HIGH TEMPERATURE FATIGUE BENDING PROPERTIES OF LOW CARBON STEEL

Document Type : Original Article

Authors

Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.

Abstract

ABSTRACT
High temperature fatigue bending properties of low carbon steel was studied. Tests
were carried out on a constant speed of 50Hz (3000rpm) at 300°C and 500°C by
decreasing stress amplitudes. The investigation was performed based on the stress-life
(S-N) approach for high cycle fatigue regime, to establish the empirical equations for
fatigue strength and endurance limit.
The endurance limit for 300°C is 249.9MNm-2 with knee at 10.03 million cycles while for
500°C it is expected to occur on 171.0MNm-2 at 43.29 million cycles. For low carbon
steel test at even higher temperature will experience further drastic drop in fatigue
strength.