MECHANISM OF CRACK-PROPAGATION IN LOW-CYCLE FATIGUE OF TYPE 316L STAINLESS-STEEL WITHIN THE TEMPERATURE-RANGE 20-300-DEGREES-C

Authors
KALANTARY MR CHUNG TE FAULKNER RG
Citation
Mr. Kalantary et al., MECHANISM OF CRACK-PROPAGATION IN LOW-CYCLE FATIGUE OF TYPE 316L STAINLESS-STEEL WITHIN THE TEMPERATURE-RANGE 20-300-DEGREES-C, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 189(1-2), 1994, pp. 85-94
Citations number
21
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
189
Issue
1-2
Year of publication
1994
Pages
85 - 94
Database
ISI
SICI code
0921-5093(1994)189:1-2<85:MOCILF>2.0.ZU;2-4
Abstract
Strain-controlled low cycle fatigue tests on type 316L austenitic stai nless steel using uniaxial specimens have been conducted in the temper ature range 20-300 degrees C. A fixed strain rate of 1 x 10(-3) s(-1) and a total strain range varying between 0.4 and 1% were employed. A m ajor finding is that there is a trough in the total fatigue life vs. t emperature curve at high strain ranges and at temperatures in the regi on of 50 degrees C, caused by cyclic cold creep. In this paper, we exa mine the microstructural characteristics of the region below the fract ure surface during low cycle fatigue and propose a model which semiqua ntitatively explains the anomalous low cycle fatigue behaviour at 50 d egrees C.