Super-High Temperature Alloys and Composites from NbW-Cr Systems

Shailendra Varma

关键词: ALLOYS;    CHROMIUM ADDITIONS;    DUCTILITY;    ELEMENTS;    HEAT RESISTING ALLOYS;    MATERIALS;    MELTING POINTS;    NICKEL;    NIOBIUM ALLOYS;    POTENTIALS;    PROCESSING;    RISE;    TEMPERATURE RANGE 0400-1000 K;    TUNGSTEN ADDITIONS;    USES;   

DOI  :  10.2172/952944
RP-ID  :  None
PID  :  OSTI ID: 952944
Others  :  TRN: US201002%%1513

美国|英语

来源: SciTech Connect

【 摘 要 】

Nickel base superalloys must be replaced if the demand for the materials continues to rise for applications beyond 1000{sup o}C which is the upper limit for such alloys at this time. There are non-metallic materials available for such high temperature applications but they all present processing difficulties because of the lack of ductility. Metallic systems can present a chance to find materials with adequate room temperature ductility. Obviously the system must contain elements with high melting points. Nb has been chosen by many investigators which has a potential of being considered as a candidate if alloyed properly. This research is exploring the Nb-W-Cr system for the possible choice of alloys to be used as a high temperature material.