MICROSTRUCTURAL EVOLUTION DURING THE SINTERING OF A TI(C,N)-MO2C-NI ALLOY

Authors
YANG JK LEE HC
Citation
Jk. Yang et Hc. Lee, MICROSTRUCTURAL EVOLUTION DURING THE SINTERING OF A TI(C,N)-MO2C-NI ALLOY, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 209(1-2), 1996, pp. 213-217
Citations number
7
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
209
Issue
1-2
Year of publication
1996
Pages
213 - 217
Database
ISI
SICI code
0921-5093(1996)209:1-2<213:MEDTSO>2.0.ZU;2-X
Abstract
The evolution of microstructure during the sintering of a Ti(C0.7N0.3) -20Mo(2)C-15Ni alloy was investigated by X-ray diffraction and electro n microscopy. Mo-rich cubic (Mo,Ti)(C,N) solid solution forms by diffu sion of Ti into hexagonal Mo2C phase at the early stages of sintering before the appearance of liquid phase. At above 1200 degrees C, liquid phase appears and Ti-rich (Ti,Mo)(C,N) structures surrounding Ti(C,N) cores develop by the dissolution of Ti(C,N) and (Mo,Ti)(C,N) particle s into liquid binder phase followed by reprecipitation onto large Ti(C ,N) particles. Final full densification and well developed core and su rrounding structure were formed at higher temperature.