WAAMによるステンレス鋼と銅合金の異種金属造形における熱的異方性

抄録

Wire and arc based additive manufacturing (WAAM) has the advantage of fabricating with multiple types of materials, and localized material changes. Therefore, it is expected to be a means to realize multi-material fabrication. The objective of this study is to fabricate stainless steel and copper alloys as dissimilar metals and to impart arbitrary thermal anisotropy to the fabricated structures. In this experiment, a composite structure containing air layers was devised and fabricated using WAAM. The fabricated composite structure was heated using a rubber heater, and the temperature changes of a measurement surface was photographed with a thermography camera. In the 100-120 °C range, the composite structure transferred more heat in the vertical direction (A), but less heat in the horizontal direction (B). Specifically, the heat transfer was 2.23 times greater in the vertical direction (A) than in the horizontal direction (B) through air layers. It was clarified that the composite structure has thermal anisotropy.