Subtask 12E2: Effect of oxidation on tensile behavior of V-5Cr-5Ti alloy
- Argonne National Lab., IL (United States)
The objectives of this task are to (a) evaluate the oxygen uptake of V-5Cr-5Ti alloy as a function of temperature and oxygen partial pressure in the exposure environment, (b) examine the microstructural characteristics of oxide scales and oxygen entrapped at the grain boundaries in the substrate alloy, (c) evaluate the influence of oxygen uptake on the tensile properties of the alloy at room and elevated temperatures, (d) evaluate oxidation kinetics of the alloy with aluminum-enriched surface layers, and (e) determine the effect of oxygen uptake on the tensile behavior of the alloy. Oxidation studies were conducted on V-5Cr-5Ti alloy specimens at 500{degrees}C in an air environment. The oxidation rates calculated from measurements of thermogravimetric testing are 10, 17, and 25 {mu}m/y at 400, 450 and 500{degrees}C, respectively. Uniaxial tensile specimens were oxidized for several time periods in air at 500{degrees}C and subsequently tensile-tested at 500{degrees}C in air. The hardened layer in each of these oxidized specimens was confined to 75 gm after 1000 h exposure at 500{degrees}C. The influence of the 1000-h oxidation is to increase the ultimate tensile strength of the alloy by {approx}10% while decreasing the tensile rupture strain from 0.23 to 0.14. 4 figs.
- Research Organization:
- Argonne National Lab., IL (United States)
- OSTI ID:
- 415184
- Report Number(s):
- ANL/FPP/TM--287; ITER/US--95/IV-MAT-10; ON: DE96000984
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of oxygen and oxidation on tensile behavior of V-5Cr-5Ti
Tensile properties of V-5Cr-5Ti alloy after exposure in air environment