EFFECT OF LASER-SURFACE TREATMENT ON FATIGUE-CRACK GROWTH RESISTANCE IN AN FE-MN-AL AUSTENITIC STEEL

Authors
SAXENA VK BHARTI A MALAKONDAIAH G RADHAKRISHNAN VM
Citation
Vk. Saxena et al., EFFECT OF LASER-SURFACE TREATMENT ON FATIGUE-CRACK GROWTH RESISTANCE IN AN FE-MN-AL AUSTENITIC STEEL, International journal of fatigue, 15(5), 1993, pp. 369-375
Citations number
18
Categorie Soggetti
Material Science","Engineering, Mechanical
Journal title
International journal of fatigue → ACNP
ISSN journal
01421123
Volume
15
Issue
5
Year of publication
1993
Pages
369 - 375
Database
ISI
SICI code
0142-1123(1993)15:5<369:EOLTOF>2.0.ZU;2-K
Abstract
Laser surface treatment (LST) results in significant improvement in fa tigue crack growth resistance of an Fe-Mn-Al austenitic steel. The obs erved beneficial effect is attributed to extensive crack closure as a result of compressive residual stresses originating from LST. The stru cture-sensitive nature of the crack growth operative in the base micro structure at low DELTAK levels (up to approximately 40 MPa m1/2) with LST.