An investigation on electrical discharge metal matrix coating of ZE41A magnesium alloy

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING Metallurgical Research & Technology Pub Date : 2021-01-01 DOI:10.1051/METAL/2021034

U. Elaiyarasan, V. Satheeshkumar, C. Senthilkumar

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引用次数: 5

Abstract

The present paper studied the experimental investigation on electrical discharge coating of ZE41A magnesium alloy (EDC) with tungsten carbide-copper (WC/Cu) powder metallurgy (PM) electrode. In order to attain the surface characteristics, three parameters were selected such as compaction load, current and pulse on time. Response characteristics such as material transfer rate (MTR) and surface roughness (Ra) were considered in this study. Central composite design in response surface methodology was applied to conduct experiments. Empirical models were developed for MTR and SR. AVOVA test was conducted to identify the most influence parameters. Additionally, optimized parameters were identified by response surface optimizer. It is observed that the current play a vital role in increasing the MTR and minimize the SR of the coated surface followed by compaction load and pulse on time. Various studies such as scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were carried out on the coated surface. Bulk mass deposition and bigger craters were observed in the surface coated with 150 MPa and 3A respectively.

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ZE41A镁合金放电金属基体涂层的研究

采用碳化钨-铜(WC/Cu)粉末冶金(PM)电极对ZE41A镁合金(EDC)进行了放电涂层的实验研究。为了获得表面特性，选取了压实载荷、电流和脉冲接通时间三个参数。响应特性，如材料传输速率(MTR)和表面粗糙度(Ra)在本研究中被考虑。采用响应面法中的中心复合设计进行试验。建立了MTR和sr的实证模型，并进行了AVOVA检验，以确定影响最大的参数。利用响应面优化器对优化参数进行了辨识。结果表明，电流对提高涂层表面的MTR和减小涂层表面的SR起着至关重要的作用，其次是压实载荷和脉冲准时。对涂层表面进行了扫描电镜(SEM)和能谱分析(EDS)等研究。在150mpa和3A的涂层表面分别观察到大量的物质沉积和较大的陨石坑。

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.