Grain Refinement in TiC-Ni3Al Composites

Tiegs, T.N.

Oak Ridge National Laboratory

关键词: Particle Size;    Sintering;    Oxygen;    Milling;    Wear Resistance;   

DOI  :  10.2172/777647
RP-ID  :  C/ORNL99-0557
RP-ID  :  AC05-96OR22464
RP-ID  :  777647

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Cooperative Research and Development Agreement (CRADA) was to develop composites of TiC-Ni{sub 3}Al with refined grain microstructures for application in diesel engine fuel injection devices. Grain refinement is important for improved wear resistance and high strength for the applications of interest. Attrition milling effectively reduces the initial particle size and leads to a reduction of the final grain size. However, an increase in the oxygen content occurs concomitantly with the grinding operation and decreased densification of the compacts occurs during sintering.