SYMPOSIA PAPER Published: 23 August 2016
STP19619570004

Axial Stress Fatigue, Creep, and Rupture Properties of Unnotched and Notched Specimens of Heat Resistant Alloys

Source

Fatigue, rupture, and creep data at various temperatures obtained under various combinations of mean and alternating stress are presented for the alloys Stellite 31, 6.3 per cent molybdenum-Waspalloy, Inconel X-550, 16-25-6 Timken, Lapelloy, and stainless steel type 403. Tests were performed under axial stress on unnotched specimens and specimens having theoretical stress concentration factors of 2.4 and 3.4. The data are presented as stress range diagrams to show the effect on the fatigue and creep properties of specimen notch, temperature, ratio of alternating-to-mean stress, and stress magnitude. The role of both creep and fatigue as design factors and the relation of notch sensitivity to loading conditions are discussed with particular reference to temperature and ratio of alternating-to-mean stress.

Author Information

Vitovec, F., H.
Department of Mechanics and Materials, University of Minnesota, Minneapolis, US
Lazan, B., J.
Department of Mechanics and Materials, University of Minnesota, Minneapolis, US
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Details
Developed by Committee: E08
Pages: 45–62
DOI: 10.1520/STP19619570004
ISBN-EB: 978-0-8031-6976-0
ISBN-13: 978-0-8031-6545-8