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The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys. / Sri Naga Pavan Addepalli

Swansea University Author: Sri Naga Pavan Addepalli

Abstract

"The research titled "The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys" deals with the use of heat treatment to change the characteristics of some commercial magnesium alloys. The alloys were first subjected to homogene...

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Published: 2011
Institution: Swansea University
Degree level: Master of Philosophy
Degree name: M.Phil
URI: https://cronfa.swan.ac.uk/Record/cronfa42579
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last_indexed 2019-10-21T16:48:05Z
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spelling 2018-08-16T14:39:02.9105634 v2 42579 2018-08-02 The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys. 4dbd2a6f4fec9be96e4279f36669301c NULL Sri Naga Pavan Addepalli Sri Naga Pavan Addepalli true true 2018-08-02 "The research titled "The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys" deals with the use of heat treatment to change the characteristics of some commercial magnesium alloys. The alloys were first subjected to homogeneous solution treatment and quenched in cold water in order to retain the homogeneous state of the material. Then the samples were aged at temperatures as suggested in the literature for different time periods. Their corrosion performance was then assessed using Time lapse photography, Hydrogen evolution experiment and Scanning Vibrating Electrode Technique (SVET). The data obtained from the time lapse photography was assessed using Sigma plot to characterize the corroded rate in terms of area (m.;2) over a period of time. The bulk corrosion rates by the amount ofhydrogen released was estimated volumetrically over a period of time. Finally the data obtained form the SVET analysis was assessed using Surfer to acquire the local current density rates due to corrosion. From the current density data, the approximate loss of material during SVET was estimated quantitatively. This thesis compares three different magnesium alloys, AZ31, AZ91 and Elektron 21 (E21). It was noticed that heat treatment changed the microstructural characteristics of the alloys which in turn affected the corrosion performance of those alloys. The results show that solution treatment was preferred for AZ31 and Elektron 21 alloy and age hardening for AZ91 alloy. It was also noticed that all the results obtained using various experimental techniques were similar to each other." E-Thesis Materials science. 31 12 2011 2011-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Master of Philosophy M.Phil 2018-08-16T14:39:02.9105634 2018-08-02T16:24:29.7278068 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Sri Naga Pavan Addepalli NULL 1 0042579-02082018162505.pdf 10805328.pdf 2018-08-02T16:25:05.5930000 Output 11631545 application/pdf E-Thesis true 2018-08-02T16:25:05.5930000 false
title The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
spellingShingle The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
Sri Naga Pavan Addepalli
title_short The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
title_full The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
title_fullStr The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
title_full_unstemmed The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
title_sort The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys.
author_id_str_mv 4dbd2a6f4fec9be96e4279f36669301c
author_id_fullname_str_mv 4dbd2a6f4fec9be96e4279f36669301c_***_Sri Naga Pavan Addepalli
author Sri Naga Pavan Addepalli
author2 Sri Naga Pavan Addepalli
format E-Thesis
publishDate 2011
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description "The research titled "The effect of thermal heat treatment on the corrosion performance of some commercial and advanced magnesium alloys" deals with the use of heat treatment to change the characteristics of some commercial magnesium alloys. The alloys were first subjected to homogeneous solution treatment and quenched in cold water in order to retain the homogeneous state of the material. Then the samples were aged at temperatures as suggested in the literature for different time periods. Their corrosion performance was then assessed using Time lapse photography, Hydrogen evolution experiment and Scanning Vibrating Electrode Technique (SVET). The data obtained from the time lapse photography was assessed using Sigma plot to characterize the corroded rate in terms of area (m.;2) over a period of time. The bulk corrosion rates by the amount ofhydrogen released was estimated volumetrically over a period of time. Finally the data obtained form the SVET analysis was assessed using Surfer to acquire the local current density rates due to corrosion. From the current density data, the approximate loss of material during SVET was estimated quantitatively. This thesis compares three different magnesium alloys, AZ31, AZ91 and Elektron 21 (E21). It was noticed that heat treatment changed the microstructural characteristics of the alloys which in turn affected the corrosion performance of those alloys. The results show that solution treatment was preferred for AZ31 and Elektron 21 alloy and age hardening for AZ91 alloy. It was also noticed that all the results obtained using various experimental techniques were similar to each other."
published_date 2011-12-31T03:53:14Z
_version_ 1763752641605664768
score 11.016481

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