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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Universiti Kebangsaan Malaysia
2015
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my-ukm.journal.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 |
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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/9498/1/14_Tao-Hsing_Chen.pdf http://journalarticle.ukm.my/9498/ http://www.ukm.my/jsm/malay_journals/jilid44bil12_2015/KandunganJilid44Bil12_2015.html |
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13.211869 |