2 results listed
In the present study, effect of austenitizing time at
intercritical austenitizing temperatures was investigated on the
microstructural features of ductile cast iron. For this aim,
unalloyed ductile cast iron samples intercritically austenitized at
790 and 800 ° C for 1, 5, 15, 30, 60 and 120 min. The samples
were water quenched following intercritical austenitizing. Ferrite
+ martensite dual phase matrix structures have been observed in
intercritically austenitized and quenched samples. Martensite
volume fraction was increased with increasing austenitizing time.
The martensite volume fraction was significantly increased up to
30 min and no remarkable increment in martensite volume
fraction after 30 min. The martensite volume fraction can be
controlled both intercritical austenitizing time and temperatures.
International Conference on Advanced Technologies, Computer Engineering and Science
ICATCES
Volkan Kılıçlı
Mehmet Erdoğan
In this study, effect of air cooling from intercritical
austenitizing temperatures on microstructure and hardness in
GGG70 grade ductile cast irons. For this aim, ductile cast iron
specimens air cooled from intercritical austenitizing
temperatures at 780°C, 790°C, 800 °C, 810 °C, 820 °C, and
830 °C for 30 minutes. Experimental results showed that, pearlite
volume fraction and hardness increased with increasing
intercritical austenitizing temperatures. It can be produced
ductile cast irons which has different pearlite volume fraction by
controlling intercritically austenitizating in same chemical
composition GGG70 grade ductile cast iron.
International Iron & Steel Symposium
UDCS
Mehmet Uğur Söğüt
Serdar Uğurlu
Volkan Kılıçlı