caa a22 4500 463225570 CHVBK 20180405153225.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10853-007-1856-7 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1856-7 Synthesis of bulk metallic glass composites using high oxygen containing Zr sponge [Elektronische Daten] [Ranadeep Bhowmick, Bhaskar Majumdar, Dinesh Misra, Upadrasta Ramamurty, K. Chattopadhyay] The effect of large concentration of oxygen on the microstructural development of Zr-Cu-Al-Ni bulk metallic glass (BMG) alloys, prepared from commercially available Zr sponge, has been studied. Apart from promoting crystallization, increased concentration of oxygen (∼8000ppm) spawns additional phases. In particular, we report the appearance of α-Zr, dendritic Zr2Cu phase and the Zr2Ni type cubic phases. Addition of oxygen scavenger like Yttrium only partially solves the problem. Phase evolution was also found to be sensitive to the cooling rate and hence to the thickness of the cast sample. Thus it is possible to produce a gradient microstructure with predominantly amorphous phase at the outer layer. Springer Science+Business Media, LLC, 2007 Bhowmick Ranadeep Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut Majumdar Bhaskar Defense Metallurgical Research Laboratory, Kanchanbagh, 500058, Hyderabad, India aut Misra Dinesh Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut Ramamurty Upadrasta Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut Chattopadhyay K. Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/22(2007-11-01), 9359-9365 0022-2461 42:22<9359 2007 42 10853 https://doi.org/10.1007/s10853-007-1856-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1856-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhowmick Ranadeep Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Majumdar Bhaskar Defense Metallurgical Research Laboratory, Kanchanbagh, 500058, Hyderabad, India aut NATIONALLICENCE 700 1- Misra Dinesh Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Ramamurty Upadrasta Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 700 1- Chattopadhyay K. Department of Materials Engineering, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/22(2007-11-01), 9359-9365 0022-2461 42:22<9359 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer