MECHANICAL-PROPERTIES OF HIP BONDED JOINTS OF AUSTENITIC STAINLESS-STEEL AND CU-ALLOY FOR FUSION EXPERIMENTAL REACTOR BLANKET

Tensile, fatigue and impact properties have been measured for hot isos tatic pressing (HIP) bonded joints of type 316 austenitic stainless st eel (SS316)/SS316, and of SS316/Al2O3 dispersion strengthened copper ( DSCu). The HIP bonded joints of SS316/SS316 had almost the same tensil e and fatigue properties as those of the base metal. The HIP bonded jo ints of SS316/DSCu had also almost the same tensile properties as thos e of the base metal of the DSCu, though total elongation and fatigue s trength were slightly lower than those of the DSCu base metal. Further data accumulation, even with further optimization of fabrication cond itions, is required, especially for HIP bonded SS316/DSCu joints, to c onfirm above data and reflect to blanket/first wall design.