Al-Li alloys and ultrahigh-strength steels for U. S. Navy aircraft

Journal Article · Tue May 01 04:00:00 EDT 1990 · JOM (1989); (USA)

DOI:https://doi.org/10.1007/BF03220940· OSTI ID:6659078

Lee, E W; Neu, C E; Kozol, J ^[1]

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1. Naval Air Development Center, Warminster, PA (USA)

An evaluation is made of the development status and prospective performance advantages and cost reductions obtainable through the application of state-of-the-art Al-Li alloys to naval aircraft airframes and ultrahigh strength Ni-Co alloy steels to their landing gears. Structural weight fractions are expected to be reduced by 8-10 percent through substitution of high-stiffness Al-Li for conventional Al alloys. Ni-Co alloy steels enhance landing gear damage tolerance and resistance to environmental degradation, without associated weight penalty, when supplanting conventional low-alloy steels. Both materials are judged ready for immediate application to existing and next-generation U.S. Navy aircraft. 8 refs.

• OSTI ID: 6659078
• Journal Information: JOM (1989); (USA), Journal Name: JOM (1989); (USA) Vol. 42; ISSN JOMME; ISSN 1047-4838
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320201* -- Energy Conservation
Consumption
& Utilization-- Transportation-- Air & Aerospace
33 ADVANCED PROPULSION SYSTEMS
330600 -- Advanced Propulsion Systems-- Vehicle Design Factors
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
AIRCRAFT
AIRCRAFT COMPONENTS
ALLOYS
ALUMINIUM ALLOYS
CORROSION RESISTANCE
COST
DESIGN
EMBRITTLEMENT
EQUIPMENT
HYDROGEN EMBRITTLEMENT
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM ALLOYS
MILITARY EQUIPMENT
PERFORMANCE
STEELS
WEIGHT