The influence of thermomechanical processing on microstructure and properties of iron aluminides
- Idaho National Engineering Lab., Idaho Falls, ID (United States)
Iron aluminide joints and porous filters have been fabricated by the self-propagating high-temperature synthesis (SHS) process. Preliminary results indicate that the size and distribution of the porosity in filters can be controlled by varying process parameters, such as aluminum powder size, to obtain densities near the target of 70%. Using relatively large sized aluminum powder when making joints can result in grain growth across the joint interfaces which should result in stronger bonds. TEM, electron diffraction, and x-ray diffraction have been used to determine the relative amounts of the B2 and DO{sub 3} order phase in FA-129, and account for some of the differences powder, consolidated by hot extrusion, has been characterized and compared to traditional ingot processes material. Although the carbides have been refined, little improvement in fracture toughness has been observed.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI ID:
- 140128
- Report Number(s):
- ORNL/FMP-93/1; CONF-9305135-; ON: DE94001091; TRN: 93:003927-0022
- Resource Relation:
- Conference: 7. annual conference on fossil energy materials, Oak Ridge, TN (United States), 11-13 May 1993; Other Information: PBD: Jul 1993; Related Information: Is Part Of Proceedings of the Seventh Annual Conference on Fossil Energy Materials; Fossil Energy AR and TD Materials Program; Cole, N.C.; Judkins, R.R. [comps.]; PB: 402 p.
- Country of Publication:
- United States
- Language:
- English
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