| Numéro |
J. Phys. Colloques
Volume 49, Numéro C5, Octobre 1988
Interface Science and Engineering '87An International Conference on the Structure and Properties of Internal Interfaces |
|
|---|---|---|
| Page(s) | C5-3 - C5-23 | |
| DOI | https://doi.org/10.1051/jphyscol:1988501 | |
Interface Science and Engineering '87
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-3-C5-23
DOI: 10.1051/jphyscol:1988501
General Electric Company, Corporate Research and Development, PO Box 8, Schenectady, NY 12301, U.S.A.
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-3-C5-23
DOI: 10.1051/jphyscol:1988501
INTERGRANULAR FRACTURE IN METALS
C.L. BRIANTGeneral Electric Company, Corporate Research and Development, PO Box 8, Schenectady, NY 12301, U.S.A.
Abstract
This paper concerns brittle intergranular fracture in metals. It is shown that the primary cause of intergranular fracture is impurity segregation. However, the ability of a given concentration of an embrittling species to cause fracture can be modified by many factors. These include the orientation of the grain boundary with respect to the stress axis, the structure of the grain boundary, the presence of second phase particles, and the general mechanical response of the material. It will be shown that intergranular fracture can be considered as a simple dissociative chemical reaction and models to explain the bond weakening caused by impurities will be discussed.