ABSTRACT

This chapter will first review some stress studies carried out, using neutron diffraction, on prototype brazings of interest for plasma facing components such as the ‘divertor’ (see below). They are developed to protect Cu or Mo cooling pipes with high temperature resistant materials such as composite graphite or tungsten. One of the main concerns in the lifetime prediction of such mock-ups for plasma facing components is the evaluation of the stress field existing in the component after manufacture. This stress field is mainly due to the fabrication operations and to the welding and brazing procedures.