Oxygen-induced intergranular fracture of the nickel-base alloy IN718 during mechanical loading at high temperatures

Oxygen-induced intergranular fracture of the nickel-base alloy IN718 during mechanical loading at high temperatures

There is a transition in the mechanical-failure behavior of nickel-base superalloys from ductile transgranular crack propagation to time-dependent intergranular fracture when the temperature exceeds about 600 °C. This transition is due to oxygen diffusion into the stress field ahead of the crack tip...

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Bibliographic Details
Main Authors: Ulrich Krupp, William Kane, Jeffrey A. Pfaendtner, Xinyu Liu, Campbell Laird, Charles J. McMahon Jr.
Format: Article
Language:English
Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2004-03-01
Series:Materials Research
Subjects:
IN718
intergranular fracture
dynamic embrittlement
grain boundary diffusion
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000100006

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http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000100006

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