Simultaneous Refinement of Primary Si and Modification of Eutectic Si in A390 Alloy Assisting by Sr-Modifier and Serpentine Pouring Channel Process
نویسندگان
چکیده
منابع مشابه
Modification of Primary Si Crystals and Fe-rich Intermetallics in LM28 Al Alloy Fabricated Through Thixoforming
In the present research, thixoforming route was carried out in order to enhance the microstructural features of LM28 piston alloy. Typical microstructure of this alloy was composed of coarse, polygonal primary silicon particles, eutectic matrix and intermetallic phases. Thermal analysis was carried out to study the solidification path of the base alloy and determine the major arrest temperature...
متن کاملRevealing heterogeneous nucleation of primary Si and eutectic Si by AlP in hypereutectic Al-Si alloys.
The heterogeneous nucleation of primary Si and eutectic Si can be attributed to the presence of AlP. Although P, in the form of AlP particles, is usually observed in the centre of primary Si, there is still a lack of detailed investigations on the distribution of P within primary Si and eutectic Si in hypereutectic Al-Si alloys at the atomic scale. Here, we report an atomic-scale experimental i...
متن کاملAu±Si eutectic alloy formation by Si implantation in polycrystalline Au
Dierent doses of high-energy Si (0.2±4.5 MeV) were implanted in polycrystalline Au foils (35 lm thick) to form a low melting point Au±Si alloy which can be used for gold soldering. A Au±Si eutectic structure has been observed in the implanted Au foils after annealing at 400°C for 1 h. The Au±Si liquid phase was diused in the polycrystalline Au foil along the grain boundaries which were ̄atten...
متن کاملStudy of Heterogeneous Nucleation of Eutectic Si in High-Purity Al-Si Alloys with Sr Addition
Al-5 wt pct Si master-alloys with controlled Sr and/or P addition/s were produced using super purity Al 99.99 wt pct and Si 99.999 wt pct materials in an arc melter. The master-alloy was melt-spun resulting in the production of thin ribbons. The Al matrix of the ribbons contained entrained Al-Si eutectic droplets that were subsequently investigated. Differential scanning calorimetry, thermodyna...
متن کاملCrystalline surface phases of the liquid Au-Si eutectic alloy
Oleg G. Shpyrko,1,2,* Reinhard Streitel,1 Venkatachalapathy S. K. Balagurusamy,1 Alexei Yu. Grigoriev,1 Moshe Deutsch,3 Benjamin M. Ocko,4 Mati Meron,5 Binhua Lin,5 and Peter S. Pershan1 1Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA 2Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 604...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials
سال: 2019
ISSN: 1996-1944
DOI: 10.3390/ma12193109