Hardness at 20°C as a function of annealing temperature (1 hour at temperature) of as-extruded alloys (ZA-2 – CuZr0,2, ZA-3 – CuZr0,37, ZA-8 – CuZr0,8, ZAC-1 – CuCr0,32Zr0,1) - (powder metallurgical alloys)

Tensile strength at 20°C as a function of annealing temperature of alloys (ZA-2 – CuZr0,2, ZA-3 – CuZr0,37, ZA-8 – CuZr0,8, ZAC-1 – CuCr0,32Zr0,1)  for 0,5 hour and 1 hour periods at temperature - (powder metallurgical alloys)

Note: A - as-extruded, 300°C anneal for 1 hour after each 10% strain increment at RT., continued to the desired degree of reduction. B - As-extruded, solution treated at 980°C for 30 min, water quenched, followed by 50% reduction in area (R.A.) at 20°C, then aged at 500°C for 3 hours, air cooled and further reduced to 75% R.A. C - As-extruded, solution treated at 980°C for 30 min, water quenched, followed by 50% R.A. at 20°C, then aged 450°C for 1 hour, water quenched and further reduced do desired thickness.

Room temperature hardness as a function of annealing temperature. Material at hard temper

Corrosion parameters Cu0.25Zr in the solutions at various pH with NaCl.

Weight-loss of specimens exposed in NaCl solution atmosphere of Cu0.36Cr, Cu, Cu0.36Cr0.11Zr , CuZr0.15, (Note: NaCl atmospheric corrosion test in salt spray chamber (in salt mist of 50 g NaCl/l) in the temperature of 35°C, in accordance with ISO 3768-1976 standard) .

Creep strength (17% cold work, 1% creep)

Creep strength (82% cold work, 1% creep)

Plot showing stress for 100 hour rupture life at several temperature - powder metallurgical alloy

Plots of cumulative volume loss vs time for copper and its alloys under 20 N at (a) 0 A, (b) 30 A and (c) 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of cumulative volume loss vs time for copper and its alloys under load of (a) 10 N and (b) 15 N at 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Sliding wear resistance for copper and its alloys under 20 N with and without current. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Sliding wear resistance vs hardness for various alloys under 20 N with and without current. (Note: Cu-wire cold drawn, copper alloys – age hardened). Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of wear rate vs load for copper and its alloys at (a) 0 A, (b) 30 A and (c) 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of wear rate vs current for copper and its alloys under (a) 10 N, (b) 15 N and (c) 20 N. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .