Dynamic strain aging in low cycle fatigue of duplex titanium alloys
Resource
Materials Science and Engineering: A, 528(13-14), 4381-4389
Journal
Materials Science and Engineering A
Pages
4381-4389
Date Issued
2011
Date
2011
Author(s)
Abstract
The influence of dynamic strain aging (DSA) on low cycle fatigue (LCF) in duplex Ti-6-4 and SP700 titanium alloys was studied. LCF was performed within the temperature range from 350°C to 450°C, at strain rates of 10-3s-1 and 10-4s-1, and strain amplitudes of 1.25% and 2%. DSA appeared as serrations at the plastic portion of the cyclic stress-strain hysteresis loop, as well as stress humps appearing in the cyclic stress response (CSR) curve of peak tensile stress response versus cycle number. Strain-induced micro twin formation was only observed in the sample after fatigue with 2% strain amplitude under a 10-4s-1 strain rate, indicating that it is a DSA induced phenomenon. © 2011 Elsevier B.V.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
187.pdf
Size
23.45 KB
Format
Adobe PDF
Checksum
(MD5):7b9092de1d12c74f7cae48f3ac68a28a