Stress relaxation behavior and dimensional stability of INCONEL (R) alloy 783

Authors
Fahrmann, MG Wereszczak, AA Kirkland, TP
Citation
Mg. Fahrmann et al., Stress relaxation behavior and dimensional stability of INCONEL (R) alloy 783, MAT SCI E A, 271(1-2), 1999, pp. 122-127
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
271
Issue
1-2
Year of publication
1999
Pages
122 - 127
Database
ISI
SICI code
0921-5093(19991101)271:1-2<122:SRBADS>2.0.ZU;2-S
Abstract
The stress relaxation behavior of a recently developed, low coefficient-of- thermal expansion superalloy, INCONEL(R) alloy 783,(1) has been studied in the temperature range from 482 to 649 degrees C and at two different strain levels of 0.1 and 0.2%. These conditions are representative of bolting app lications in steam turbines. The initial stress increase, observed at the l ower temperatures and stresses, is correlated with dimensional instabilitie s upon extended exposures at the same temperatures, i.e, the volumetric shr inkage measured in situ in a dilatometer. The experimental results are disc ussed in the context of creep and transformation strains. (C) 1999 Elsevier Science S.A. All rights reserved.