METALLOGRAPHIC ANALYSIS AND STRENGTH INVESTIGATION OF DIFFERENT BE-CUJOINTS IN THE TEMPERATURE-RANGE RT-350-DEGREES-C

The goal of this work is to estimate the strength and structure of dif ferent Be-Cu joining techniques. Brazing, diffusion bonding and joint rolling methods were chosen as ITER Be-Cu joint method candidates. Sel ected for ITER application Be-Cu joints were produced as technological plates (30-50 mm x 50-100 mm x thickness). All samples for further in vestigations were cut from initial technological plates. To compare me chanical strength of selected Be-Cu joints tensile and shearing tests of chosen candidates were carried out in the temperature range RT-350 degrees C. The metallographic analysis of the Be-Cu cross-section was also done. Preliminary results of these tests as well as metallographi c analysis data are presented. The industrial possibilities of produci ng required for ITER full scale Be-Cu joints are discussed.