Figure 6. Microhardness Vickers profiles obtained at different times after the welding

From

Time-evolution of Heat Affected Zone (HAZ) of Friction Stir Welds of AA7075-T651

A. Pastor, H. G. Svoboda

Journal of Materials Physics and Chemistry. 2013, 1(4), 58-64 doi:10.12691/jmpc-1-4-1