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Metals technology for aerospace applications in 2020: development of high temperature aluminum alloys for aerospace applications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Starke Jr., Edgar A. Dicus, Dennis Technical Monitor |
| Copyright Year | 2003 |
| Description | The role of trace additions on the nucleation and stability of the primary strengthening phase, omega, is of paramount importance for the enhancement of mechanical properties for moderate temperature application of Al-Cu-Mg-(Ag) alloys. In order to better understand the competition for solute, which governs the microstructural evolution of these alloys, a series of Al-Cu-Mg-Si quaternary alloys were prepared to investigate the role of trace Si additions on the nucleation of the omega phase. Si additions were found to quell omega nucleation in conjunction with the enhanced matrix precipitation of competing phases. These initial results indicate that it is necessary to overcome a critical Mg/Si ratio for omega precipitation, rather than a particular Si content. |
| File Size | 6518026 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030112533 |
| Archival Resource Key | ark:/13960/t23c10s0r |
| Language | English |
| Publisher Date | 2003-10-15 |
| Access Restriction | Open |
| Subject Keyword | Metals And Metallic Materials Nucleation Metals Heat Resistant Alloys Mechanical Properties Silicon Microstructure Technology Utilization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
