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

Varma, Shailendra

University of Texas at El Paso

关键词: Tungsten Additions;    Elements;    Alloys;    Melting Points;    Nickel;   

DOI  :  10.2172/952944
RP-ID  :  None
RP-ID  :  FG26-05NT42491
RP-ID  :  952944

美国|英语

来源: UNT Digital Library

【 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.