M(?)ssbauer spectra measurements reveal that Sn exists in YBa<sub>2</sub>Cu<sub>3<sub>x</sub></sub>Sn<sub>x</sub>O<sub>7<sub>y</sub></sub> system(x=0.05,0.10,0.20,
Based on the TEM analysis of substructures of lower bainite in two steels containing Si,thelattice invariant shear elements were determined and a plastic accomm
In consideration of the local equilibrium among vacancies,solute atoms and vacancy-soluteatom complexes and the influence of equilibrium grain boundary segregat
The effect of austenitizing temperature on segregation of impurities along grain boundaries insteel 4330M has been examined by AES.The impurity segregation was