Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DUCTILE-TO-BRITTLE TRANSITION TEMPERATURE CORRELATION OF CONVENTIONAL AND MINIATURIZED SPECIMENS FOR CHARPY IMPACT TESTING ON X65, L80 AND P110
Submission Author:
Teófilo Jacob Freitas e Souza , MG
Co-Authors:
Teófilo Jacob Freitas e Souza, Fernando Rodrigues, Dênis Soares de Freitas, Sinésio Franco
Presenter: Teófilo Jacob Freitas e Souza
doi://10.26678/ABCM.COBEM2019.COB2019-1090
Abstract
The Charpy impact test is used to determine the impact strength of the material and its transition temperature from a ductile fracture behavior to the brittle. In certain situations, the manufacturing of conventional test bodies is not possible since the material may have a complex geometry or the component in which the analysis is desired is in operation. In order to avoid stopping an equipment or analyzing complex geometry components, miniaturized specimens are manufactured. This study aimed to correlate the ductile-to-brittle transition temperature (DBTT) results for Charpy impact testing between conventional and miniaturized specimens. The materials analyzed were API 5L X65, API 5CT L80 and API 5CT P110 steels, usually used in the oil and gas industry. Initially, testing and transition temperature calculation procedures were established. Concluding the work,, it was possible to observe a reduction of the ductile-to-brittle transition temperature between conventional and miniaturized test specimens, in the order of -40 °C.
Keywords
Charpy impact test, miniCharpy, ductile-to-brittle transition temperature, correlation
