Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

Aluminum-Lithium (Al-Li) alloys have been developed as an alternative to conventional aluminum alloys for use in aerospace and other applications where low-weight, high strength materials are required. The use of Al-Li alloys in military and civil air transport continues to increase [1]. The key benefits of Al-Li alloys, when compared to conventional aluminum alloys, are the lower density and higher elastic modulus. Thus, Al-Li alloys offer enhanced mechanical properties while decreasing overall weight. This is crucial for high performance aircraft, where the higher strength-to-weight ratio can give considerable velocity and maneuverability advantages. It is also of significant benefit for transport aircraft and spacecraft, where reduced weight will increase the range and lift capability, especially if operating at supersonic velocities with large loads. The improved efficiency increases the feasibility of developing a supersonic civil transport that can successfully operate within the economic restrictions of the commercial marketplace.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 6: Materials Characterization

Section

Materials Properties

Pages

1435-1442

DOI

10.1007/978-1-4615-5339-7_185

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Characterization and Depth Profile of Lithium Depletion in Aluminum-Lithium Alloys by Ultrasound

La Jolla, CA

Aluminum-Lithium (Al-Li) alloys have been developed as an alternative to conventional aluminum alloys for use in aerospace and other applications where low-weight, high strength materials are required. The use of Al-Li alloys in military and civil air transport continues to increase [1]. The key benefits of Al-Li alloys, when compared to conventional aluminum alloys, are the lower density and higher elastic modulus. Thus, Al-Li alloys offer enhanced mechanical properties while decreasing overall weight. This is crucial for high performance aircraft, where the higher strength-to-weight ratio can give considerable velocity and maneuverability advantages. It is also of significant benefit for transport aircraft and spacecraft, where reduced weight will increase the range and lift capability, especially if operating at supersonic velocities with large loads. The improved efficiency increases the feasibility of developing a supersonic civil transport that can successfully operate within the economic restrictions of the commercial marketplace.