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Title: Creep-Fatigue -- Environment Interactions in INCONEL 617

Abstract

Creep-fatigue testing of alloy 617 was performed in air, vacuum, and purified Ar environments at 1000 °C. Tests were performed in axial strain control at total strain ranges of 0.3% and 1.0% (fully reversed) with hold times at maximum tensile strain ranging from 0 to 1800 s. Introduction of a tensile hold period led to reduced creep-fatigue life at both strain ranges in all environments; the effect was greater at 0.3% than 1.0%. The hold time effect clearly saturated for tests at 1.0% strain range; the behavior at 0.3% was not clear. Decarburization occurred in specimens tested in vacuum and purified Ar, but not in air. Although fatigue lives were longer in the inert environments than in air for most test conditions, quantitative assessment of the differences was not possible because cracking frequently did not occur before test termination due to load drop for tests in inert environment. Cavitation damage was observed for tests with tensile hold periods in all environments.

Authors:
;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
914577
Report Number(s):
INL/JOU-07-13130
Journal ID: ISSN 0921-5093; MSAPE3; TRN: US200812%%159
DOE Contract Number:  
DE-AC07-99ID-13727
Resource Type:
Journal Article
Journal Name:
Materials Science and Engineering: A
Additional Journal Information:
Journal Volume: 468 - 470; Journal ID: ISSN 0921-5093
Country of Publication:
United States
Language:
English
Subject:
99 - GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; AIR; ALLOYS; CAVITATION; DECARBURIZATION; INCONEL 617; STRAINS; TESTING; creep-fatigue; environmental interaction; Inconel 617; low-cycle fatigue; nickel alloy

Citation Formats

Totemeier, Terry C, and Tian, Hongbo. Creep-Fatigue -- Environment Interactions in INCONEL 617. United States: N. p., 2007. Web. doi:10.1016/j.msea.2006.10.170.
Totemeier, Terry C, & Tian, Hongbo. Creep-Fatigue -- Environment Interactions in INCONEL 617. United States. https://doi.org/10.1016/j.msea.2006.10.170
Totemeier, Terry C, and Tian, Hongbo. 2007. "Creep-Fatigue -- Environment Interactions in INCONEL 617". United States. https://doi.org/10.1016/j.msea.2006.10.170.
@article{osti_914577,
title = {Creep-Fatigue -- Environment Interactions in INCONEL 617},
author = {Totemeier, Terry C and Tian, Hongbo},
abstractNote = {Creep-fatigue testing of alloy 617 was performed in air, vacuum, and purified Ar environments at 1000 °C. Tests were performed in axial strain control at total strain ranges of 0.3% and 1.0% (fully reversed) with hold times at maximum tensile strain ranging from 0 to 1800 s. Introduction of a tensile hold period led to reduced creep-fatigue life at both strain ranges in all environments; the effect was greater at 0.3% than 1.0%. The hold time effect clearly saturated for tests at 1.0% strain range; the behavior at 0.3% was not clear. Decarburization occurred in specimens tested in vacuum and purified Ar, but not in air. Although fatigue lives were longer in the inert environments than in air for most test conditions, quantitative assessment of the differences was not possible because cracking frequently did not occur before test termination due to load drop for tests in inert environment. Cavitation damage was observed for tests with tensile hold periods in all environments.},
doi = {10.1016/j.msea.2006.10.170},
url = {https://www.osti.gov/biblio/914577}, journal = {Materials Science and Engineering: A},
issn = {0921-5093},
number = ,
volume = 468 - 470,
place = {United States},
year = {Thu Nov 01 00:00:00 EDT 2007},
month = {Thu Nov 01 00:00:00 EDT 2007}
}