Effect of the Material Anisotropy of MGC on Cylindrical Plunge Grinding Characteristics

Abstract

The purpose of this study is to make clear the grinding mechanism of MGC (Melt-Growth Composites), which is a unidirectional solidification Al₂O₃/YAG eutectic composite having excellent heat resistance. The crystal orientations of Al₂O₃ and YAG habits of MGC specimen are identified by EBSD, and the effect of anisotropy on grinding characteristics is experimentally investigated, analyzing surface roughness, shape accuracy and grinding force. In addition, ground surface property observed with SEM. As a result, we clarified the peculiar grinding characteristics depending on crystal orientation of single crystal Al₂O₃.