The Effects of Strain Induced Softening on the Load Carrying Capability of Components

Recently interest has grown in using quenched and tempered 2.25 Cr 1 Mo steel in pressure vessels and piping systems. This material has a bainitic microstructure with improved short term strength characteristics over the more commonly used annealed form. The bainitic material cyclically softens, however, losing as much as 30 percent of its initial strength in a few hundred cycles at post yield strain ranges. In most practical instances, though, significant stress reversals in components only occur in localized regions, suggesting that the use of the enhanced strength characteristics would be acceptable.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Handrock, James Lee

Contributors dc:contributor

• Marriott, Douglas L.,

• Engineering, Mechanical

Identifier

(UMI)AAI8815348

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70148