AN EVALUATION OF THE FRACTURE RESISTANCE OF ENGINEERING MATERIALS FROM THE FRACTURE SURFACE MORPHOLOGY |
| |
| Authors: | J. Alcala M. Ledezma |
| |
| Affiliation: | Universidad Politécnica de Cataluña, Departamento de Ciencia de los Materiales, ETSEIB Diagonal 647, Barcelona 08028, Spain;Intevep, S.A., Tecnología de Materiales Sectión Metalurgia, Urb. Santa Rosa Sector El Tambor, Los Teques Edo. Miranda, Apdo. 76343 Caracas 1070A, Venezuela |
| |
| Abstract: | Abstract— The following work examines the fracture morphology in relation to the COD R -curves of three stainless steels. Additional considerations are noted concerning crack growth behaviour based on simple, optical microscopic observations. Procedures for the determination of R -curves and initiation values are outlined when a multi-specimen technique is used and the crack growth is measured by a light microscope. The COD R -curves are obtained for different conditions which reduce fracture ductility in two 310S and one 304H stainless steels. These conditions include a sigma-phase in one 310S, and sensitization of the large grain size microstructure in the other 310S stainless steel. |
| |
| Keywords: | |
|
|
