Title of article
Part I: Anisotropy of cracking from oxygen-induced dynamic embrittlement in bicrystals of IN718
Author/Authors
Kane، نويسنده , , William M. and Krupp، نويسنده , , U. and McMahon Jr.، نويسنده , , C.J.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
3
From page
58
To page
60
Abstract
It is shown that cracking from oxygen-induced dynamic embrittlement in bicrystals of the nickel-base superalloy IN718 having symmetrical Σ = 5 (013) tilt boundaries is considerably more rapid in the fast-diffusion direction parallel to the tilt axis than in the direction perpendicular to this axis. This lends support to the model that envisions the process as caused by diffusive penetration of grain boundaries ahead of a sharp crack by a surface-adsorbed embrittling element.
Keywords
Dynamic embrittlement , Superalloys , IN718 , Intergranular fracture , Bicrystals , High-temperature brittle fracture
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2009
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2159481
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