Surface Characterization of TiNi Deformed by High-pressure Torsion
Effect of grain refinements and amorphization by high-pressure torsion (HPT) on surface chemistry was investigated on TiNi. X-ray diffraction and micro-Vickers tests were used to check the phase changes and hardness before and after HPT. X-ray photoelectron spectroscopy was used to observe the chang...
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| Format: | Article |
| Language: | English |
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ELSEVIER
2014
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| Online Access: | http://umpir.ump.edu.my/id/eprint/8100/1/Awang_Shri_2014_AppSurfSci.pdf |
| _version_ | 1796990387583188992 |
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| author | Awang Shri, Dayangku Noorfazidah Tsuchiya, Koichi Yamamoto, Akiko |
| author_facet | Awang Shri, Dayangku Noorfazidah Tsuchiya, Koichi Yamamoto, Akiko |
| author_sort | Awang Shri, Dayangku Noorfazidah |
| collection | UMP |
| description | Effect of grain refinements and amorphization by high-pressure torsion (HPT) on surface chemistry was investigated on TiNi. X-ray diffraction and micro-Vickers tests were used to check the phase changes and hardness before and after HPT. X-ray photoelectron spectroscopy was used to observe the changes in the natural passive film formation on the surface. Phase analysis reveals the change of crystalline TiNi to nanostructured one with increased hardness with straining by HPT. Grain refinement and amorphization caused by HPT reduce the amount of metallic Ni in the passive films and also increase the thickness of the film. |
| first_indexed | 2024-03-06T11:50:49Z |
| format | Article |
| id | UMPir8100 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:50:49Z |
| publishDate | 2014 |
| publisher | ELSEVIER |
| record_format | dspace |
| spelling | UMPir81002018-07-12T03:03:14Z http://umpir.ump.edu.my/id/eprint/8100/ Surface Characterization of TiNi Deformed by High-pressure Torsion Awang Shri, Dayangku Noorfazidah Tsuchiya, Koichi Yamamoto, Akiko TJ Mechanical engineering and machinery Effect of grain refinements and amorphization by high-pressure torsion (HPT) on surface chemistry was investigated on TiNi. X-ray diffraction and micro-Vickers tests were used to check the phase changes and hardness before and after HPT. X-ray photoelectron spectroscopy was used to observe the changes in the natural passive film formation on the surface. Phase analysis reveals the change of crystalline TiNi to nanostructured one with increased hardness with straining by HPT. Grain refinement and amorphization caused by HPT reduce the amount of metallic Ni in the passive films and also increase the thickness of the film. ELSEVIER 2014-11-06 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8100/1/Awang_Shri_2014_AppSurfSci.pdf Awang Shri, Dayangku Noorfazidah and Tsuchiya, Koichi and Yamamoto, Akiko (2014) Surface Characterization of TiNi Deformed by High-pressure Torsion. Applied Surface Science, 289. pp. 338-344. ISSN 0169-4332. (Published) https://doi.org/10.1016/j.apsusc.2013.10.161 10.1016/j.apsusc.2013.10.161 |
| spellingShingle | TJ Mechanical engineering and machinery Awang Shri, Dayangku Noorfazidah Tsuchiya, Koichi Yamamoto, Akiko Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title | Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title_full | Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title_fullStr | Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title_full_unstemmed | Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title_short | Surface Characterization of TiNi Deformed by High-pressure Torsion |
| title_sort | surface characterization of tini deformed by high pressure torsion |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/8100/1/Awang_Shri_2014_AppSurfSci.pdf |
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