Influence of high-strain rate and temperature on the mechanical behavior of Nl-, Fe-, and Ti- based aluminides [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 18 pages : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The majority of the strength characterization studies on ordered intermetallics have concentrated on the assessment of strength and work-hardening at conventional strain rates. Although the influence of strain rate on the structure/property relationships of pure nickel, iron, and titanium and a variety of their alloys have been extensively studied, the effect of strain rate on the stress-strain response of Ni-, Fe-, and Ti-based aluminides remains poorly understood. Dynamic constitutive behavior is however relevant to high speed impact performance of these materials such as during foreign object damage in aerospace applications, high-rate forging, and localized deformation behavior during machining. The influence of strain rate, varied between 0.001 and 10⁴ s⁻¹, and temperatures, between 77 & 800K, on the compressive mechanical behavior of Ni₃A1, NiAl, Fe₃Al, Fe-40Al-0.1B, Ti-24Al-11Nb, and Ti-48Al-2Cr-2Nb will be presented. In this paper the influence of strain rate on the anomalous temperature dependency of the flow stresses in these aluminides will be reviewed and compared between aluminides. The rate sensitivity and work hardening of each aluminide will be discussed as a function of strain rate and temperature and contrasted to each other and to the values typical for their respective disordered base metals. 66 refs., 16 figs., 2 tabs.
- Report Numbers:
- E 1.99:la-ur--96-2453
E 1.99: conf-961017--5
- Other Subject(s):
- Nickel Alloys
- Strain Rate
- Compression Strength
- Flow Stress
- Temperature Dependence
- Aluminium Alloys
- Titanium Base Alloys
- Iron Base Alloys
- Intermetallic Compounds
- Nickel Base Alloys
- Temperature Range 0065-0273 K.
- Temperature Range 0273-0400 K.
- Temperature Range 0400-1000 K.
- Impact Strength
- Strain Hardening
- Binary Alloy Systems
- Published through SciTech Connect.
American Society of Mechanical Engineers (ASME) and Metals materials week, Cincinnati, OH (United States), 6-10 Oct 1996.
Gray, G.T. III.
- Funding Information:
View MARC record | catkey: 14457922