Effect of exposure on the mechanical properties of Gamma MET PX
| Autor: | Mostafa Shazly, Vikas Prakash, Bradley A. Lerch, Susan L. Draper, I.E. Locci |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Moisture Mechanical Engineering Diffusion Metallurgy Alloy technology industry and agriculture Metals and Alloys chemistry.chemical_element General Chemistry engineering.material equipment and supplies Microstructure Oxygen chemistry Mechanics of Materials Materials Chemistry engineering Ductility Oxygen content Embrittlement |
| Zdroj: | Intermetallics. 13:1014-1019 |
| ISSN: | 0966-9795 |
| DOI: | 10.1016/j.intermet.2004.12.015 |
| Popis: | The effect of a service environment exposure on the mechanical properties of a high Nb content TiAl alloy, Gamma MET PX , was assessed. Gamma MET PX, like other TiAl alloys, experiences a reduction of ductility following high temperature exposure. Exposure in Ar, air, and high-purity oxygen all resulted in a loss of ductility with the ductility reduction increasing with oxygen content in the exposure atmosphere. Embrittling mechanisms, including bulk microstructural changes, moisture induced environmental embrittlement, and near surface effects were investigated. The embrittlement has been shown to be a near-surface effect, most likely due to the diffusion of oxygen into the alloy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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