Hot working behaviour of low-cost Ti-3.4Fe bio-implant alloy
نویسندگان
چکیده
Abstract This study investigated the hot workability of an experimental, non-toxic, low-cost Ti-3.4Fe alloy using flow stress analysis, constitutive modelling, processing maps and microstructural examination. Hot compression tests were performed on samples at different deformation temperatures (750, 800, 850 900 °C), strain rates (0.05, 0.1, 1 10 s −1 ) a total 0.6. The Gleeble® 3500 thermomechanical simulator. isothermally compressed analysed scanning electron microscope to assess microstructure. An Arrhenius-based model was used derive constants. From results, exponent activation energy 4.91 611 kJ.mol under steady-state condition 5.32 675 peak stress. exponents suggested dislocation climb glide mechanism controlling deformation. map showed that optimum conditions deform °C rate 0.1 for both stresses. microstructure revealed kinked, rotated bent lamella safe region (850 0.05 ), confirming dominance dynamic recovery as softening mechanism. Instabilities manifested cracks inhomogeneity 750 .
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ژورنال
عنوان ژورنال: The International Journal of Advanced Manufacturing Technology
سال: 2023
ISSN: ['1433-3015', '0268-3768']
DOI: https://doi.org/10.1007/s00170-023-11265-9