High temperature oxidation behavior of spark plasma sintered WC-CoCrFeNiAl hard alloys

Zhu, Shigen; Hui, Jiaqi; Qin, Jiayu; Dong, Wen‐Kui

doi:10.1016/j.ijrmhm.2023.106157

Cited by 10 publications

(2 citation statements)

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“…Moreover, our previous research has demonstrated the exceptional mechanical properties of WC-10CoCrFeNiAl hard alloys. [25] Furthermore, the comprehensive mechanical properties of WC-Co hard alloys are contingent upon various factors including their composition, WC grain size (D WC ), morphology, preparation process, and other associated parameters. [26,27] Under identical composition, D WC exerts a significant influence on the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Effect of WC Particle Size on Microstructure and Mechanical Properties of WC‐10CoCrFeNiAl Composites

Hui,

Sun,

Zhou

et al. 2023

Adv Eng Mater

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The present study focuses on the synthesis of three distinct WC‐HEA hard alloys using the SPS method, employing three different grades of tungsten carbide with varying particle sizes. Subsequently, an investigation was conducted to analyze the influence of WC particle size on the microstructure and properties of WC‐10CoCrFeNiAl hard alloys. Additionally, the dual‐scale WC‐10CoCrFeNiAl hard alloy was synthesized through a combination of two distinct WC particles, and an investigation was conducted to assess the influence of small particle size WC addition content on both the microstructure and properties of this advanced alloy. The results indicate that a reduction in the particle size of WC leads to an increase in hardness, while exhibiting a non‐monotonic change in fracture toughness of WC‐10CoCrFeNiAl hard alloy. The presence of smaller WC particles promotes the formation of N7C3 and η phase (M3W9C4), which compromises its toughness while simultaneously enhancing its hardness. The mechanical properties are optimized when the particle size of WC is approximately 1μm (HV30:17.96 GPa, KIC:12.3 MPa.m1/2). Investigation on the dual‐scale WC‐10CoCrFeNiAl hard alloy further reveals that the incorporation of fine WC particles significantly enhances hardness while compromising fracture toughness. When the content of small particle WC reaches 25 wt.%, the mechanical properties of the dual‐scale hard alloy are optimized (HV30:18.8 GPa, KIC:11.1 MPa.m1/2).This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

“…Moreover, our previous research has demonstrated the exceptional mechanical properties of WC‐10CoCrFeNiAl hard alloys. [ 25 ]…”

Section: Introductionmentioning

confidence: 99%