Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
MICROSTRUCTURAL ANALYSIS AND HARDNESS OF WELDS OVERLAY OF FECRMO ALLOYS
Submission Author:
Catiane Lima , PA
Co-Authors:
Alberto Ribeiro Correa, Danyella Crystyane Silva Cardoso, Eduardo Braga, Catiane Lima
Presenter: Alberto Ribeiro Correa
doi://10.26678/ABCM.COBEM2017.COB17-2294
Abstract
This paper aims to analyze a weld overlay of FeCrMo alloys welded by the processes of GAS METAL ARC WELDING (GMAW) and GAS METAL ARC WELDING-COLD WIRE (GMAW-CW) with different percentages of cold wire (CW), these being of 0, 10, 20, 30, 40 e 50% of CW. Aiming to verify the microstructure formed, its respective hardness and the behavior in wear condition when submitted to ITAC (Impact test and abrasion combined). The result showed that the microstructure formed in this situation was pearlitic, having hardness directly proportional to the amount of CW introduced. These results occurred because the CW contained 6.5% in mass of Chromo, what favored the increase of the strength of this coating.
Keywords
GMAW, GMAW-CW, hardness, microestructure, TIAC
