EFFECT OF NITROGEN IMPLANTATION ON THE HYDROGEN DEPTH DISTRIBUTION AND FATIGUE PROPERTIES OF TI6AL4V (VOL 248, PG 73, 1998)

Authors
SCHMIDT H SOLTANIFARSHI M
Citation
H. Schmidt et M. Soltanifarshi, EFFECT OF NITROGEN IMPLANTATION ON THE HYDROGEN DEPTH DISTRIBUTION AND FATIGUE PROPERTIES OF TI6AL4V (VOL 248, PG 73, 1998), Materials science & engineering. A, Structural materials: properties, microstructure and processing, 255(1-2), 1998, pp. 172-176
Citations number
23
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
255
Issue
1-2
Year of publication
1998
Pages
172 - 176
Database
ISI
SICI code
0921-5093(1998)255:1-2<172:EONIOT>2.0.ZU;2-V
Abstract
Depth distributions and fatigue of nitrogen-implanted Ti6Al4V alloy we re investigated using backscattering spectrometry, nuclear reaction an alysis and rotating bending tests. A hydrogen accumulation (up to 2.6 at.%) occurs in the region enriched in nitrogen. High hydrogen concent rations occur when a mixture of titanium nitride (TiN) and alpha-titan ium is formed; the concentration decreases below 1.5 at.% when a conti nuous TIN layer is formed. Nitrogen implantation does not reduce fatig ue life. Fatigue cracks preferentially form in regions where the enric hment of nitrogen and hydrogen is close to the surface. (C) 1998 Elsev ier Science S.A. All rights reserved.