Open AccessFailure analysis of an {alpha}-SiC tube subjected to thermal cycling in an oxygen-steam atmosphere
Author(s) -
Kristin Breder,
James R. Keiser
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/172081
Subject(s) - tube (container) , temperature cycling , materials science , oxygen , atmosphere (unit) , cycling , composite material , thermal , metallurgy , chemistry , thermodynamics , history , physics , organic chemistry , archaeology
Failure analysis of a 0.965 m long closed end {alpha}-SiC tube which failed during thermal cycling in an oxygen-steam atmosphere was conducted. The tube failed during heating after having survived several cycles. The shattered tube was re-assembled and the fracture origin was determined to be a flaw in the lower part of the tube on the outer surface. The flaw was likely an oxidation pit produced during the previous cycles. The stresses in the tube at the time of failure were a combination of stresses from the internal pressure and from thermal gradients