The process of aging precipitation in SiC<sub>p</sub>/6061 and Al<sub>2</sub>O<sub>3</sub>/6061 composites were investigated. Hardness testing, differential sca
Converting the balance equation of the branch of a mine ventilation network into an equivalent nonlinearprogramming problem,this paper proves that the total sum
Slip line method for sintered powder materials under condition of axial symmetry is proposed based on the simplified yield condition of sintered powder material
The effect of tensile stress and trace amounts of impurities on the creep activation energyof platinum was studied and the creep mechanism was disscussed.