Selected Properties of Beryllium-base Alloys Consolidated by Vacuum- arc Melting.
J Vacuum Sci and Technol 1971 8(6):Vm23-vm28
A preliminary survey of beryllium-base alloys was conducted by melting and testing small button-shaped ingots. Hardness and impact resistance were compared with those of pure beryllium. Structures were examined by microprobe analysis and conventional metallographic techniques. Larger homogeneous ingots of alloys showing promise were then consolidated by consumable electrode arc melting of pressed electrodes of beryllium and the intermetallic compound nial. The ingots were formed into rods of 1.7-Cm (5/8-in) diameter at reductions of 9 to 1 by impact extrusion. Evaluation of the rods was by tensile tests, hardness measurements, and microprobe analysis. Tensile properties at room temperature ranged from about 51,000 to 55,000 psi; tensile modulus was 30-50 x 106 psi; elongation was about 1 percent at room temperature and 2 to 9 percent at 600 deg c.
J. Vacuum Sci. and Technol., V. 8, No. 6, November-December 1971, PP. Vm23-vm28