Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy
The present work explored effects of laser surface melting on microstructure and surface topography evolution in AZ31B magnesium alloy. Thermokinetic effects experienced by the material during laser surface melting were simulated using a multiphysics finite element model. Microstructure and phase ev...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-07-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956720302280 |
| _version_ | 1797203882049273856 |
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| author | Tso-Chang Wu Sameehan S. Joshi Yee-Hsien Ho Mangesh V. Pantawane Subhasis Sinha Narendra B. Dahotre |
| author_facet | Tso-Chang Wu Sameehan S. Joshi Yee-Hsien Ho Mangesh V. Pantawane Subhasis Sinha Narendra B. Dahotre |
| author_sort | Tso-Chang Wu |
| collection | DOAJ |
| description | The present work explored effects of laser surface melting on microstructure and surface topography evolution in AZ31B magnesium alloy. Thermokinetic effects experienced by the material during laser surface melting were simulated using a multiphysics finite element model. Microstructure and phase evolution were examined using scanning electron microscopy, X-ray diffraction, and electron back scatter diffraction. Surface topography was evaluated using white light interferometry. The interaction of surface melted samples with simulated body fluid was monitored by contact angle measurements and immersion studies up to 7 days. Laser surface melting led to formation of a refined microstructure with predominantly basal crystallographic texture. Concurrently, the amount of β phase (Mg17Al12) increased with an increase in the laser fluence. β phase preferentially decorated the cell boundaries. In terms of topography, the surface became progressively rougher with an increase in laser fluence. As a result, upon immersion in simulated body fluid, the laser surface melted samples showed an improved wettability, corrosion resistance, and precipitation of mineral having composition closer to the hydroxyapatite bone mineral compared to the untreated sample. |
| first_indexed | 2024-04-24T08:26:23Z |
| format | Article |
| id | doaj.art-ec97117d1ecc4ef784a8484a607fcc02 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:26:23Z |
| publishDate | 2021-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-ec97117d1ecc4ef784a8484a607fcc022024-04-16T22:16:00ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672021-07-019414061418Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloyTso-Chang Wu0Sameehan S. Joshi1Yee-Hsien Ho2Mangesh V. Pantawane3Subhasis Sinha4Narendra B. Dahotre5Department of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USADepartment of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA; Center for Agile and Adaptive Additive Manufacturing, University of North Texas, 3940 N Elm St, Denton, TX 76207, USADepartment of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA; Center for Agile and Adaptive Additive Manufacturing, University of North Texas, 3940 N Elm St, Denton, TX 76207, USADepartment of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA; Center for Agile and Adaptive Additive Manufacturing, University of North Texas, 3940 N Elm St, Denton, TX 76207, USADepartment of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA; Department of Metallurgical Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, IndiaCorresponding author at: Department of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA.; Department of Materials Science and Engineering, University of North Texas, 3940 N Elm St, Denton, TX 76207, USA; Center for Agile and Adaptive Additive Manufacturing, University of North Texas, 3940 N Elm St, Denton, TX 76207, USAThe present work explored effects of laser surface melting on microstructure and surface topography evolution in AZ31B magnesium alloy. Thermokinetic effects experienced by the material during laser surface melting were simulated using a multiphysics finite element model. Microstructure and phase evolution were examined using scanning electron microscopy, X-ray diffraction, and electron back scatter diffraction. Surface topography was evaluated using white light interferometry. The interaction of surface melted samples with simulated body fluid was monitored by contact angle measurements and immersion studies up to 7 days. Laser surface melting led to formation of a refined microstructure with predominantly basal crystallographic texture. Concurrently, the amount of β phase (Mg17Al12) increased with an increase in the laser fluence. β phase preferentially decorated the cell boundaries. In terms of topography, the surface became progressively rougher with an increase in laser fluence. As a result, upon immersion in simulated body fluid, the laser surface melted samples showed an improved wettability, corrosion resistance, and precipitation of mineral having composition closer to the hydroxyapatite bone mineral compared to the untreated sample.http://www.sciencedirect.com/science/article/pii/S2213956720302280Laser surface meltingMagnesium alloyLaser surface engineeringBiomineralization |
| spellingShingle | Tso-Chang Wu Sameehan S. Joshi Yee-Hsien Ho Mangesh V. Pantawane Subhasis Sinha Narendra B. Dahotre Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy Journal of Magnesium and Alloys Laser surface melting Magnesium alloy Laser surface engineering Biomineralization |
| title | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy |
| title_full | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy |
| title_fullStr | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy |
| title_full_unstemmed | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy |
| title_short | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy |
| title_sort | microstructure and surface texture driven improvement in in vitro response of laser surface processed az31b magnesium alloy |
| topic | Laser surface melting Magnesium alloy Laser surface engineering Biomineralization |
| url | http://www.sciencedirect.com/science/article/pii/S2213956720302280 |
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