Mechanical Properties of Two MIM Processed Nickel-Based Superalloys
| Periodical | Materials Science Forum (Volumes 591 - 593) |
|---|---|
| Main Theme | Advanced Powder Technology VI |
| Edited by | Lucio Salgado and Francisco Ambrozio Filho |
| Pages | 252-257 |
| DOI | 10.4028/www.scientific.net/MSF.591-593.252 |
| Citation | Bernardo N. Nobrega et al., 2008, Materials Science Forum, 591-593, 252 |
| Online since | August, 2008 |
| Authors | Bernardo N. Nobrega, Tiago Eberle, Waldyr Ristow |
| Keywords | Automotive Turbine, Mechanical Property, MIM, Nickel Superalloy, Nimonic® 90, Plasma Processing, Powder Metallurgy (PM) |
| Price | US$ 28,- |
A PADS (Plasma Assisted Debinding and Sintering) reactor developed by Lupatech S.A. has been employed to MIM process two Ni-based superalloys under Argon, at temperatures in the 1280 -1310 ºC range, and for 2 to 3 hours. Both materials have chemical compositions similar to that of standard Nimonic® 90 but differ considerably in their powder characteristics. One type of powder was gas-atomized whereas the other was water-atomized. Samples of both materials in as-sintered states as well as subject to different HIP and heat treating conditions have been characterized mechanically in tensile tests and by HV measurements. The best overall results are attained by the water-atomized material sintered at lower temperatures. The PADS processing of these superalloys shows marked advantages over more conventional PM processing technologies. These results are particularly relevant to the development of turbine components for the automotive and aerospace industries.
