method for grain refinement of aluminum alloys, especially aluminum silicon casting alloys

摘要

For grain refining of aluminium casting alloys, especially aluminium-silicon casting alloys, gallium phosphide and/or indium phosphide is added to the melt, if appropriate in addition to further grain refining additives and/or modifying additives. …??The addition of gallium phosphide and/or indium phosphide leads to good grain refining with a small tendency to form sink holes, and has no adverse effect on modification processes.