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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Experimental study of the Al-rich corner of the Al-Si-Ti system at 500 °C
verfasst von : Yang Li, Qun Luo, Jie-Yu Zhang, Qian Li
Erschienen in: Light Metals 2013
Verlag: Springer International Publishing
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The Al-Si-Ti ternary phase diagram and the correlated thermodynamic database play an important role in material design of high performance alloys for this system. In the present work, we have studied the phase equilibriums of the Al-rich corner of the Al-Si-Ti system at 500°C by means of the diffusion couple technique. The scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) results indicated that four phase layers had formed between two end-members. The X-ray diffraction (XRD) results confirmed that (Al), (Si), Ti7Al5Si12 and Ti(Al,Si)3 phases existed in the diffusion zoon. The confirmed reaction path way can be express as (Al) → Ti7Al5Si12 → Ti(Al,Si)3. Besides, the equilibriums of (Al) + Ti7Al5Si12 and Ti7Al5Si12 + Ti(Al,Si)3 in Al-rich corner at 500°C were identified.