Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments
Amorphous diamond-like carbon coating (DLC) of 2 μm in thickness was deposited over the aluminum alloy substrate using magnetron sputtering deposition technique. In order to understand the efficacy of coating deposition, coated specimens were subjected to rotating bending fatigue in air and methanol...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-12-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127518307147 |
| _version_ | 1811295281823612928 |
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| author | Nedunchezhian Srinivasan Lalith Kumar Bhaskar Ravi Kumar Sergio Baragetti |
| author_facet | Nedunchezhian Srinivasan Lalith Kumar Bhaskar Ravi Kumar Sergio Baragetti |
| author_sort | Nedunchezhian Srinivasan |
| collection | DOAJ |
| description | Amorphous diamond-like carbon coating (DLC) of 2 μm in thickness was deposited over the aluminum alloy substrate using magnetron sputtering deposition technique. In order to understand the efficacy of coating deposition, coated specimens were subjected to rotating bending fatigue in air and methanol environments respectively. Raman spectroscopy was used in conjunction with grazing incidence X-diffraction technique to obtain depth-resolved residual stress gradients of coated-aluminum substrate. The residual stress generated due to coating deposition was calculated using Raman spectroscopy and it was −1.13 ± 0.16 GPa (compressive in nature). Furthermore, Raman spectroscopy was utilized for the quantification of stress relaxation upon fatigue loading in air and methanol environments. It was observed that the irrespective of the testing environment, good correlation exists between the stress relaxation magnitude and number of cycles endured before failure. Keywords: Diamond-like coating, Methanol, Residual stress, Raman shift, Grazing incidence |
| first_indexed | 2024-04-13T05:30:56Z |
| format | Article |
| id | doaj.art-2292aa173d0d4169b98c384f483e8a03 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-13T05:30:56Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-2292aa173d0d4169b98c384f483e8a032022-12-22T03:00:27ZengElsevierMaterials & Design0264-12752018-12-01160303312Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environmentsNedunchezhian Srinivasan0Lalith Kumar Bhaskar1Ravi Kumar2Sergio Baragetti3Laboratory for High Performance Ceramics, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaLaboratory for High Performance Ceramics, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaLaboratory for High Performance Ceramics, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Corresponding author.Department of Management, Information and Production Engineering, University of Bergamo, Viale Marconi 5, Dalmine 24044, Italy; GITT – Centre on Innovation Management and Technology Transfer, University of Bergamo, Via Salvecchio 19, Bergamo 24129, ItalyAmorphous diamond-like carbon coating (DLC) of 2 μm in thickness was deposited over the aluminum alloy substrate using magnetron sputtering deposition technique. In order to understand the efficacy of coating deposition, coated specimens were subjected to rotating bending fatigue in air and methanol environments respectively. Raman spectroscopy was used in conjunction with grazing incidence X-diffraction technique to obtain depth-resolved residual stress gradients of coated-aluminum substrate. The residual stress generated due to coating deposition was calculated using Raman spectroscopy and it was −1.13 ± 0.16 GPa (compressive in nature). Furthermore, Raman spectroscopy was utilized for the quantification of stress relaxation upon fatigue loading in air and methanol environments. It was observed that the irrespective of the testing environment, good correlation exists between the stress relaxation magnitude and number of cycles endured before failure. Keywords: Diamond-like coating, Methanol, Residual stress, Raman shift, Grazing incidencehttp://www.sciencedirect.com/science/article/pii/S0264127518307147 |
| spellingShingle | Nedunchezhian Srinivasan Lalith Kumar Bhaskar Ravi Kumar Sergio Baragetti Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments Materials & Design |
| title | Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments |
| title_full | Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments |
| title_fullStr | Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments |
| title_full_unstemmed | Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments |
| title_short | Residual stress gradient and relaxation upon fatigue deformation of diamond-like carbon coated aluminum alloy in air and methanol environments |
| title_sort | residual stress gradient and relaxation upon fatigue deformation of diamond like carbon coated aluminum alloy in air and methanol environments |
| url | http://www.sciencedirect.com/science/article/pii/S0264127518307147 |
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