ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 12

Cyclic Stress-Strain Behavior and Low Cycle Fatigue of Ti 6242

Bui-Quoc, T
Professor, Research Engineer (Mechanical Engineering Department), and Associate Dean of Graduate Studies and ResearchSenior Engineer, Ecole PolytechniquePratt & Whitney Canada, MontrealLongueuil, QuebecQuebec

Gomuc, R
Professor, Research Engineer (Mechanical Engineering Department), and Associate Dean of Graduate Studies and ResearchSenior Engineer, Ecole PolytechniquePratt & Whitney Canada, MontrealLongueuil, QuebecQuebec

Biron, A
Professor, Research Engineer (Mechanical Engineering Department), and Associate Dean of Graduate Studies and ResearchSenior Engineer, Ecole PolytechniquePratt & Whitney Canada, MontrealLongueuil, QuebecQuebec

Nguyen, HL
Senior Engineer and staff technical consultant, Structures and Dynamics Group, Pratt & Whitney Canada, Longueuil, Quebec

Tadros, RN
Senior Engineer and staff technical consultant, Structures and Dynamics Group, Pratt & Whitney Canada, Longueuil, Quebec

(Received 6 March 1989; accepted 17 November 1989)

Abstract

Results of strain-controlled fatigue tests at 329°C on Ti 6242, a potentially important material for aircraft engines, are reported. These tests were carried out under completely reversed strain conditions (strain ratio R_ε = −1.0) and with positive strains (R_ε = 0.0). Comparisons are made between the stress-strain relations obtained from monotonic tensile tests, at fast and slow strain rates, and those obtained from constant strain amplitude fatigue tests and from increasing multistep fatigue tests. The influence of induced mean stress is discussed.

Keywords:
low cycle fatigue, cyclic stress-strain, multistep cycling, Ti alloy

Paper ID: JTE12469J
DOI: 10.1520/JTE12469J
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