Effect of Pulse Current Pressure on Sintering of Mg-Al-Zn Elemental Powder Mixtures

概要

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The method of preparing magnesium-sintered alloy using pulsed current pressure and element powders was studied. Aluminum and zinc are general alloying elements for magnesium die casting. The Mg-Al-Zn powder mixtures were prepared by mixing such element powders, and consolidated by pulsed current pressure. The transverse rupture strength of the sintered compacts was influenced by compacting pressure during the increase of temperature. The sintering property of the compacts was estimated by comparing the transverse rupture strength. The transverse rupture strength of the pure magnesium compacts formed at a uniaxial pressure of 10 MPa during heating was about 2.7 times higher than that of 50 MPa. In other words, it is desirable that the compacting pressure is low when the powder mixtures are heated by pulsed current. The transverse rupture strength of the Mg-Al-Zn compacts prepared by this low compacting pressure was compared with that of as-cast.
一般社団法人粉体粉末冶金協会の論文