Master of Science in Mechanical Engineering (MSME)
First Committee Member
Ajit K. Roy
Second Committee Member
Number of Pages
Martensitic P91 grade steels containing 0.48, 0.96, 1.28 and 1.77 weight percent (wt%) silicon (Si) have been tested for evaluation of their tensile properties at temperatures ranging from ambient to 550Ã‚Â°C. The effect of activation using accelerator-driven electron beams on the room-temperature tensile properties of steels containing 0.48 and 1.28 wt% Si has also been investigated. The results indicate that all four heats of steel exhibited dynamic strain ageing at temperatures up to 400Ã‚Â°C. The activated specimens showed enhanced tensile strength but reduced ductility with increasing activation time, indicating radiation hardening of the tested materials. The electrochemically-polarized specimens showed more noble critical pitting potentials with increasing Si content due to the formation of more protective oxide films. While the tensile specimens tested at 550Ã‚Â°C exhibited ductile failures, brittle failures were seen at ambient temperature. However, all activated specimens revealed cleavage facets, indicating predominantly brittle failures.
Behaviors; Chronium; Corrosion; Effects; Molybdenum; Silicon; Steel; Temperature; Tensile
University of Nevada, Las Vegas
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Chava, Hanumantha Rao, "Temperature and silicon effects on tensile and corrosion behavior of chronium-molybdenum steel" (2008). UNLV Retrospective Theses & Dissertations. 2396.