The Quality of Produced Sand-cast Engine Block Made from Elektron 21 Magnesium Alloy

摘要

The casting defects,microstructure and hardness of of sand-cast Elektron 21 magnesium alloy was investigated. Visual and radiographic examination showed the presence of non-metallic inclusions and porosity. Quantitative analysis of microstructure was performed, no correlation between section thickness, grain size, volume fraction of eutectic areas and hardness was observed. Casting defects have influenced the cracking at magnesium casting/steel tube interface.