SEPARATION AND DOMAIN STRUCTURE OF α + B2 PHASE IN Fe-Al ALLOYS

- Because of the compli- cated shape of the diagram of state the stable part obtained by heating of the crystalline solid samples and the diagram with the

quide, à partir d'observations en microscopie électronique et calorimétrie différentielle. Les compositions et les stabilités thermiques des deux phases diffèrent. Abstract -

a, within a pheophytin domain had to be determined for different pressures n,. This was done by extrapolating the pressure versus area curve 8 of the expanded

The resulting free energy for H- He mixtures leads to a complicated phase diagram exhibiting complete phase separa- tion below a pressure-dependent temperature and a

XRD patterns of the Fe-8Nb-30B powders mixtures as a function of milling time show a progressive broadening of the as-received powders diffraction peaks due to the refinement of

As the milling time increases, the intensity of the Bragg peaks for the obtained solid solution decreases and the diffracted peaks show considerable broadening within

other hexatic B phases have been identified on the basis of qualitative features associated with the X-ray powder pattern [14], as we are doing here, 650BC and 460BC

The critical temperature Tc and concentration x, are the coordinates of the maximum point on the critical line. Table I lists Tc and xc for several liquid metal