The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips

Abstract This study investigates the optimization of mechanical milling parameters to enhance the recycling of Ti6Al4V machining chips, addressing a significant challenge in sustainable materials processing. The influence of ball-to-powder ratio (BPR) and ball size distribution on powder characteris...

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Main Authors: Seyyed Amir Reza Alavizadeh, Mehrdad Shahbaz, Majid Kavanlouei, Sang Sub Kim
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
Subjects:
Online Access:https://doi.org/10.1038/s41598-024-84913-z
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author Seyyed Amir Reza Alavizadeh
Mehrdad Shahbaz
Majid Kavanlouei
Sang Sub Kim
author_facet Seyyed Amir Reza Alavizadeh
Mehrdad Shahbaz
Majid Kavanlouei
Sang Sub Kim
author_sort Seyyed Amir Reza Alavizadeh
collection DOAJ
description Abstract This study investigates the optimization of mechanical milling parameters to enhance the recycling of Ti6Al4V machining chips, addressing a significant challenge in sustainable materials processing. The influence of ball-to-powder ratio (BPR) and ball size distribution on powder characteristics, including crystallite size, particle size, and phase composition, was systematically examined. Key findings include a 30% reduction in crystallite size, with the smallest crystallite size of 51.6 nm achieved at a BPR of 10:1, as determined by Rietveld refinement. Dynamic light scattering (DLS) measurements revealed the smallest average particle size of 220.09 nm for a 20:1 BPR with a 25:75 wt% ball size ratio. Energy-dispersive X-ray analysis (EDAX) confirmed the highest Ti content (76.62 wt%) in the 10:1 BPR sample, highlighting the correlation between milling parameters and chemical purity. Electron microscopy showed that ball size distribution significantly influenced particle morphology, with a higher fraction of smaller balls producing a more uniform particle distribution and spherical morphology. Additionally, annealing-induced phase transformations were analyzed, revealing the conversion of TiO into TiO₂ under specific conditions. This study demonstrates that optimized milling parameters can reduce crystallite size and improve particle morphology while achieving high chemical purity, laying the groundwork for practical applications in materials recycling and advanced manufacturing. The findings also show the potential for producing single-phase TiO₂ powders for use in paint and cosmetic products through tailored heat treatment processes.
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spelling doaj-art-6bcaf8aab1db45bdbb406ebca8717f672025-01-05T12:21:59ZengNature PortfolioScientific Reports2045-23222025-01-0115111510.1038/s41598-024-84913-zThe effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chipsSeyyed Amir Reza Alavizadeh0Mehrdad Shahbaz1Majid Kavanlouei2Sang Sub Kim3Department of Materials Science and Engineering, Faculty of Engineering, Urmia UniversityDepartment of Materials Science and Engineering, Faculty of Engineering, Urmia UniversityDepartment of Materials Science and Engineering, Faculty of Engineering, Urmia UniversityDepartment of Materials Science and Engineering, Inha UniversityAbstract This study investigates the optimization of mechanical milling parameters to enhance the recycling of Ti6Al4V machining chips, addressing a significant challenge in sustainable materials processing. The influence of ball-to-powder ratio (BPR) and ball size distribution on powder characteristics, including crystallite size, particle size, and phase composition, was systematically examined. Key findings include a 30% reduction in crystallite size, with the smallest crystallite size of 51.6 nm achieved at a BPR of 10:1, as determined by Rietveld refinement. Dynamic light scattering (DLS) measurements revealed the smallest average particle size of 220.09 nm for a 20:1 BPR with a 25:75 wt% ball size ratio. Energy-dispersive X-ray analysis (EDAX) confirmed the highest Ti content (76.62 wt%) in the 10:1 BPR sample, highlighting the correlation between milling parameters and chemical purity. Electron microscopy showed that ball size distribution significantly influenced particle morphology, with a higher fraction of smaller balls producing a more uniform particle distribution and spherical morphology. Additionally, annealing-induced phase transformations were analyzed, revealing the conversion of TiO into TiO₂ under specific conditions. This study demonstrates that optimized milling parameters can reduce crystallite size and improve particle morphology while achieving high chemical purity, laying the groundwork for practical applications in materials recycling and advanced manufacturing. The findings also show the potential for producing single-phase TiO₂ powders for use in paint and cosmetic products through tailored heat treatment processes.https://doi.org/10.1038/s41598-024-84913-zTi6Al4VMachiningChipsMillingRecyclingAnnealing
spellingShingle Seyyed Amir Reza Alavizadeh
Mehrdad Shahbaz
Majid Kavanlouei
Sang Sub Kim
The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
Scientific Reports
Ti6Al4V
Machining
Chips
Milling
Recycling
Annealing
title The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
title_full The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
title_fullStr The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
title_full_unstemmed The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
title_short The effect of mechanical milling for enhanced recycling Ti6Al4V powder from machining chips
title_sort effect of mechanical milling for enhanced recycling ti6al4v powder from machining chips
topic Ti6Al4V
Machining
Chips
Milling
Recycling
Annealing
url https://doi.org/10.1038/s41598-024-84913-z
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