AAWSAP DIRD, Materials for Advanced Aerospace Platforms, January 2010

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Contents
Introduction ...........................................................................................................iv
Launch Vehicles ................................................................................................. 1
Reusable Crew Modules...................................................................................... 9
Reusable Single-Stage-to-Orbit Vehicles ...................................................... 10
Advanced Al Alloys ....................................................................................... 11
Polymer Matrix Composites.......................................................................... 11
Al Matrix Composites.................................................................................... 12
Ti Alloys ....................................................................................................... 12
Ti Matrix Composites.................................................................................... 14
Ni-base Alloys .............................................................................................. 16
Refractory Metal Alloys ................................................................................ 18
Ceramic Matrix Composites .......................................................................... 18
Carbon-Carbon Composites .......................................................................... 19
Titanium Aluminides .................................................................................... 20
Propulsion Systems.......................................................................................... 21
Summary and Recommendations ..................................................................... 22
Figures
1. Schematic Diagram of Friction Stir Welding ....................................................... 2
2. Specially Modified 747 Transporter Unloading a Boeing 787 Composite
Fuselage Barrel Section ..................................................................................... 4
3. Micrograph Showing Phase Formation at the Surface of a Ti Alloy That has
Been Exposed to Air at Elevated Temperature ................................................. 13
4. Cross-Section Micrograph of a Ti Matrix Composite.......................................... 15
Tables
1. Potential Materials by Use Temperature Regime and Property ......................... 10
2. Example of Properties of Ti Matrix Composites ................................................ 14
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