The Hall-Petch relationship and mechanisms of fracture in B2 compounds. Third year progress report
A study was initiated in 1987 to examine structure and properties of grain boundaries in the B2 ordered alloys FeAl and NiAl. This project continued from 1990, with initial emphasis on CoAl, FeCo, and CuZn, but with continued work on FeAl and NiAl. Effect of alloy composition on structure/chemistry and properties of grain boundaries were examined by measuring yield strength vs grain size, measuring grain boundary composition using a scanning Auger electron microprobe, examining dislocation/grain boundary interactions during in-situ straining in TEM, and determining fracture modes and assessing strain extent at fracture surfaces using selected area channeling patterns. Progress during the last 3 years is reviewed.
- Research Organization:
- Dartmouth Coll., Hanover, NH (United States). Thayer School of Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-87ER45311
- OSTI ID:
- 10171447
- Report Number(s):
- DOE/ER/45311-T2; ON: DE93018887
- Resource Relation:
- Other Information: PBD: 30 Dec 1992
- Country of Publication:
- United States
- Language:
- English
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The structure and properties of grain boundaries in B2 ordered alloys: Progress report
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