TY - JOUR
T1 - Critical cooling rates of mono-Sized Fe-Based Glassy Particles in [(Fe xCo1-x)o.75B0.2Si0.05] 96Nb4 System
AU - Fukue, Masahiro
AU - Yodoshi, Noriharu
AU - Yamada, Rui
AU - Kawasaki, Akira
PY - 2012/10
Y1 - 2012/10
N2 - Fe based metallic glassy alloys are prospective material for micro parts due to their excellent mechanical properties. In this study we successfully prepared two kinds of [(FexCo1-x)o.75B 0.2Si0.05]96Nb4 (X=0.5 and 0.8) alloy mono-sized spherical particles with various sizes as a raw material for the micro parts by using originally developed process named Pulsated Orifice Ejection Method. Each alloy exhibits different critical diameter for maintaining a glassy phase due to the different glass forming ability. We estimated the critical cooling rates of X= 0.5 and 0.8 alloys to be 1000 K/s and 4000 K/s, respectively from calculation of cooling process during the free fall of the molten alloy droplets in cooling gas. Oxygen contamination amounts of the obtained particles are also investigated for the comparison between the conventional casting process and our new process.
AB - Fe based metallic glassy alloys are prospective material for micro parts due to their excellent mechanical properties. In this study we successfully prepared two kinds of [(FexCo1-x)o.75B 0.2Si0.05]96Nb4 (X=0.5 and 0.8) alloy mono-sized spherical particles with various sizes as a raw material for the micro parts by using originally developed process named Pulsated Orifice Ejection Method. Each alloy exhibits different critical diameter for maintaining a glassy phase due to the different glass forming ability. We estimated the critical cooling rates of X= 0.5 and 0.8 alloys to be 1000 K/s and 4000 K/s, respectively from calculation of cooling process during the free fall of the molten alloy droplets in cooling gas. Oxygen contamination amounts of the obtained particles are also investigated for the comparison between the conventional casting process and our new process.
KW - Critical cooling rate
KW - Iron-based metallic glass
KW - Mono-sized particles
UR - http://www.scopus.com/inward/record.url?scp=84870363801&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870363801&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.76.573
DO - 10.2320/jinstmet.76.573
M3 - Article
AN - SCOPUS:84870363801
SN - 0021-4876
VL - 76
SP - 573
EP - 578
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 10
ER -