The Ni3Al-Ni3Cr-Ni3Ru section of the Ni-Cr-Al-Ru system |
| |
Authors: | S Chakravorty H Hashim D R F West |
| |
Affiliation: | (1) Department of Metallurgy and Materials Science, Imperial College of Science and Technology, SW7 2BP London, UK |
| |
Abstract: | An investigation is reported of the 75 at% nickel section of the Ni-Cr-Al-Ru system at 1523 and 1273 K. Constitutional data obtained by electron probe microanalysis, X-ray diffraction and microscopical examination are presented as partial isothermal sections. At 1523 K, the major part of the section consists of phase, while the aluminium-rich region contains a![gamma](/content/k77017v1l42v2508/xxlarge947.gif) and +![gamma](/content/k77017v1l42v2508/xxlarge947.gif) region; the extent of the solid solution of chromium and ruthenium in![gamma](/content/k77017v1l42v2508/xxlarge947.gif) totals ~ 4 at%. The ruthenium-rich corner of the section shows a two-phase region consisting of + ruthenium-rich solid solution. At 1273 K the![gamma](/content/k77017v1l42v2508/xxlarge947.gif) , +![gamma](/content/k77017v1l42v2508/xxlarge947.gif) and + ruthenium regions increase in extent. The /![gamma](/content/k77017v1l42v2508/xxlarge947.gif) mismatch values in the equilibrated alloys studied lie in the range ~ –0.08 to –0.39%. Constitutional features of as-cast alloys are also reported. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|