A 1050 s eel is welded. After cooling, hard nesses in the heat-affected zone are obtained at various locations from the edge of the fusion zone. Determine the hard nesses expected at each point if a 1080 steel were welded under the same conditions. Predict the microstructure at each location in the as-welded 1080 steel.
Distance from Edge of Fusion ZoneHardness in 1050 Weld
0.05 mm ................................................. HRC 50
0.10 mm ................................................. HRC 40
0.15 mm ................................................. HRC 32
0.20 mm ................................................. HRC 28