Microtensile specimen tests are conducted across similar welds of a P91 steel at 873 K. Specimens of different surface conditions are tested at two different loading rates, 0·2 and 0·5 mm min−1, in order to study the effects of surface finish and loading rate on mechanical properties of P91 steel. Deformation behaviour is studied with an SEM on specimen side surfaces. Correlation between microstructural behaviour and mechanical properties is studied both in microtensile and standard tensile tests.
AllenD. J.: Proc. 6th Int. Conf.: ‘Parsons 2003: Engineering issues in turbine machinery, power plant and renewables’, (ed. A. Strang et al.); 2003, London, The Institute of Materials.
2.
DoganB.: Proc. 2nd Int. Conf. on ‘Integrity of high temperature welds’, (ed. T. H. Hyde); 2003, London, The Institute of Materials.
LuconE., BicegoV., D'AngeloD. and FossatiC.: Evaluating a service – exposed components mechanical properties by means of subsized and miniature specimens, ASTM STP 1204, Philadelphia, PA, USA, 1993.
6.
DoganB. and PetrovskiB.: Int. J. Pres. Ves. Pip., 2001, 78, 795 – 805.
7.
EC project SOTA: ‘SMT2070 development of creep crack growth testing and data analysis procedures for welds’.
