Issue 37

C. Patil et alii, Frattura ed Integrità Strutturale, 37 (2016) 325-332; DOI: 10.3221/IGF-ESIS.37.43 330 Figure 6 : Effect of transverse speed on hardness for dissimilar FSW & TIG joints. Figure 7 : Microstructure of FSW and TIG showing precipitates and voids Figure 8 : Hardness values in the microstructural weld zones. FSW temperatures coming to the NZ and TMAZ will cause at least partial dissolution of the hardening phases. Normally, therefore, some softening within the NZ should be expected in heat treatable alloys that were welded in T-tempers. Some