首页|间隙原子及颗粒对激光增材制造高熵合金微观结构与力学性能影响的研究进展

间隙原子及颗粒对激光增材制造高熵合金微观结构与力学性能影响的研究进展

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近年来,高熵合金(HEAs)由于其独特的多主元设计理念和优异的性能获得了研究者的广泛关注.激光增材制造能够获得具有超细晶和多尺度结构的高熵合金,使其具有优异的力学性能.同时间隙原子的掺杂及增强颗粒的添加有助于进一步改善合金的强塑性,在航空航天高性能结构材料等领域应用前景开阔.基于此,首先介绍了选区激光熔化技术和激光定向能量沉积技术的原理和特点;然后,总结了间隙原子(C、B、N)及增强颗粒对激光增材制造高熵合金微观组织及力学性能的影响,并分析了各个间隙原子及增强颗粒对合金的强塑化机理;最后对激光增材制造高强塑性高熵合金的发展前景做了展望.
Research Progress on Influence of Interstitial Atoms and Particles on Microstructure and Mechanical Properties of Laser Additive Manufacturing High-Entropy Alloys
In recent years,high-entropy alloys(HEAs)have attracted extensive attention of researchers because of their unique design concept and excellent properties with multiple principal components.Laser additive manufacturing(LAM)can produce HEAs with ultrafine grain and multi-scale structure,accompanied with excellent mechanical properties.Moreover,the doping of interstitial atoms and the addition of reinforced particles are helpful to further improve the strength and plasticity of the alloy.It also has broad application prospects in aerospace high-performance structural materials and other fields.In this review,the principles and characteristics of selective laser melting and laser directed energy deposition are introduced firstly.Then,the effects of interstitial atoms(C,B,N)and reinforced particles on the microstructure and mechanical properties of HEAs fabricated by LAM are summarized.Additionally,the strengthening and plasticizing mechanism of each interstitial atom and reinforced particle is analyzed.Finally,the future development trend of LAM high-performance HEAs is prospected.

Laser additive manufacturing high-entropy alloysInterstitial atomsReinforced particlesMicrostructureMechanical property

高宏亮、苏海军、郭一诺、杨培鑫、夏乐、张卓、郭敏

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西北工业大学深圳研究院,深圳 518057

西北工业大学材料学院,西安 710072

激光增材制造高熵合金 间隙原子 增强颗粒 微观组织 力学性能

国家自然科学基金国家自然科学基金广东省基础与应用基础研究基金航空科学基金陕西省重点科技创新团队计划西安市科技计划中央高校基本科研业务费专项西北工业大学博士论文创新基金

52130204521743762021B1515120028202200420530012021TD-1721ZCZZHXJS-QCY6-005D5000230348CX2022033

2024

10.16080/j.issn1671-833x.2024.08.054

航空制造技术
北京航空制造工程研究所

航空制造技术

CSTPCD北大核心
影响因子：0.403
ISSN：1671-833X
年,卷(期)：2024.67(8)
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