TY - JOUR
T1 - Post-quench ductility evaluation of Zircaloy-4 and select iron alloys under design basis and extended LOCA conditions
AU - Yan, Y.
AU - Keiser, J. R.
AU - Terrani, K. A.
AU - Bell, G. L.
AU - Snead, L. L.
PY - 2014/5
Y1 - 2014/5
N2 - Oxidation experiments were conducted at 1200 °C in flowing steam with tubing specimens of Zircaloy-4, 317, 347 stainless steels, and the commercial FeCrAl alloy APMT. The purpose was to determine the oxidation behavior and post-quench ductility under postulated and extended LOCA conditions. The parabolic rate constant for Zircaloy-4 tubing samples at 1200 °C was determined to be k = 2.173 × 107 g2/cm 4/s, in excellent agreement with the Cathcart-Pawel correlation. The APMT alloy experienced the slowest oxidation rate among all materials examined in this work. The ductility of post-quenched samples was evaluated by ring compression tests at 135 °C. For Zircaloy-4, the ductile to brittle transition occurs at an equivalent cladding reacted (ECR) of 19.3%. SS-347 was still ductile after being oxidized for 2400 s (CP-ECR b≈50%), but the maximum load was reduced significantly owing to the metal layer thickness reduction. No ductility decrease was observed for the post-quenched APMT samples oxidized up to 4 h.
AB - Oxidation experiments were conducted at 1200 °C in flowing steam with tubing specimens of Zircaloy-4, 317, 347 stainless steels, and the commercial FeCrAl alloy APMT. The purpose was to determine the oxidation behavior and post-quench ductility under postulated and extended LOCA conditions. The parabolic rate constant for Zircaloy-4 tubing samples at 1200 °C was determined to be k = 2.173 × 107 g2/cm 4/s, in excellent agreement with the Cathcart-Pawel correlation. The APMT alloy experienced the slowest oxidation rate among all materials examined in this work. The ductility of post-quenched samples was evaluated by ring compression tests at 135 °C. For Zircaloy-4, the ductile to brittle transition occurs at an equivalent cladding reacted (ECR) of 19.3%. SS-347 was still ductile after being oxidized for 2400 s (CP-ECR b≈50%), but the maximum load was reduced significantly owing to the metal layer thickness reduction. No ductility decrease was observed for the post-quenched APMT samples oxidized up to 4 h.
UR - http://www.scopus.com/inward/record.url?scp=84899640820&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2013.05.071
DO - 10.1016/j.jnucmat.2013.05.071
M3 - Article
AN - SCOPUS:84899640820
SN - 0022-3115
VL - 448
SP - 436
EP - 440
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -