TY - JOUR
T1 - High-temperature microstructural characteristics of a novel biomedical titanium alloy
AU - Chang, Ming Chih
AU - Luo, Chin Wan
AU - Huang, Mao Suan
AU - Ou, Keng Liang
AU - Lin, Li Hsiang
AU - Cheng, Hsin Chung
N1 - Funding Information:
The authors would like to thank the Center of Excellence for Clinical Trial and Research in Neurology and Neurosurgery , Taipei Medical University-Wan Fang Hospital for financially supporting this research under contract No. DOH99-TDB-111-003, and supported partly by Biomate Medical Devices Technology Co., Ltd.
PY - 2010/6/11
Y1 - 2010/6/11
N2 - In this study, the high-temperature microstructural characteristics of the Ti-5Al-1Sn-1Fe-1Cr (Ti-5111) alloy were determined by optical microscopy, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry. During solution treatment between 800 and 1000 °C, the phase transformation sequence of the alloy was found to be (α + β) → (α + α′ + β) → (α + α′ + α″ + residual β) → (α′ + β). The residual β phase subsequently transforms to the α″ phase during quenching. The driving force for this transformation is the cooling rate. The martensite starting point (Ms) and β transus temperature of the Ti-5111 alloy are nearly 860 and 960 °C, respectively. These values are lower than those of the Ti-6Al-4V alloy. Moreover, it is believed that the concentration of Al in α′ martensite plays a crucial role in the formation of the twin-type martensite.
AB - In this study, the high-temperature microstructural characteristics of the Ti-5Al-1Sn-1Fe-1Cr (Ti-5111) alloy were determined by optical microscopy, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry. During solution treatment between 800 and 1000 °C, the phase transformation sequence of the alloy was found to be (α + β) → (α + α′ + β) → (α + α′ + α″ + residual β) → (α′ + β). The residual β phase subsequently transforms to the α″ phase during quenching. The driving force for this transformation is the cooling rate. The martensite starting point (Ms) and β transus temperature of the Ti-5111 alloy are nearly 860 and 960 °C, respectively. These values are lower than those of the Ti-6Al-4V alloy. Moreover, it is believed that the concentration of Al in α′ martensite plays a crucial role in the formation of the twin-type martensite.
KW - High-temperature microstructure
KW - Phase transformation
KW - Titanium alloy
KW - Transmission electron microscopey
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U2 - 10.1016/j.jallcom.2010.03.052
DO - 10.1016/j.jallcom.2010.03.052
M3 - Article
AN - SCOPUS:77953126998
VL - 499
SP - 171
EP - 175
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
SN - 0925-8388
IS - 2
ER -