Microstructure, mechanical properties and corrosion resistance of laser surface melted EN353 low carbon low alloy steel

IF 1 4区工程技术 Q4 ENGINEERING, MECHANICAL International Journal of Surface Science and Engineering Pub Date : 2017-06-26 DOI:10.1504/IJSURFSE.2017.10005740

N. Sivanandham, A. Rajadurai, S. M. Shariff, J. Senthilselvan, A. Mahalingam

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引用次数: 3

Abstract

The efficacy of laser surface modification of EN353 low carbon low alloy steel is studied and discussed. The high power diode laser (HPDL) treated layers were characterised by means of high resolution scanning electron microscopy (HRSEM), and X-ray diffractometer (XRD). The mechanical properties like hardness, wear and corrosion resistance were studied. The hardness profile of the laser modified cross-sectional layer was determined by using Vickers hardness tester. It was found that the microhardness improved to as high as 493 HV as compared to 215 HV of the substrate material. The laser surface melting by the HPDL resulted of martensite and bainite microstructure in low carbon low alloy steel. XRD phase analysis indicated the formation of martensite, Fe-Mn-C, Fe-Cr-C and M23C6 carbide phases at near surface regions of laser treated samples. The wear resistance of the laser surface melted EN353 steel was also found to be increased. Potentiodynamic electrochemical corrosion method revealed an improved corrosion resistance in the laser treated layers.

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激光表面熔化EN353低碳低合金钢的组织、力学性能和耐蚀性

对激光表面改性EN353低碳低合金钢的效果进行了研究和探讨。采用高分辨率扫描电镜(HRSEM)和x射线衍射仪(XRD)对高功率二极管激光(HPDL)处理后的层进行了表征。对其硬度、耐磨性、耐腐蚀性等力学性能进行了研究。采用维氏硬度计测定激光改性截面层的硬度分布。显微硬度由基体材料的215 HV提高到493 HV。HPDL激光表面熔化使低碳低合金钢表面形成马氏体和贝氏体组织。XRD相分析表明，激光处理样品近表面形成马氏体、Fe-Mn-C、Fe-Cr-C和M23C6碳化物相。激光表面熔化后的EN353钢的耐磨性也有所提高。电位动力学电化学腐蚀方法表明，激光处理层的耐蚀性有所提高。

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来源期刊

International Journal of Surface Science and Engineering 工程技术-材料科学：膜

CiteScore

1.60

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： IJSurfSE publishes refereed quality papers in the broad field of surface science and engineering including tribology, but with a special emphasis on the research and development in friction, wear, coatings and surface modification processes such as surface treatment, cladding, machining, polishing and grinding, across multiple scales from nanoscopic to macroscopic dimensions. High-integrity and high-performance surfaces of components have become a central research area in the professional community whose aim is to develop highly reliable ultra-precision devices.