optimize Ni content, leading to the development of a novel Co-45Ni-12Al-4Ta-2W superalloy with exceptional properties. Key innovations include the identification of an optimal Co-45Ni-12Al-4Ta master alloy and comprehensive analysis of γ′-forming elements (Mo, V, W, Ti, Nb), which revealed that W addition achieves an optimal balance between different properties: intermediate γ′/γ misfit (1.08 %) and low coarsening rate ((1.07 ± 0.07) × 10<sup>−27</sup> m<sup>3</sup>/s), coupled with unprecedented thermal stability (γ′ solvus at 1250 °C and solidus at 1372 °C). Remarkably, this alloy demonstrates anomalous strengthening at 650 °C, yielding compressive strengths of 1059 ± 32 MPa (RT), 1060 ± 31 MPa (650 °C), and 668 ± 21 MPa (900 °C), highlighting its potential for next-generation aerospace materials through further optimization.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"187 ","pages":"Article 109007"},"PeriodicalIF":4.8000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of L12 nanoparticles strengthened Ni-Co-Al-Ta based superalloys with excellent comprehensive properties\",\"authors\":\"Haojun Zhuo , Debin Zheng , Chen Yang , Yihui Guo , Jiajia Han , Cuiping Wang , Xingjun Liu\",\"doi\":\"10.1016/j.intermet.2025.109007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study addresses a critical research gap by pioneering a systematic alloy design in the Co-Ni-Al-Ta system, leveraging a thermodynamic database and CALPHAD method to optimize Ni content, leading to the development of a novel Co-45Ni-12Al-4Ta-2W superalloy with exceptional properties. Key innovations include the identification of an optimal Co-45Ni-12Al-4Ta master alloy and comprehensive analysis of γ′-forming elements (Mo, V, W, Ti, Nb), which revealed that W addition achieves an optimal balance between different properties: intermediate γ′/γ misfit (1.08 %) and low coarsening rate ((1.07 ± 0.07) × 10<sup>−27</sup> m<sup>3</sup>/s), coupled with unprecedented thermal stability (γ′ solvus at 1250 °C and solidus at 1372 °C). Remarkably, this alloy demonstrates anomalous strengthening at 650 °C, yielding compressive strengths of 1059 ± 32 MPa (RT), 1060 ± 31 MPa (650 °C), and 668 ± 21 MPa (900 °C), highlighting its potential for next-generation aerospace materials through further optimization.</div></div>\",\"PeriodicalId\":331,\"journal\":{\"name\":\"Intermetallics\",\"volume\":\"187 \",\"pages\":\"Article 109007\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2025-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Intermetallics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0966979525003723\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Intermetallics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966979525003723","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Development of L12 nanoparticles strengthened Ni-Co-Al-Ta based superalloys with excellent comprehensive properties
This study addresses a critical research gap by pioneering a systematic alloy design in the Co-Ni-Al-Ta system, leveraging a thermodynamic database and CALPHAD method to optimize Ni content, leading to the development of a novel Co-45Ni-12Al-4Ta-2W superalloy with exceptional properties. Key innovations include the identification of an optimal Co-45Ni-12Al-4Ta master alloy and comprehensive analysis of γ′-forming elements (Mo, V, W, Ti, Nb), which revealed that W addition achieves an optimal balance between different properties: intermediate γ′/γ misfit (1.08 %) and low coarsening rate ((1.07 ± 0.07) × 10−27 m3/s), coupled with unprecedented thermal stability (γ′ solvus at 1250 °C and solidus at 1372 °C). Remarkably, this alloy demonstrates anomalous strengthening at 650 °C, yielding compressive strengths of 1059 ± 32 MPa (RT), 1060 ± 31 MPa (650 °C), and 668 ± 21 MPa (900 °C), highlighting its potential for next-generation aerospace materials through further optimization.
期刊介绍:
This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.