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等离子转移弧粉末堆焊制备的复合Fe-Cr-V-C涂层

Composite Fe-Cr-V-C Coatings Prepared by Plasma Transferred-Arc Powder Surfacing.

作者信息

Zhang Xin, Liu Yong, Cheng Huichao, Li Kun, Qian Cheng, Li Wei

机构信息

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.

出版信息

Materials (Basel). 2023 Jul 18;16(14):5059. doi: 10.3390/ma16145059.

DOI:10.3390/ma16145059
PMID:37512333
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10385250/
Abstract

In this study, we developed composite Fe-Cr-V-C coatings by plasma transferred-arc (PTA) powder surfacing on a 42CrMo steel substrate. The effects of arc current and ion gas flow rate on the coatings' microstructure, hardness, and bonding performance were investigated. During the surfacing process, VxCy,M7C3M=Fe,Cr and other hard phases are in-situ generated throughout the entire PTA powder surfacing. These phases are uniformly distributed in the Fe matrix through precipitation and dispersion strengthening, yielding a surface hardness of up to 64.1 HRC. Also, the bonding performance between the substrate and coatings was evaluated by measuring the tensile strength, revealing that strong metallurgical bonds are formed, reaching a strength greater than 811 MPa.

摘要

在本研究中，我们通过等离子转移弧（PTA）粉末堆焊在42CrMo钢基体上制备了复合Fe-Cr-V-C涂层。研究了电弧电流和离子气体流量对涂层微观结构、硬度和结合性能的影响。在堆焊过程中，VxCy、M7C3（M=Fe、Cr）等硬质相在整个PTA粉末堆焊过程中原位生成。这些相通过沉淀和弥散强化均匀分布在铁基体中，表面硬度高达64.1 HRC。此外，通过测量拉伸强度评估了基体与涂层之间的结合性能，结果表明形成了牢固的冶金结合，强度大于811 MPa。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1c5a/10385250/ed3ccc4d4cd0/materials-16-05059-g019.jpg
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本文引用的文献

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Comparative Analysis of Laser and Plasma Surfacing by Nickel-Based Superalloy of Heat Resistant Steel.耐热钢镍基高温合金激光与等离子堆焊的对比分析
Materials (Basel). 2020 May 21;13(10):2367. doi: 10.3390/ma13102367.
3
The Role of Distribution Forms of Fe-Cr-C Cladding Layer in the Impact Abrasive Wear Performance of Hadfield Steel.
Fe-Cr-C熔覆层的分布形式对高锰钢冲击磨料磨损性能的影响
Materials (Basel). 2020 Apr 12;13(8):1818. doi: 10.3390/ma13081818.