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TEM observations of a rapidly solidified Al–Ti–C alloy
- Source :
-
Journal of Alloys & Compounds . Feb2003, Vol. 349 Issue 1/2, p121. 8p. - Publication Year :
- 2003
-
Abstract
- In the present work, the microstructure of melt-spun Al–10Ti–1C alloy has been characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The phases present in the melt-spun alloy are identified to be α-Al solid solution, the equilibrium tetragonal TiAl3 and hexagonal TiC by XRD and electron diffraction. Both large and small TiAl3 particles are observed in melt-spun Al–10Ti–1C alloy. The large TiAl3 particles, ∼1 μm in size, exhibit a homogeneous single-phase structure. The small TiAl3 particles are blocky, ∼0.1–0.2 μm in size. Some of them are a homogeneous single phase but some of them exhibit an ultrafine nanocellular structure. Polygonal TiC particles, ∼1.2–1.5 μm in size, are found in melt-spun Al–10Ti–1C alloy. Both TiAl3 and TiC particles are found to act as heterogeneous sites nucleating α-Al grains in the melt-spun alloy. The reasons for the formation of the microstructure of melt-spun Al–10Ti–1C alloy have also been discussed. [Copyright &y& Elsevier]
- Subjects :
- *X-ray diffraction
*ALLOYS
*RAPID solidification processing of metals
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 349
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 8724338
- Full Text :
- https://doi.org/10.1016/S0925-8388(02)00869-1