The effects of powder type and compacting pressure on the Young's modulus and Poisson's ratio of sintered low alloy steels

In the same sintering and heat-treated conditions, the effects of partially alloyed and prealloyed powders with the different contents of alloying elements and compacting pressure on the Young's modulus (E) and Poisson's ratio (v) of sintered low alloy steels were investigated. The values of E and v depended mainly on the porosity (P) controlled by compacting pressure, and those values were affected slightly by the alloy powder types. The relations of P to E and v were described as the following equations: E = E₀ (1-k_E · P) ² and v = 0.034 (1-k_v · P)² + 0.267, where E₀ was the value of E at P = 0, and k_E and k_v were experimental constants that depends on the alloy powder types and sintering temperature.