The paper presents irradiation creep data for V-4Cr-4Ti irradiated to 3.7 dpa at 425 and 600 _C in the HFIR-17J experiment. Creep deformation was characterized by measuring diametral changes of pressur-ized creep tubes before and after irradiation. It was found that the creep strain rate of the US Heat 832665 of V-4Cr-4Ti exhibited a linear relationship with stress up to _180 MPa at 425 _C with a creep coefficient of 2.50 _10_6 MPa_1 dpa_1. A linear relationship between creep rate and applied stress was observed below _110 MPa at 600 _C with a creep coefficient of 5.41 _10_6 MPa_1 dpa_1; non-linear creep behavior was observed above _110 MPa, and it may not be fully accounted by invoking thermal creep. The bilinear creep behavior observed in the same alloy irradiated in BR-10 was not observed in this study.
Revised: September 7, 2010 |
Published: April 30, 2009
Citation
Li M., D.T. Hoelzer, M.L. Grossbeck, A.F. Rowcliffe, S.J. Zinkle, and R.J. Kurtz. 2009.Irradiation creep of the US Heat 832665 of V-4Cr-4Ti.Journal of Nuclear Materials 386.PNNL-SA-67149.