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Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide

The microstructure and room to high temperature mechanical properties of binary, Ti-48at.%Al and beta phase contained, Ti-48at.%Al-4at.%Cr as-cast gamma titanium aluminide were investigated. Microstructural examination indicates that there is no significant difference between the microstructure of b...

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Main Authors: Hamzah, E., Kanniah, M., Harun, M.
Format: Article
Published: Taylor & Francis 2009
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/13537/
http://dx.doi.org/10.1080/15376490802710753
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spelling my.utm.135372011-08-09T01:20:51Z http://eprints.utm.my/id/eprint/13537/ Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide Hamzah, E. Kanniah, M. Harun, M. TJ Mechanical engineering and machinery The microstructure and room to high temperature mechanical properties of binary, Ti-48at.%Al and beta phase contained, Ti-48at.%Al-4at.%Cr as-cast gamma titanium aluminide were investigated. Microstructural examination indicates that there is no significant difference between the microstructure of both alloys except the formation of beta phase in Ti-48at.%Al-4at.%Cr. Room temperature fracture strength and ductility were obtained from tensile test. The tensile fracture surfaces were examined using scanning electron microscope in secondary electron mode. Constant load tensile creep tests were performed at 600-800C with initial stresses from 150 to 180 MPa. Mechanical properties of Ti-48at.%Al-4at.%Cr and Ti-48at.%Al were compared. The role of beta phase was discussed. It is concluded that beta phase is sensitive to temperature and detrimental at both room and high temperature. However, it has a positive effect on mechanical properties at intermediate temperatures. Taylor & Francis 2009 Article PeerReviewed Hamzah, E. and Kanniah, M. and Harun, M. (2009) Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide. Mechanics of Advanced Materials and Structures, 16 (5). pp. 384-389. ISSN 1537-6494 http://dx.doi.org/10.1080/15376490802710753 doi:10.1080/15376490802710753
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Hamzah, E.
Kanniah, M.
Harun, M.
Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
description The microstructure and room to high temperature mechanical properties of binary, Ti-48at.%Al and beta phase contained, Ti-48at.%Al-4at.%Cr as-cast gamma titanium aluminide were investigated. Microstructural examination indicates that there is no significant difference between the microstructure of both alloys except the formation of beta phase in Ti-48at.%Al-4at.%Cr. Room temperature fracture strength and ductility were obtained from tensile test. The tensile fracture surfaces were examined using scanning electron microscope in secondary electron mode. Constant load tensile creep tests were performed at 600-800C with initial stresses from 150 to 180 MPa. Mechanical properties of Ti-48at.%Al-4at.%Cr and Ti-48at.%Al were compared. The role of beta phase was discussed. It is concluded that beta phase is sensitive to temperature and detrimental at both room and high temperature. However, it has a positive effect on mechanical properties at intermediate temperatures.
format Article
author Hamzah, E.
Kanniah, M.
Harun, M.
author_facet Hamzah, E.
Kanniah, M.
Harun, M.
author_sort Hamzah, E.
title Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
title_short Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
title_full Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
title_fullStr Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
title_full_unstemmed Effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
title_sort effect of beta phase on room to high temperature mechanical properties of as-cast gamma titanium aluminide
publisher Taylor & Francis
publishDate 2009
url http://eprints.utm.my/id/eprint/13537/
http://dx.doi.org/10.1080/15376490802710753
_version_ 1643646211407740928
score 13.211869

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