Effect of heat treatment on low carbon steel

This work was to investigating the corrosion behavior of low carbon steel in a salt solution of 3.5wt% NaCl after undergoing two different types of heat treatment at 960 °C in a furnace. The material of low carbon steel was cut into nine small pieces under three groups A, B and C, without heated...

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Main Author:	Mahmood, Raed Abdulameer
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/14965/1/Effect%20of%20heat%20treatment%20on%20low%20carbon%20steel.pdf
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spelling	my-utem-ep.149652022-04-05T14:32:36Z Effect of heat treatment on low carbon steel 2013 Mahmood, Raed Abdulameer TA Engineering (General). Civil engineering (General) This work was to investigating the corrosion behavior of low carbon steel in a salt solution of 3.5wt% NaCl after undergoing two different types of heat treatment at 960 °C in a furnace. The material of low carbon steel was cut into nine small pieces under three groups A, B and C, without heated annealing and hardening heat treatment respectively. The heat treatment was at temperature 960°C. The hardness of the sample as received will be 203 kg/mm2 while after hardening the hardness was increased. The sample was mounted using hot and cold mounting. The microstructure and surface morphology was observed by using Scanning Electron Microscope (SEM) and Optical Microscope (OM) after grinding, polishing and etching on the sample. In group A cementite can be observed clearly on pearlite on the surface before corrosion test. After four days soaking in 3.5 wt% NaCl solution was observed all cementite and pearlite will be transformed to austenite with the remnants of cementite make the surface unstable hence increases the initial corrosion. After four days soaking when the cementite is oxidized and a thick film of corrosion product covers the material surface. The formation of Martensite due to quenching and rapid cooling in group C sample increases the corrosion rate from 0.072 mpy to 0.302 due to decreased of corrosion potential from -572 m V to -639 m V after four days soaking. The corrosion rate of each sample was measured by using electrochemical polarization measurement and Tafel extrapolation technique. From previous result, it was observed that samples which had undergone annealing mode of heat treatment turned out to be the ones with the best corrosion resistance 2013 Thesis http://eprints.utem.edu.my/id/eprint/14965/ http://eprints.utem.edu.my/id/eprint/14965/1/Effect%20of%20heat%20treatment%20on%20low%20carbon%20steel.pdf text en public http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000085290 masters UTeM Faculty of Manufacturing Engineering
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Mahmood, Raed Abdulameer Effect of heat treatment on low carbon steel
description	This work was to investigating the corrosion behavior of low carbon steel in a salt solution of 3.5wt% NaCl after undergoing two different types of heat treatment at 960 °C in a furnace. The material of low carbon steel was cut into nine small pieces under three groups A, B and C, without heated annealing and hardening heat treatment respectively. The heat treatment was at temperature 960°C. The hardness of the sample as received will be 203 kg/mm2 while after hardening the hardness was increased. The sample was mounted using hot and cold mounting. The microstructure and surface morphology was observed by using Scanning Electron Microscope (SEM) and Optical Microscope (OM) after grinding, polishing and etching on the sample. In group A cementite can be observed clearly on pearlite on the surface before corrosion test. After four days soaking in 3.5 wt% NaCl solution was observed all cementite and pearlite will be transformed to austenite with the remnants of cementite make the surface unstable hence increases the initial corrosion. After four days soaking when the cementite is oxidized and a thick film of corrosion product covers the material surface. The formation of Martensite due to quenching and rapid cooling in group C sample increases the corrosion rate from 0.072 mpy to 0.302 due to decreased of corrosion potential from -572 m V to -639 m V after four days soaking. The corrosion rate of each sample was measured by using electrochemical polarization measurement and Tafel extrapolation technique. From previous result, it was observed that samples which had undergone annealing mode of heat treatment turned out to be the ones with the best corrosion resistance
format	Thesis
qualification_level	Master's degree
author	Mahmood, Raed Abdulameer
author_facet	Mahmood, Raed Abdulameer
author_sort	Mahmood, Raed Abdulameer
title	Effect of heat treatment on low carbon steel
title_short	Effect of heat treatment on low carbon steel
title_full	Effect of heat treatment on low carbon steel
title_fullStr	Effect of heat treatment on low carbon steel
title_full_unstemmed	Effect of heat treatment on low carbon steel
title_sort	effect of heat treatment on low carbon steel
granting_institution	UTeM
granting_department	Faculty of Manufacturing Engineering
publishDate	2013
url	http://eprints.utem.edu.my/id/eprint/14965/1/Effect%20of%20heat%20treatment%20on%20low%20carbon%20steel.pdf
_version_	1747833853819486208

Effect of heat treatment on low carbon steel

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