By W. Sudnik
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15. True stress-strain curves for 6061-T6 plates, weld metal, HAZ and as welded (Ambriz et al, 2010). 3 Fatigue crack growth (FCG) Fatigue behavior of aluminum alloys welded by conventional process and MIEA has been investigated (Ambriz et al. , 2004). Fig. 0 kN. In general, the a-N curves showed in Fig. , 2010b). Experimental results for a, were plotted in da/dN versus ∆K graphs according to Paris law: da n C K dN (4) where C and n are constants obtained directly from the fitting curve.
The corrosion and the SSC susceptibility of the welds are affected by the differences in composition, microstructure, and electrochemical potentials among the different zones. A lower electrochemical potential of the weld bead is commonly related to composition, microstructure and distribution of inclusions (Dawson et. , 1997). Similarly, in a study performed by Turnbull and Nimmo, about SCC susceptibility (Turnbull & Nimmo, 2005), a direct relation to OCPs with mechanical properties like microstructure or hardness of phases was reported.
The high thermal efficiency that allows welding plates by using a single welding pass. As a result, the thermal effect is reduced and the mechanical properties of the HAZ are improved as compared to a multi-pass welding procedure, ii. , 2008), iii. The solidification mode promotes an heterogeneous nucleation and jointly diminishes the micro-porosity formation, iv. , 2010a). MIEA welding technique employs the same equipment that is required to weld by GMAW. General dimensions and the schematic representation of the MIEA joint along with the weld bead geometry obtained were shown in Fig.
Arc Welding by W. Sudnik