High-temperature strength tests of a material of liner plate [I]: High-temperature tensile and creep property of SM400B base metals

not registered ; Aoto, Kazumi ; not registered

This report described results of tensaile and creep tests under a high temperature with the base metal of the liner plate (SM400B) used in the SHTS cells of leaked sodium storage system of "MONJU plant". Results obtained are summarized as follows. (1)Foundmental high temperature strength characteristics data of the material of the liner plate was acquired. (2)There is no effect of heat treatment and cut-out direction on tensile strength and rupture elongation of the liner plate. (3)The tensile strength and rupture elongation rapidly change from 800C to 1000 C, because there were the recovery by a change of micro-structure in the temperature range near the Ac3 transformation point. Uniform elongation was approximately from 10% to 20%, without its value in 700C. (4)Elastic modulus and constitutional equation for elastic-plastic stress-strain behavior and the equation for the creep strain behavior were proposed. The results will be applied to evaluate the structural integrity of the SHTS cells of leaked sodium storage system of "MONJU plant". (SHTS ; Secondary Heat Transfer System)