Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium

The high strain rate properties and microstructure observations of cobalt base superalloyd contains 0.9% Ti were investigated using Hopkinson bar. These cobalt base superalloys are tested at strain rates of 2×103, 3×103 and 4×103 s-1 and at different temperatures (25, 500 and 900°C), respectively. I...

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Main Authors:	Tao, Hsing Chen, Ting, You Chen
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/9498/ http://journalarticle.ukm.my/9498/ http://journalarticle.ukm.my/9498/1/14_Tao-Hsing_Chen.pdf

id	ukm-9498
recordtype	eprints
spelling	ukm-94982016-12-14T06:50:07Z http://journalarticle.ukm.my/9498/ Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium Tao, Hsing Chen Ting, You Chen The high strain rate properties and microstructure observations of cobalt base superalloyd contains 0.9% Ti were investigated using Hopkinson bar. These cobalt base superalloys are tested at strain rates of 2×103, 3×103 and 4×103 s-1 and at different temperatures (25, 500 and 900°C), respectively. It is found that the stress flow and strain rate sensitivity increases with increasing strain rate but decrease with increasing temperature. The microstructure observations confirm that the high strain rate mechanical behavior of the cobalt base superalloys specimens are directly related to the effects of the strain rate, temperature and the evolution of the microstructural texture. The strengthening mechanism in cobalt base superalloys is the multiplication of dislocation. The dislocation density increases with increasing strain rate but decrease with increasing temperature. Universiti Kebangsaan Malaysia 2015-12 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9498/1/14_Tao-Hsing_Chen.pdf Tao, Hsing Chen and Ting, You Chen (2015) Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium. Sains Malaysiana, 44 (12). pp. 1751-1756. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil12_2015/KandunganJilid44Bil12_2015.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The high strain rate properties and microstructure observations of cobalt base superalloyd contains 0.9% Ti were investigated using Hopkinson bar. These cobalt base superalloys are tested at strain rates of 2×103, 3×103 and 4×103 s-1 and at different temperatures (25, 500 and 900°C), respectively. It is found that the stress flow and strain rate sensitivity increases with increasing strain rate but decrease with increasing temperature. The microstructure observations confirm that the high strain rate mechanical behavior of the cobalt base superalloys specimens are directly related to the effects of the strain rate, temperature and the evolution of the microstructural texture. The strengthening mechanism in cobalt base superalloys is the multiplication of dislocation. The dislocation density increases with increasing strain rate but decrease with increasing temperature.
format	Article
author	Tao, Hsing Chen Ting, You Chen
spellingShingle	Tao, Hsing Chen Ting, You Chen Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
author_facet	Tao, Hsing Chen Ting, You Chen
author_sort	Tao, Hsing Chen
title	Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
title_short	Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
title_full	Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
title_fullStr	Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
title_full_unstemmed	Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
title_sort	microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/9498/ http://journalarticle.ukm.my/9498/ http://journalarticle.ukm.my/9498/1/14_Tao-Hsing_Chen.pdf
first_indexed	2023-09-18T19:55:03Z
last_indexed	2023-09-18T19:55:03Z
_version_	1777406473596305408

Microstructural evolution and high strain rate mechanical property of cobalt superalloy contain titanium

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