Determination of oxygen and nitrogen diffusivities in titanium aluminides by subscale microhardness profiling
Journal Article
·
· Scripta Materialia
- Indian Inst. of Technology, Kanpur (India). Dept. of Materials and Metallurgical Engineering
Significant subscale hardening was observed in Ti-25Al and Ti-24Al-15Nb after exposure in O{sub 2}, N{sub 2} and 20O{sub 2}-80N{sub 2} at 1,300 K. The diffusivities of nitrogen and oxygen were determined from the microhardness profiles. The diffusivities of nitrogen in Ti-25Al and Ti-24Al-15Nb are comparable to that reported for {alpha}-Ti. No data could be located in literature on these or similar alloys. Diffusivity of oxygen in Ti-24Al-15Nb determined in the present study is close to that reported for Ti-25Al-11Nb.
- OSTI ID:
- 233896
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 9 Vol. 34; ISSN 1359-6462; ISSN XZ503X
- Country of Publication:
- United States
- Language:
- English
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