高熵合金跨尺度异构强韧化及其力学性能研究进展

doi:10.11900/0412.1961.2022.00322

金属学报

2022, Vol. 58

Issue (11): 1441-1458 DOI: 10.11900/0412.1961.2022.00322

综述

本期目录 | 过刊浏览

高熵合金跨尺度异构强韧化及其力学性能研究进展

安子冰¹, 毛圣成¹(

), 张泽¹^,², 韩晓东¹(

)

^1.北京工业大学材料与制造学部固体微结构与性能研究所北京 100124
^2.浙江大学材料科学与工程学院杭州 310058

Strengthening-Toughening Mechanism and Mechanical Properties of Span-Scale Heterostructure High-Entropy Alloy

AN Zibing¹, MAO Shengcheng¹(

), ZHANG Ze¹^,², HAN Xiaodong¹(

)

^1.Institute of Microstructure and Properties of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
^2.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China

引用本文:

安子冰, 毛圣成, 张泽, 韩晓东. 高熵合金跨尺度异构强韧化及其力学性能研究进展[J]. 金属学报, 2022, 58(11): 1441-1458.
Zibing AN, Shengcheng MAO, Ze ZHANG, Xiaodong HAN. Strengthening-Toughening Mechanism and Mechanical Properties of Span-Scale Heterostructure High-Entropy Alloy[J]. Acta Metall Sin, 2022, 58(11): 1441-1458.

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摘要:

高熵合金突破了传统合金设计理念的桎梏,具有高强度、高硬度、高耐磨性及抗腐蚀性,是一种具有巨大发展前景的新型金属材料。然而,金属材料的强度与塑性之间存在倒置矛盾关系,高熵合金仍受困于这一难题。因此,设计开发兼具高强度与高塑性的高熵合金材料已成为目前研究热点与难点。近年来,异构设计理念在传统金属材料强韧化这一问题上得到发展,如何设计异构高熵合金以实现高熵合金强韧化,使合金兼具高强度与高塑性,引起了科研人员的重视。本文从异构显微组织尺度出发,综述了目前存在的异构显微结构设计方法,分析了不同异构组织对其强韧化机制及力学性能的影响,并对未来高强韧高熵合金显微结构设计进行了展望。

关键词 ：高熵合金, 异构, 强韧化, 力学性能

Abstract：

High-entropy alloys overcome the limitations posed by traditional alloys due to features such as high strength, toughness, high wear resistance, and corrosion resistance. These alloys are novel metallic materials with excellent application potential; however, typically an inverse relationship is observed between the strength and ductility of a metal, which includes high-entropy alloys. Therefore, the design and development of high entropy alloys with high strength and high ductility have become a limitation in current research. Recently, heterostructure design has achieved great success in strengthening and toughening traditional metallic materials. Heterostructured and high-entropy alloys has garnered much attention and research interest to realize the strength and toughness of high-entropy alloys with high strength and high ductility. This study reviews the existing design models for heterostructures from the heterostructure scale perspective. Furthermore, the effects of different heterostructures on the strengthening and toughening mechanism and mechanical properties were analyzed, and future microstructural designs with high strength and toughness were anticipated.

Key words： high-entropy alloy heterostructure strengthening and toughening mechanical property

收稿日期: 2022-07-04

ZTFLH:

TG146

基金资助:国家重点研发计划项目(2021YFA1200201);国家自然科学基金项目(52071003);国家自然科学基金项目(91860202);国家自然科学基金项目(51988101);北京市科技新星计划交叉学科合作课题项目(Z211100002121170);北京学者项目(PXM2020_014204_000021);高等学校学科创新引智计划(111计划)项目(DB18015)

作者简介: 韩晓东, xdhan@bjut.edu.cn,主要从事高空间分辨原位显微学技术及科学装置研发及金属材料塑性变形行为研究
安子冰,男,1993年生,博士

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https://www.ams.org.cn/CN/10.11900/0412.1961.2022.00322 或 https://www.ams.org.cn/CN/Y2022/V58/I11/1441

图1 异构高熵合金与传统合金以及均质高熵合金材料的强度-塑性对比[25,34,43,46~48]

图2 CoCrFeNiMn、CoCrFeNiPd[38]和HfNbTaTiV[49]高熵合金成分分布与力学性能

图3 (HfNbTiZr)98O2高熵合金显微结构及力学性能[56]

图4 CoCrNi合金显微结构及力学性能[65]

图5 VCoNi合金显微结构及元素分布[39]

图6 (FeCoNi)86Al7Ti7高熵合金显微结构与室温拉伸力学性能[34]

图7 Al0.5Cr0.9FeNi2.5V0.2和HfNbTiV合金显微结构与拉伸力学性能[72,73]

图8 Ni32.8Fe21.9Co21.9Cr10.9Al7.5Ti5.0高熵合金显微结构与拉伸力学性能[74]

图9 CoCrFeNiMn高熵合金拉伸变形前后显微结构特征[84]

图10 Fe20Co20Ni41Al19高熵合金鱼骨状显微结构[35]

图11 CoCrNi合金晶粒异构显微结构及异构结构中的异构变形诱导硬化[46]

图12 Co21.5Cr21.5Fe21.5Mn21.5Ni14高熵合金经过RASP处理后的梯度组织[42]

图13 粗晶、表面机械研磨处理(SMAT)和SMAT +时效处理样品拉伸力学性能[92]

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