The successive alteration o the microstructure from the weld metal zone through weld bond tothe heat affected zone of a Cr18Ni13 austenitic-0.45%C steels weld j
The isothermal section of the W-Ni-Cu ternary system at 1017℃ was determined by meansof diffusion couple specimens,EMPA and X-ray diffraction.Body-centeredtetr
The diffusion process of Sn in the transformation of Nb<sub>6</sub>Sn<sub>5</sub> to Nb<sub>3</sub>Sn has been studied.Theexperimental results show that the gro