Description

Materials of Mo and its alloy, including plate, rods, wires, tube, and foil, are manufactured with powder metallurgy and further deformation processing. Pressing is carried out by means of linear and isostatic presses. The pressed compacts are sintered in hydrogen at temperatures of ********0°C. The sintering imparts the strength and density to the compacts necessary for further processing. The sintered blocks are extruded, forged, rolled or swaged at temperatures of ********0°C. The density increases with the degree of reduction. Forgings, round bars and sheets are made in this processing. Large diameter wire is rolled and drawn at high temperatures, small diameter wire at low temperatures. Pure molybdenum has a melting point of ***0°C. Its high melting point and great high-temperature strength allow its use at temperatures up to ***0°C. Depending on the reduction in area by working, the metal begins to recrystallize between **0 and ***0°C. Between ***0 and ***0°C, spontaneous grain growth take place, resulting in a considerable decrease in strength and hardness. Molybdenum and its alloys have many applications owing to their exceptional mechanical stability at high temperatures.