Effect of In Situ NbC-Cr[sub.7]C[sub.3]@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel
A novel graphene-coated nanocrystalline ceramic particle, iron-based composite inoculant was developed in this study to optimize the as-cast microstructure and mechanical properties of W18Cr4V high-speed steel (HSS). The effects of the composite inoculant on the microstructure, crystal structure, an...
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creator | Bai, Lina Zheng, Guixing Zhang, Lijie Liu, Shuangjin Xu, Laichun Zheng, Haowen Liu, Jie |
description | A novel graphene-coated nanocrystalline ceramic particle, iron-based composite inoculant was developed in this study to optimize the as-cast microstructure and mechanical properties of W18Cr4V high-speed steel (HSS). The effects of the composite inoculant on the microstructure, crystal structure, and mechanical properties of HSS were analyzed using transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The (002-) and (020) crystal planes of the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases, respectively, were collinear at two points in the reciprocal space, indicating a coherent relationship between the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases in the tempered modified HSS. This contributed to an improved non-uniform nucleation rate and refining of the HSS grains. The mechanical properties of the modified steel exhibited a general improvement. Specifically, the modification treatment enhanced the hardness of HSS from HRC 63.2 to 66.4 and the impact toughness by 48.3%. |
doi_str_mv | 10.3390/ma17050976 |
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The effects of the composite inoculant on the microstructure, crystal structure, and mechanical properties of HSS were analyzed using transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The (002-) and (020) crystal planes of the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases, respectively, were collinear at two points in the reciprocal space, indicating a coherent relationship between the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases in the tempered modified HSS. This contributed to an improved non-uniform nucleation rate and refining of the HSS grains. The mechanical properties of the modified steel exhibited a general improvement. Specifically, the modification treatment enhanced the hardness of HSS from HRC 63.2 to 66.4 and the impact toughness by 48.3%.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma17050976</identifier><language>eng</language><publisher>MDPI AG</publisher><subject>Hardness ; Mechanical properties ; Specialty steels</subject><ispartof>Materials, 2024-02, Vol.17 (5)</ispartof><rights>COPYRIGHT 2024 MDPI AG</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Bai, Lina</creatorcontrib><creatorcontrib>Zheng, Guixing</creatorcontrib><creatorcontrib>Zhang, Lijie</creatorcontrib><creatorcontrib>Liu, Shuangjin</creatorcontrib><creatorcontrib>Xu, Laichun</creatorcontrib><creatorcontrib>Zheng, Haowen</creatorcontrib><creatorcontrib>Liu, Jie</creatorcontrib><title>Effect of In Situ NbC-Cr[sub.7]C[sub.3]@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel</title><title>Materials</title><description>A novel graphene-coated nanocrystalline ceramic particle, iron-based composite inoculant was developed in this study to optimize the as-cast microstructure and mechanical properties of W18Cr4V high-speed steel (HSS). The effects of the composite inoculant on the microstructure, crystal structure, and mechanical properties of HSS were analyzed using transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The (002-) and (020) crystal planes of the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases, respectively, were collinear at two points in the reciprocal space, indicating a coherent relationship between the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases in the tempered modified HSS. This contributed to an improved non-uniform nucleation rate and refining of the HSS grains. The mechanical properties of the modified steel exhibited a general improvement. 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The effects of the composite inoculant on the microstructure, crystal structure, and mechanical properties of HSS were analyzed using transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The (002-) and (020) crystal planes of the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases, respectively, were collinear at two points in the reciprocal space, indicating a coherent relationship between the Fe[sub.3]C and Cr[sub.7]C[sub.3] phases in the tempered modified HSS. This contributed to an improved non-uniform nucleation rate and refining of the HSS grains. The mechanical properties of the modified steel exhibited a general improvement. Specifically, the modification treatment enhanced the hardness of HSS from HRC 63.2 to 66.4 and the impact toughness by 48.3%.</abstract><pub>MDPI AG</pub><doi>10.3390/ma17050976</doi></addata></record> |
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source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry; PubMed Central Open Access |
subjects | Hardness Mechanical properties Specialty steels |
title | Effect of In Situ NbC-Cr[sub.7]C[sub.3]@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel |
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