含BCC/B2共格结构多主元合金研究进展
Research progress in multi-principal element alloys containing coherent BCC/B2 structure
查看参考文献68篇
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文摘
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引入共格析出相是强化合金的重要方式。近年来发现在BCC结构多主元合金中引入共格B2相可有效提升其力学性能,形成了一类重要的合金体系。本文综述了含BCC/B2共格结构多主元合金的研究现状,重点讨论这一系列新型合金在成分、组织形貌、结构稳定性以及力学性能等方面的特征,并指出此类合金在宽温域下强度较高、塑性因成分差异而不同的变化特点。目前,这类合金在高于500℃时的结构稳定性较差,无法满足工程应用的需求,而成分设计是解决此问题较为简单易行的方法。本文旨在为含BCC/B2共格结构多主元合金的设计提供参考。 |
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其他语种文摘
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Introducing coherent precipitates is an important method to strengthen alloys.Recently,it is found that the introduction of coherent B2 phase in multi-principal element alloys with BCC structure can improve the mechanical properties significantly,developing a new class of important series alloys.The up-to-date knowledge of these alloys from the perspectives of composition, microstructure,phase stability,and mechanical properties was summarized.These alloys exhibit high yield strength over a wide temperature regime,but the ductility presents different characterization due to the compositional difference.At present,their engineering application is limited due to their weaker thermal stability at elevated temperature,especially above 500 ℃,and furthermore,the design of compositional content appears to be more easy method to resolve the problem.This paper aims at providing guidance to further design of multi-principal element alloys with coherent BCC/B2 dual-phases. |
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来源
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材料工程
,2021,49(2):1-9 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2020.000351
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关键词
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多主元合金
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共格相
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有序BCC相
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结构稳定性
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力学性能
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地址
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1.
北京理工大学材料学院, 北京, 100081
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北京理工大学前沿交叉科学研究院, 北京, 100081
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1001-4381 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金项目
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文献收藏号
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CSCD:6934474
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