DEVELOPMENT OF Mg-ALLOY BY POWDER METALLURGY METHOD AND ITS CHARACTERIZATION

摘要

In the present research work, an attempt has been made to make Mg-alloy specimen by powder metallurgy. Due to sensitivity of the material, a proper selection of sintering atmosphere has been made. Mg powder along with other powders has been blended with a high energy ball mill. In this work, the effect of input parameters, such as compaction pressure, sintering temperature and sintering time was investigated on porosity, microhardness and dimensional change. The compaction pressure and sintering temperature play a significant role in the porosity and microhardness. Increasing the compaction pressure plays a positive role in the microhardness. The maximum value of the porosity in the present work was up to 37.41%. The dimensional expansion after sintering varies from 2 to 4.3%. The results of the porosity and microhardness were verified by scanning electron microscopy and X-ray diffraction.