Microstructure and wear properties of Al–Pb–Cu alloys prepared by mechanical alloying

• Published in: Wear Vol. 253; no. 7; pp. 832 - 838
• Main Authors: Zhu, M., Zeng, M.Q., Gao, Y., Ouyang, L.Z., Li, B.L.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.10.2002; Amsterdam Elsevier Science; New York, NY
• Subjects: Al–Pb alloys; Applied sciences; Contact of materials. Friction. Wear; Exact sciences and technology; Friction, wear, lubrication; Machine components; Mechanical alloying (MA); Mechanical engineering. Machine design; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Wear; Mechanical alloying (MA); Wear; Al–Pb alloys; Vickers hardness; Aluminium base alloys; Lead alloy; Sintering; Alloying; Experimental study; Powder metallurgy; Mechanical alloying; Copper alloy; Dry friction; Tribology
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/S0043-1648(02)00165-5

In the present work, Al–10 wt.% Pb– x wt.% Cu ( x=0–5.5) powder mixtures were mechanically alloyed. Then the mechanically alloyed powders were sintered to fabricate bulk alloys. Scanning electron microscope, X-ray diffractometer and Vickers hardness indentation were used to characterize the microstructure and mechanical properties of the Al–10 wt.% Pb– x wt.% Cu alloys. Wear properties of the alloys were characterized by measuring the bulk wear under dry lubrication condition. By comparing the microstructure and wear properties of mechanically alloyed Al–10 wt.% Pb– x wt.% Cu alloys with that of mechanically alloyed Al–Pb alloy, the effect of Cu addition on microstructure and wear properties has been discussed. The present work shows that the wear properties of Al–10 wt.% Pb– x wt.% Cu alloys are the best at the composition of Al–10% Pb–4.5% Cu under the present experiment condition.