Semisolid casting of aluminum silicon alloys

Kapusuz, Özgür Kemal


Yalçın, Merve Yeşim; Aydoğan Güngör, Eda; Department of Metallurgical and Materials Engineering (2023-1-26)
The efficiency of the systems generally increases with increasing service temperatures. For instance, high operation temperatures in the energy industry reduce operation costs, fuel consumption, and environmental pollution. Similarly, high service temperatures result in a longer range, higher carrying capacity, and performance in aerospace applications. However, service temperatures of currently used Nickel-based superalloys especially in aerospace and defense applications are limited below 700 °C. The form...
Micropatterned lead zirconium titanate thin films
Vartuli, JS; Özenbaş, Ahmet Macit; Chun, CM; Trau, M; Aksay, IA (Cambridge University Press (CUP), 2003-05-01)
Micropatterning of Pb(Zr0.52Ti0.48)O-3 (PZT) thin films with line features as small as 350 nm was demonstrated through capillary molding of organometallic solutions within the continuous channels of an elastomeric mold. Despite the large stresses that develop during the evaporation of the solvent, pyrolysis of the organics, and the densification and crystallization of the inorganic gel, the patterned crystalline PZT films were crack-free and mechanically robust. Flawless regions as large as I cm(2) were obt...
Microstructural evolution and room-temperature mechanical properties of as-cast and heat-treated Fe50Al50-nNbn alloys (n=1, 3, 5, 7, and 9 at%)
Yıldırım, Mehmet; Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (2016-05-10)
The microstructural evolution and room-temperature mechanical properties of Fe50Al50-nNbn alloys (n=1, 3, 5, 7, and 9 at%) were investigated after solidification and subsequent heat treatment. For all the compositions, the (Fe, Al)(2)Nb Laves phase formed because of the incomplete solid solubility of Nb in the Fe-Al-based phases and tended to develop an eutectic mixture with the Fe-Al-based phase. According to the results of EDS analysis and microstructural investigations, the Nb concentration of the eutect...
Microstructure and mechanical properties of squeeze cast intermetallic magnesium silicide dispersed aluminum-silicon-magnesium alloys
Soyer, Önder Muzaffer; Sarıoğlu, Filiz; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (1997)
Microstructure characterization of heat-treated ferromagnetic steels by magnetic barkhausen noise method
Gür, Cemil Hakan (2019-01-01)
This paper presents non-destructive evaluation of microstructures of heat treated steels by the Magnetic Barkhausen Noise (MBN) method. Various steel specimens having different microstructures were produced by appropriate heat treatments. All specimens were characterized by metallographic examinations, hardness and MBN measurements. The results showed that MBN parameters are highly sensitive to the variations in the microstructure, and this method is a promising candidate for practical non-destructive chara...
Citation Formats
Ö. K. Kapusuz, “Semisolid casting of aluminum silicon alloys,” Middle East Technical University, 2001.