Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging
A research study was conducted to examine the effects of thermal treatment and bioactive glass (BG) particles on the microstructure, mechanical properties, and corrosion behavior of a composite based on an AZ91 alloy matrix. This composite underwent friction stir back extrusion. The findings reveale...
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Elsevier
2025-06-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025013684 |
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| author | Pourya Motavallian Sayed Mahmood Rabiee Hamed Jamshidi Aval |
| author_facet | Pourya Motavallian Sayed Mahmood Rabiee Hamed Jamshidi Aval |
| author_sort | Pourya Motavallian |
| collection | DOAJ |
| description | A research study was conducted to examine the effects of thermal treatment and bioactive glass (BG) particles on the microstructure, mechanical properties, and corrosion behavior of a composite based on an AZ91 alloy matrix. This composite underwent friction stir back extrusion. The findings revealed that in solution-treated samples, the β-Mg₁₇Al₁₂ phase dissolved into the matrix and subsequently re-precipitated along grain boundaries during the aging process. Significant improvements in mechanical properties and corrosion resistance were observed following an aging treatment at 200 °C for 12 h. Prior to aging, the composite exhibited an optimal combination of ultimate tensile strength (365.8 MPa), yield strength (276.4 MPa), elongation (7.95 %), and hardness (77.58 HV) after undergoing friction stir back extrusion—surpassing the properties of the solution-treated samples. The corrosion resistance was enhanced due to the uniform dispersion of the β-Mg₁₇Al₁₂ phase in peak-aged samples. In a simulated body fluid solution, the minimum corrosion rate (1.86 mm/year) was recorded for the AZ91 composite containing 3 vol. % BG after 12 h of aging. This represents a reduction of over 40 % compared to the corrosion rate (2.79 mm/year) of AZ91 samples without BG reinforcement. |
| format | Article |
| id | doaj-art-cf762866af9b47a296a4d7a583a6ecf0 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-cf762866af9b47a296a4d7a583a6ecf02025-08-20T03:24:43ZengElsevierResults in Engineering2590-12302025-06-012610529810.1016/j.rineng.2025.105298Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing agingPourya Motavallian0Sayed Mahmood Rabiee1Hamed Jamshidi Aval2Department of Materials Engineering, Babol Noshirvani University of Technology, Shariati Avenue, Babol, 47148-71167, IranDepartment of Materials Engineering, Babol Noshirvani University of Technology, Shariati Avenue, Babol, 47148-71167, IranCorresponding author.; Department of Materials Engineering, Babol Noshirvani University of Technology, Shariati Avenue, Babol, 47148-71167, IranA research study was conducted to examine the effects of thermal treatment and bioactive glass (BG) particles on the microstructure, mechanical properties, and corrosion behavior of a composite based on an AZ91 alloy matrix. This composite underwent friction stir back extrusion. The findings revealed that in solution-treated samples, the β-Mg₁₇Al₁₂ phase dissolved into the matrix and subsequently re-precipitated along grain boundaries during the aging process. Significant improvements in mechanical properties and corrosion resistance were observed following an aging treatment at 200 °C for 12 h. Prior to aging, the composite exhibited an optimal combination of ultimate tensile strength (365.8 MPa), yield strength (276.4 MPa), elongation (7.95 %), and hardness (77.58 HV) after undergoing friction stir back extrusion—surpassing the properties of the solution-treated samples. The corrosion resistance was enhanced due to the uniform dispersion of the β-Mg₁₇Al₁₂ phase in peak-aged samples. In a simulated body fluid solution, the minimum corrosion rate (1.86 mm/year) was recorded for the AZ91 composite containing 3 vol. % BG after 12 h of aging. This represents a reduction of over 40 % compared to the corrosion rate (2.79 mm/year) of AZ91 samples without BG reinforcement.http://www.sciencedirect.com/science/article/pii/S2590123025013684Friction stir back extrusionAZ91 alloySolid solution and aging treatmentBioactive glass particlesCorrosion properties |
| spellingShingle | Pourya Motavallian Sayed Mahmood Rabiee Hamed Jamshidi Aval Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging Results in Engineering Friction stir back extrusion AZ91 alloy Solid solution and aging treatment Bioactive glass particles Corrosion properties |
| title | Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging |
| title_full | Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging |
| title_fullStr | Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging |
| title_full_unstemmed | Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging |
| title_short | Microstructure, mechanical properties and corrosion behavior of friction stir back extruded AZ91-bioactive glass composite after post processing aging |
| title_sort | microstructure mechanical properties and corrosion behavior of friction stir back extruded az91 bioactive glass composite after post processing aging |
| topic | Friction stir back extrusion AZ91 alloy Solid solution and aging treatment Bioactive glass particles Corrosion properties |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025013684 |
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