高熵合金在焊接领域的应用研究现状
Application research status of high-entropy alloys in welding field
查看参考文献81篇
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文摘
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高熵合金由于其新颖的设计理念及特殊性能,成为材料科学领域内新的研究热点。目前高熵合金的研究与应用还主要局限在材料的制备与合成方面,随着其在工业领域的广泛应用,必然涉及高熵合金在焊接领域的研究。本文从高熵合金同种材料的焊接、高熵合金和异种材料之间的焊接以及高熵合金作为填充材料进行异种材料之间的焊接三个方面展开叙述,重点分析焊接方法、高熵合金组分、焊接初始状态及焊接参数等因素对接头组织和性能的影响,特别在高熵合金作为填充材料时,利用高熵效应和迟滞扩散效应进行的界面调控尤为重要;对不同制备方法下的高熵合金涂层进行细致分析,介绍熔覆工艺、添加微量元素以及后热处理的影响,着重对比激光熔覆工艺下高熵合金涂层的耐磨性;通过对高熵合金在焊接领域的研究与应用进行总结,提出目前存在的问题主要是尚未建立高熵合金体系和焊接工艺间的对应标准及阐明缺陷的形成机理;并对未来高熵合金在焊接领域的重点研究方向进行了展望。 |
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其他语种文摘
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Owing to novel design concepts and their unique properties, high-entropy alloy (HEA) has become a hot topic in material science. At present, the studies and applications of high-entropy alloy are still mainly limited to the preparation and synthesis of materials. With its wide application in industry, it must involve the research of high-entropy alloy in welding field. This paper describes the welding of high-entropy alloy with the same material, welding between high-entropy alloy and dissimilar material, and welding between dissimilar material with high-entropy alloy as filler material. The paper focuses on analyzing the welding method, high entropy alloy components, the initial state of welding and welding parameters, and other factors on the joint organization and properties. While the high-entropy alloy is mainly applied as filler material, the high entropy effect and hysteresis diffusion effect for interface controlling are particularly important. Finally, the high-entropy alloy coatings under different preparation methods are analyzed in detail, introducing the cladding process, the addition of microelements, the effect of post-heat treatment, and comparing the wear resistance high-entropy alloy coatings under the laser melting process. By summarizing the research and application of high-entropy alloy in the welding field, it is pointed out that the current problems are that the corresponding standard between highentropy alloy system and welding process has not been established and the formation mechanism of defects has not been clarified. The future research directions of high entropy alloy in welding field are proposed. |
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来源
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航空材料学报
,2022,42(5):1-14 【核心库】
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DOI
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10.11868/j.issn.1005-5053.2022.000046
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关键词
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高熵合金
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高熵效应
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焊接
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填充材料
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涂层
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地址
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1.
哈尔滨工业大学, 先进焊接与连接国家重点实验室, 哈尔滨, 150001
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江苏大学材料科学与工程学院, 江苏, 镇江, 212013
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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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1005-5053 |
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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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先进焊接与连接国家重点实验室开放课题基金
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文献收藏号
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CSCD:7324942
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