Eventos Anais de eventos
COBEF 2017
Congresso Brasileiro de Engenharia de Fabricação
CRACKING FACTORS EVALUATION ON FLASH-BUTT WELDING OF 600 GRADE DUAL PHASE STEEL
Submission Author:
Sergio Cordero Calvimontes , RJ , Bolivia
Co-Authors:
Antonio José Oliveira Cabral, Adauto Martins Assis
Presenter: Sergio Cordero Calvimontes
doi://10.26678/ABCM.COBEF2017.COF2017-0433
Abstract
A general evaluation of involved factors on Flash-Butt welding (FB Welding) of 600 Grade Dual Phase Steel (DP600 Steel) is intended, contrasting cracking issues on affected and non-affected welded zones. The first part focuses on the DP600´s mechanical behavior dependent of micro-constituents Ferrite and Martensite, this part also mentions DP600´s chemical composition and thermo-mechanical fabrication process highlights. In a second part, effects of heat input on welded region are presented, showing the relationship between material toughness and thermic affected regions. Finally, the brittlening effect of impurities and inclusions like contaminants on welded regions are sited. In addition, heat treatment is presented like a potential solution to avoid brittle welded regions.
Keywords
Flash-Butt Welding, Dual-Phase Steel, Cracks on Welded regions
