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STATIC AND CYCLIC LOADING OF NOTCHED 304 STAINLESS STEEL BARS AT 650°C
Author(s) -
Wu KuangHsi,
Leckie Frederick A.
Publication year - 1990
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1990.tb00587.x
Subject(s) - materials science , intergranular corrosion , composite material , creep , low cycle fatigue , structural engineering , microstructure , engineering
Circular‐notched and sharp‐notched specimens made from 304 stainless steel have been tested at 650°C. The notched specimens are subjected to both constant and cyclic loading. The cyclic loading consists of a ramp increase in load followed by constant load and ramp unloading. The cycle times are 1 min and 10 min. It is found for the circular‐notched specimen that failure is dictated by the time on load and is independent of the number of cycles. Metallographic observations support the test results with fatigue damage being apparent only in the sharp‐notched specimens subjected to short‐time cyclic loading. Otherwise damage has the character of intergranular creep rupture.