An investigation into thermomechanical fatigue of metal matrix composites

Experimental and theoretical approaches are used to characterize the thermomechanical deformation behavior of metal matrix composites. Experiments on unreinforced and SiC particulate reinforced Al 2xxx-T4 have been conducted under several mechanical strain-temperature phasing conditions. Based on stress range, substantial improvements in fatigue life have been observed. However, based on strain range, the effect of reinforcement on fatigue lives differs depending on the mechanical strain-temperature phasing, temperature, and strain rate. Several deformation mechanisms of unreinforced and reinforced Al 2xxx-T4 have been identified, including void formation, crack initiation, intergranular/transgranular crack growth, oxide penetration at the crack tips, crack deflection due to particle interference, and mean stress effects.

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

2011

Author dc:creator

• Karayaka, Metin

Contributors dc:contributor

• Sehitoglu, Huseyin

• Engineering, Mechanical
• Engineering, Metallurgy
• Engineering, Materials Science

Statement dc:rights

• Copyright 1992 Karayaka, Metin

Language dc:language

eng

Identifier

AAI9215835
(UMI)AAI9215835

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19177