POWDER FOR METAL ADDITIVE MANUFACTURING, MANUFACTURING METHOD THEREFOR, ADDITIVE MANUFACTURING DEVICE, AND CONTROL PROGRAM THEREFOR

摘要

The present invention provides a powder for metal additive manufacturing, wherein due to simple mechanical processing, smoking does not occur even when a preheating temperature is lowered. In this powder for metal additive manufacturing, a solidification structure including a dendrand structure of a surface of a metal powder is flattened. The flattening of the solidification structure including the dendrand structure is achieved via mechanical processing that includes collision processing of the metal powder. The mechanical processing is performed with the metal powder heated to 100°C-300°C. The powder for metal additive manufacturing is a metal powder wherein the capacitance component of the impedance as measured with the metal powder heated to a prescribed temperature is zero. This metal powder is a powder of a metal alloy that is produced according to an atomization method or a plasma rotating electrode method. This metal alloy includes a nickel-based alloy, a cobalt-chromium alloy, an iron-based alloy, an aluminum alloy, or a titanium alloy.