Microstructure and wear property of (TiN + NbC) double ceramic phase-reinforced in FeCrNiCoAl high-entropy alloy coating fabricated by laser cladding

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-19 DOI:10.1016/j.ceramint.2024.09.248

Jitai Han , Sida Tang , Jiahui Guan , Yuyi Mao , Kui Zhu , Yin Li , Peng Li

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引用次数: 0

Abstract

This study delves into the influence of TiN and NbC ceramic particles on the phase structure, grain organization, microhardness, and wear resistance of FeCoNiCrAl High-Entropy Alloy (HEA) composite coatings produced through laser cladding. The integration of ceramic particles induced a dual BCC solid-solution phase structure (B2+BCC), with the formation of a TiNb phase upon the melting and interaction of TiN and NbC in the melt pool. The ceramic particles significantly modified the grain structure of the HEA coatings, disrupting the Columnar-to-Equiaxed Transition (CET) and favoring the emergence of equiaxed grains. The TiN particles induced a substantial refinement of grain size, albeit unevenly, while NbC had a milder effect. The combined presence of TiN and NbC particles resulted in a more uniform grain refinement, enhancing the mechanical properties of the coatings. Notably, the (TiN + NbC)/HEAs composite coating demonstrated superior mechanical performance under the synergistic effect of both ceramic particles. The average microhardness value increased by 55.80 % compared to 17-4Ph stainless steel, and the wear rate was reduced by 88.38 %, with the wear mechanism primarily involving abrasive and oxidative wear.

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激光熔覆制造的（TiN + NbC）双陶瓷相增强铁铬镍钴铝高熵合金涂层的显微结构和磨损性能

本研究深入探讨了 TiN 和 NbC 陶瓷颗粒对通过激光熔覆生产的 FeCoNiCrAl 高熵合金 (HEA) 复合涂层的相结构、晶粒组织、显微硬度和耐磨性的影响。陶瓷颗粒的加入诱导了双 BCC 固溶相结构（B2+BCC），熔池中的 TiN 和 NbC 熔化和相互作用后形成了 TiNb 相。陶瓷颗粒极大地改变了 HEA 涂层的晶粒结构，破坏了柱状到等轴状转变 (CET)，有利于等轴晶粒的出现。TiN 颗粒导致了晶粒尺寸的大幅细化，尽管细化不均匀，而 NbC 的影响则较为温和。TiN 和 NbC 颗粒的共同存在使晶粒细化更加均匀，从而提高了涂层的机械性能。值得注意的是，在两种陶瓷颗粒的协同作用下，（TiN+NbC）/HEAs 复合涂层表现出了卓越的机械性能。与 17-4Ph 不锈钢相比，平均显微硬度值提高了 55.80%，磨损率降低了 88.38%，磨损机制主要包括磨料磨损和氧化磨损。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.