A STUDY OF ANTIFRICTION ALLOYS OF THE 'ALCUSIP' TYPE,
Abstract
Alcusip castings over 80 mm in diameter have intolerable liquation of the lead over their height. The microstructure of alcusip is characterized by considerable nonuniformity. The ground mass - the ferrous component AlxFeySiz with CuAl2 crystals - is comparatively hard, while the inclusions of lead and the solid solution of copper in aluminum are soft. As the lead content in the alcusip increases, the strength and hardness decline and the relative elongation increases. Alcusip alloys show wear resistance inferior to that of B-16 alloy. Among the alcusip alloys, AMSK-1 shows the best resistance to wear. Alcusip alloys might be used as a replacement for bronze in light-duty bearings, when the specific pressure is of the order of 20 kg/sq cm and the speed below 3 m/sec. The value of the bearing-materials characteristic Pv < 60 kg.m/sq cm.sec, for the alcusip alloys. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 26, 1965
- Accession Number
- AD0624911
Entities
People
- K. M. Stroeva
- M. V. Dumchus
Organizations
- National Air and Space Intelligence Center