Identification of flow instabilities during hot working of powder metallurgy superalloy IN 100

Authors
Murty, SVSN Rao, BN Kashyap, BP
Citation
Svsn. Murty et al., Identification of flow instabilities during hot working of powder metallurgy superalloy IN 100, POWD METALL, 44(2), 2001, pp. 165-170
Citations number
9
Categorie Soggetti
Metallurgy
Journal title
POWDER METALLURGY
ISSN journal
00325899 → ACNP
Volume
44
Issue
2
Year of publication
2001
Pages
165 - 170
Database
ISI
SICI code
0032-5899(2001)44:2<165:IOFIDH>2.0.ZU;2-N
Abstract
A simple instability condition based on the Ziegler's continuum principles as applied to large plastic flow, is extended for delineating the regions o f unstable metal flow during hot deformation of powder metallurgy materials , This criterion has been applied to the existing flow stress data of powde r metallurgy superalloy IN 100 and compared with the reported microstructur al observations. The optimum hot working conditions for the PM superalloy I N 100 are suggested.