Master of Science
Materials Science and Engineering
Pense, Alan W.
The positive beneficial effects of warm prestressing have been demonstrated in a number of lavoratory tests and in principle, should have considerable value in enhancing the fracture capability of pressure vessels. However, there is some indication that the beneficial effects may be lost once actual vessel operational conditions, such as with prolonged thermal exposure. This embrittlement may be enough to trigger a catastrophic failure in the pressure vessels. An investigation was launched to study the effects of strain aging embrittlement, arising from overstressing techniques, on two pressure vessel steels, A533B and A516 grade 70.
Succop, Lawrence N., "The influence of warm prestressing on the strength, ductility, and toughness of pressure vessel steels" (1969). Theses and Dissertations. 3746.