ON THE ROLE OF RECOVERY IN CREEP OF PRECIPITATION-STRENGTHENED POLYCRYSTALLINE NICKEL-BASE ALLOYS

Authors
CADEK J PAHUTOVA M SUSTEK V DLOUHY A
Citation
J. Cadek et al., ON THE ROLE OF RECOVERY IN CREEP OF PRECIPITATION-STRENGTHENED POLYCRYSTALLINE NICKEL-BASE ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 238(2), 1997, pp. 391-398
Citations number
27
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
238
Issue
2
Year of publication
1997
Pages
391 - 398
Database
ISI
SICI code
0921-5093(1997)238:2<391:OTRORI>2.0.ZU;2-9
Abstract
An attempt is made to shed some new light on the role of recovery in c reep of precipitation-strengthened polycrystalline nickel-base creep-r esistant alloys, comparing some basic creep data for a Ni-16Cr-10W-4Mo -Ti-Al alloy with similar data for a low carbon 18Cr-12Ni stainless st eel and a 15M(2)B-Fe-18Cr-12Ni in situ composite. The comparison sugge sts that the minimum creep strain rate of precipitation-stregthened po lycrystalline nickel-base creep-resistant alloys is controlled rather by recovery (driven by internal stress affected by the presence of gam ma'-particles), than by dislocation glide/climb (driven by effective s tress) past these particles. An urgent need to study in detail recover y in creep of precipitation-strengthened polycrystalline nickel-base a lloys is emphasized. (C) 1997 Elsevier Science S.A.