Development of Advanced Aluminum Alloys from Rapidly Solidified Powders for Aerospace Structural Applications
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1979
- Accession Number
- ADA077800
Entities
People
- R. E. Lewis
Organizations
- Lockheed Martin Missiles and Space