The Effect of Homogeneity on the Formability of 7000 Series Aluminum Alloys for Cartridge Cases
Since World War II various attempts have been made to successfully substitute aluminum for brass in cartridge cases. Only partial success has been achieved; the main problem appears to be burn throughs which infrequently occur in the side wall of the cases. The nature of the failure is such that (i) severe damage occurs to the weapon upon burn-through and (ii) failure analysis is difficult. The general interpretation is that small tears occur during the cupping operation which are obscured by subsequent forming operations.
KeywordsYield Strength High Yield Strength Limit Draw Ratio Series Aluminum Alloy Work Aluminum Alloy
Unable to display preview. Download preview PDF.
- 1.S. A. Levy and C. Baker, “Development of Aluminum Alloys for Cartridge Cases”, Contract DAAA 25-70-C-0461, May, 1970.Google Scholar
- 2.M. C. Flemings, “Application of Solidification of Theory to Large Castings and Ingots”, The Solidification of Metals, Iron and Steel Institute publication 110, Session B, 227-287.Google Scholar
- 3.S. N. Singh and M. C. Flemings, “Solution Kinetics of a Cast and Wrought High Strength Aluminum Alloy”, TMS AIME, 245, 1803–1810 (1969).Google Scholar
- 4.S. N. Singh and M. C. Flemings, “Influence of Ingot Structure and Processing on Mechanical Properties and Fracture of a High Strength Wrought Aluminum Alloy”, Op. Cit., 1811-1819.Google Scholar
- 5.H. Antes, S. Lipson and H. Rosenthal, “Strength and Ductility of 7000 Series Wrought Aluminum Alloys as Affected by Ingot Structure”, Ibid, 239, 1634–1643 (1967).Google Scholar
- 6.S. A. Levy, “Homogeneous High Strength Aluminum Alloys”, A paper presented at the Spring Meeting of the Metallurgical Society of AIME, Las Vegas, Nevada, May, 1970.Google Scholar