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Effect of Nitriding Temperature on Duplex Stainless Steel

Mohd Ghazi, Nurhafiza (2011) Effect of Nitriding Temperature on Duplex Stainless Steel. Universiti Teknologi Petronas. (Unpublished)

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Abstract

This project discussed about the project titled Effect of Nitriding Temperature of Duplex Stainless Steel. This report consisted of the project's background, objectives, and problem statements, scope of work, literature review, methodology or the flow of the project, result & discussion and last but not least the conclusion. In this work the author report a study of the surface modification and hardness improvement of duplex stainless steel (DSS) nitride by nitrogen gaseous have been conducted in a horizontal tube furnace at four different temperatures. Nitriding is one of the traditional thermochemical treatments for surface engineering that can be utilized in order to harden the duplex stainless steel surface to resist any failure. In order to conduct the nitriding process, it is crucial to highlight the important of its variables such as time, temperature and gas veloeity. This is beeause, all these variables have contribute each significance effect especially in terms of the nitriding process itself and the effect of mechanical properties of the samples. However, for this project, the author have investigated and identified the effect of utilizing variations of nitriding temperatures in order to improve and enhance the strength and hardness of the duplex stainless steel. Therefore, the result of before and after being nitride of the samples have been observed for different temperatures. This objective have been achieved by a series of laboratory tests such as metallographic study, and XRD examination and assessment of the sample's hardness using Vickers Microhardness Testing after the treatment were performed to examine the result of the treatment. The sample's microstructures have been examined by using Scanning Electron Microscopy with Energy Dispersive X-ray Spectrometry (SEM-EDX). Results of these laboratory tests have been used to analyze both of the strength and microstructures of the samples. The result showed that there is markedly effect of nitriding temperatures to both strength and microstructures of samples. As the nitriding temperature increased, the hardness of samples also increased. Last but not least, the objectives of this work have been achieved successfully.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Corrosion engineering - Degradation of materials due to temperature, stress and environment
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:49
Last Modified: 25 Jan 2017 09:41
URI: http://utpedia.utp.edu.my/id/eprint/7312

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