Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere

Earlier studies have reported metastable hexagonal close packed (HCP) to face centered cubic (FCC) polymorphic transformation in elemental Ti and Zr as they are mechanically alloyed. This project was done to investigate the transformation in 50Ti-50Zr powder mixture and 50Ti-50Zr alloy was produced...

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Main Author: Wibowo, Anton.
Other Authors: Tay Bee Yen
Format: Final Year Project
Language:English
Published: 2009
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Online Access:http://hdl.handle.net/10356/16875
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-168752023-03-04T15:39:56Z Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere Wibowo, Anton. Tay Bee Yen School of Materials Science and Engineering A*STAR SIMTech DRNTU::Engineering Earlier studies have reported metastable hexagonal close packed (HCP) to face centered cubic (FCC) polymorphic transformation in elemental Ti and Zr as they are mechanically alloyed. This project was done to investigate the transformation in 50Ti-50Zr powder mixture and 50Ti-50Zr alloy was produced by solid state synthesis via mechanical alloying from elemental Ti and Zr powders. Using a combination of X-ray diffraction analysis, secondary electron microscopy techniques and differential thermal analysis, the mechanically induced solid-state reaction was studied. Results showed that FCC 50Ti-50Zr was obtained after being mechanically alloyed for 120 hours. The polymorphic transformation was similar to the elemental Ti and Zr. The average particle size generally decreased with increasing milling time, with an anomaly point at milling time = 20 hours. The crystalline size of 50Ti-50Zr decreased and lattice strain increased with increasing milling time. It was suggested that the transformation of 50Ti-50Zr is similar with the elemental Ti and Zr because of the complete solid solution formed when Ti and Zr form an alloy. The DTA for powder mixture before milling and after milling for 120 hours showed a shift in the exothermic transition peaks. Bachelor of Engineering (Materials Engineering) 2009-05-28T08:29:09Z 2009-05-28T08:29:09Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/16875 en Nanyang Technological University 56 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Wibowo, Anton.
Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
description Earlier studies have reported metastable hexagonal close packed (HCP) to face centered cubic (FCC) polymorphic transformation in elemental Ti and Zr as they are mechanically alloyed. This project was done to investigate the transformation in 50Ti-50Zr powder mixture and 50Ti-50Zr alloy was produced by solid state synthesis via mechanical alloying from elemental Ti and Zr powders. Using a combination of X-ray diffraction analysis, secondary electron microscopy techniques and differential thermal analysis, the mechanically induced solid-state reaction was studied. Results showed that FCC 50Ti-50Zr was obtained after being mechanically alloyed for 120 hours. The polymorphic transformation was similar to the elemental Ti and Zr. The average particle size generally decreased with increasing milling time, with an anomaly point at milling time = 20 hours. The crystalline size of 50Ti-50Zr decreased and lattice strain increased with increasing milling time. It was suggested that the transformation of 50Ti-50Zr is similar with the elemental Ti and Zr because of the complete solid solution formed when Ti and Zr form an alloy. The DTA for powder mixture before milling and after milling for 120 hours showed a shift in the exothermic transition peaks.
author2 Tay Bee Yen
author_facet Tay Bee Yen
Wibowo, Anton.
format Final Year Project
author Wibowo, Anton.
author_sort Wibowo, Anton.
title Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
title_short Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
title_full Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
title_fullStr Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
title_full_unstemmed Solid state synthesis of 50Ti-50Zr binary alloy by mechanical alloying in inert atmosphere
title_sort solid state synthesis of 50ti-50zr binary alloy by mechanical alloying in inert atmosphere
publishDate 2009
url http://hdl.handle.net/10356/16875
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