Advanced Powder Metallurgy Aluminum Alloys Via Rapid Solidification Technology Phase 2 PDF Download

Advanced aluminum alloys are being developed that will provide major payoffs in terms of weight savings for new aerospace structures. The two property goals are: (1) a 30-percent increase in modulus of elasticity-to-density ratio, and (2) a 20-percent increase in modulus of elasticity-to-density ratio plus a 20-percent increase in strength-to-density ratio, when compared to Al 7075-T76 and without a significant loss in other properties important for structural applications. The program is organized into three phases: 1-a fundamental alloy and process development study; 2-scale-up of two best alloys and evaluation of mill product forms; 3-design evaluation involving selected redesign of aerospace components, analysis of payoffs, and recommendations for manufacturing technology development. Phase 1 activity, to be completed in the first two years, is organized into four Tasks: 1 - development of advanced aluminum alloys containing lithium; 2 - development of advanced aluminum alloys that do not contain lithium; 3 - quantitative microstructural analyses and mechanical property correlations; 4 - study of aerospace structural applications for advanced aluminum alloys including development and application of a method for predicting weight savings. Phase 1 activity is described below; Phases 2 and 3 have not been initiated.