LONG-RANGE ORDER IN FE RICH FE-AL ALLOYS. V. ROOM TEMPERATURE DEFORMATION BEHAVIOR
Abstract
The room temperature deformation behavior of FeAl alloys near the composition Fe3Al was studied as a function of quenching temperature (degree of order). A slip trace study showed (110) to be the dominant slip plane with (211) and (321) also participating. The relative slip plane preference was independent of the quench ng temperature. The yield stress of polycrystalline specimens and the critical resolved shear stress of single crystals was determined as a function of quenching temperature. A second strength maximum was also observed in the 700 to 750 C quenching temperature range; x-ray results showed complete suppression of Fe3Al type order, and no variation in the degree of retained FeAl type order. A third strength vs quenching temperature rise was observed at about 900 C, which it is suggested may be due to vacancy strengthening. Young's modulus exhibited anomalous behavior, increasing with increasing quenching temperature. The Young's modulus behavior did not correlate with the disordering of the Fe3Al superlattice. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0269873
Entities
People
- B.z. Weiss
- P.s. Rudman
Organizations
- Technion – Israel Institute of Technology