TiB2在选择性激光熔化TiB2 p /CrCoFeNiMn高熵复合材料组织优化和耐磨性提高中的复合作用

IF 8.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Letters Pub Date : 2023-10-27 DOI:10.1080/21663831.2023.2272805

Zhao Chen, Xiaoli Wen, Weili Wang, Xin Lin, Haiou Yang, Lianyang Chen, Haibin Wu, Wenhui Li, Nan Li

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引用次数: 0

摘要

采用选择性激光熔化法制备了CoCrFeNiMn高熵合金和TiB2p/CoCrFeNiMn高熵复合材料(HEC)。对于CoCrFeNiMn，产生了具有强晶体织构的粗糙外延柱状微观结构。而在TiB2p/CoCrFeNiMn中，TiB2颗粒分布在明显细化的枝晶和近等轴晶中，并发生相变形成σ相。TiB2相和σ相与基体形成了很强的界面关系。TiB2p/CoCrFeNiMn HEC具有极高的显微硬度(329±2 HV)和优异的耐磨性(摩擦系数0.31±0.02)。从组织、成分和硬度等方面研究了HEC的磨损机理。

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Compositive role of TiB ₂ in microstructure optimization and wear-resistant improvement of selective-laser-melted TiB2 _p /CrCoFeNiMn high-entropy composite

The CoCrFeNiMn high-entropy alloy and TiB2p/CoCrFeNiMn high-entropy composite (HEC) were manufactured by Selective laser melting. For the CoCrFeNiMn, a coarse epitaxial columnar microstructure with strong crystallographic textures was generated. While in the TiB2p/CoCrFeNiMn, TiB2 particles are distributed in the significantly refined dendrites and nearly equiaxial grains, and phase transformation occurs to form σ phase. TiB2 and σ phase construct a strong interface relationship with the matrix. TiB2p/CoCrFeNiMn HEC has extremely high microhardness (329 ± 2 HV) and excellent wear resistance (coefficients of friction 0.31 ± 0.02). The wear mechanism of the HEC was studied refer to the microstructure, composition and hardness.

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来源期刊

Materials Research Letters Materials Science-General Materials Science

CiteScore

12.10

自引率

3.60%

发文量

审稿时长

3.3 months

期刊介绍： Materials Research Letters is a high impact, open access journal that focuses on the engineering and technology of materials, materials physics and chemistry, and novel and emergent materials. It supports the materials research community by publishing original and compelling research work. The journal provides fast communications on cutting-edge materials research findings, with a primary focus on advanced metallic materials and physical metallurgy. It also considers other materials such as intermetallics, ceramics, and nanocomposites. Materials Research Letters publishes papers with significant breakthroughs in materials science, including research on unprecedented mechanical and functional properties, mechanisms for processing and formation of novel microstructures (including nanostructures, heterostructures, and hierarchical structures), and the mechanisms, physics, and chemistry responsible for the observed mechanical and functional behaviors of advanced materials. The journal accepts original research articles, original letters, perspective pieces presenting provocative and visionary opinions and views, and brief overviews of critical issues.