ON THE NOTCH SENSITIVITY OF THE DUCTILE INTERMETALLIC NI3AL CONTAINING BORON

Authors
XU Y SCHULSON EM
Citation
Y. Xu et Em. Schulson, ON THE NOTCH SENSITIVITY OF THE DUCTILE INTERMETALLIC NI3AL CONTAINING BORON, Acta materialia, 44(4), 1996, pp. 1601-1612
Citations number
22
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Acta materialia → ACNP
ISSN journal
13596454
Volume
44
Issue
4
Year of publication
1996
Pages
1601 - 1612
Database
ISI
SICI code
1359-6454(1996)44:4<1601:OTNSOT>2.0.ZU;2-U
Abstract
Experiments and calculations have shown that the notch sensitivity of the ductile aluminide Ni3Al(B) is related to the suppression of plasti c flow by the triaxial state of tensile stress produced by the notch. Cracks initiate at the tip of the notch, where stress and strain are c oncentrated, and then propagate intergranularly when the degree of tri axiality exceeds a critical level.