TY - GEN
T1 - Influence of prior deformation on creep crack growth behaviour of 316H austenitic steels
AU - Nezhad, Hamed Yazdani
AU - O'Dowd, Noel P.
AU - Davies, Catrin M.
AU - Mehmanparast, Ali N.
AU - Nikbin, Kamran M.
PY - 2012
Y1 - 2012
N2 - The influence of pre-strain and pre-stress on creep crack growth behaviour of 316H austenitic steels is studied experimentally and numerically in this paper. Compact tension, C(T), specimens (25mm thickness) have been extracted from two steam headers, one as-received and one uniformly compressed to the strain value of 8%. The C(T) specimen extracted from the as-received header was compressed, introducing a non-uniform strain field. Creep crack growth (CCG) tests were performed at 550°C. Comparisons have been provided with the results from as-received C(T) specimens. Finite element (FE) analysis has been carried out to simulate the CCG behaviour of the C(T) specimens. By choosing the problem parameters appropriately, good agreement may be achieved between the FE predictions and the creep data.
AB - The influence of pre-strain and pre-stress on creep crack growth behaviour of 316H austenitic steels is studied experimentally and numerically in this paper. Compact tension, C(T), specimens (25mm thickness) have been extracted from two steam headers, one as-received and one uniformly compressed to the strain value of 8%. The C(T) specimen extracted from the as-received header was compressed, introducing a non-uniform strain field. Creep crack growth (CCG) tests were performed at 550°C. Comparisons have been provided with the results from as-received C(T) specimens. Finite element (FE) analysis has been carried out to simulate the CCG behaviour of the C(T) specimens. By choosing the problem parameters appropriately, good agreement may be achieved between the FE predictions and the creep data.
UR - http://www.scopus.com/inward/record.url?scp=84883441329&partnerID=8YFLogxK
U2 - 10.1115/PVP2012-78115
DO - 10.1115/PVP2012-78115
M3 - Conference contribution
AN - SCOPUS:84883441329
SN - 9780791855058
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 375
EP - 385
BT - ASME 2012 Pressure Vessels and Piping Conference, PVP 2012
T2 - ASME 2012 Pressure Vessels and Piping Conference, PVP 2012
Y2 - 15 July 2012 through 19 July 2012
ER -