Publication Type
Journal
Journal Name
Journal of Nuclear Materials
Publication Date
Page Numbers
78 to 82
Volume
407
Issue
12
Abstract
High temperature fracture behavior has been investigated for the nanostructured ferritic alloy 14YWT (SM10). The fracture toughness of the alloy was above 140 MPa√m at low temperatures, room temperature (RT) and 200°C, but decreased to a low fracture toughness range of 52 – 82 MPa√m at higher temperatures up to 700°C. This behavior was explained by the fractography results indicating that the unique nanostructure of 14YWT alloy produced shallow plasticity layers at high temperatures and a low-ductility grain boundary debonding occurred at 700°C.
