Study of The Microstructure of Aisi Steel 304l in wz, Haz And Bm After Welding in the Gmaw Process
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 17, Issue 2
Abstract
In this work, itwas qualitative measuredthe microstructure of the HAZ(Heat Affected Zone)and WZ(Weld Zone) of AISI 304L Stainless Steel by the GMAW (Gas Metal Arc Welding) processpulsed,using the singlebead-on- plate procedure.For this purpose,was used GMAW process (Gas Metal Arc Welding) was in singlepass deposition on plate of this steel 304L. After the welding process it was observed that the transfer occurred (metal transfer)exercised important effect on some on some properties of the weld joint, such as directing of the grains, inter dendritic spacing and microhardnessVickersduring the welding. In the Centre of the weld bead,heat flow and dendritics structures andthe microstructure is predominantly ferriteļ¤ and with austeniticas lines because the steel is predominantly austenitic.Growth in weld joints is, being an epitaxial phenomenon, where the grains of the WZ increase with the same crystalline orientation of the grains of the HAZ, as if the grains were planted in BM.
Authors and Affiliations
*Queiroz, A, V, Fernandes, M, T, Silva, L,M, Demarque, R, Oliveira, E.M, Ellem, P. S, Lima, I,R, Barbosa, G, C. , Teixeira, P, S. , Castro, J.A. 10
Keywords
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