Abstract: Titanium architectural panels (20) are provided which have recrystallized surface portions on at least the outer surface (22) thereof to give a decorative appearance to the panels (20). Surface recrystallization is obtained by subjecting the panels (20) to multiple oven heating steps (H1, H2) with intermediate cooling steps (C1, C2), wherein during each heating step (H1, H2) maximum temperature ranges (TH1, TH2) are established and maintained for predetermined periods. The intermediate cooling steps (C1, C2) involve injection of an inert cooling gas (e.g., argon) into the oven to rapidly lower the temperature to minimum temperature ranges (TL1, TL2). Preferably, the individual panels (20) are framed using molybdenum frame assembly (42), and are then suspended on a graphite and molybdenum hanger assembly (72).