基于高通量制备的增材制造材料成分设计

张百成, 张文龙, 曲选辉

Composition Design of Additive Manufacturing Materials Based on High Throughput Preparation

ZHANG Baicheng, ZHANG Wenlong, QU Xuanhui

图5 增材制造Ti6Al4V合金和Ti-8.5Cu合金的微观组织形貌、晶粒长大机理示意图以及增材制造Ti-Cu合金拉伸性能曲线[38]

Fig.5 Microstructure morphologies of Ti6Al4V (a) and Ti-8.5Cu (b) alloys, and grain growth mechanism of additive manufactured Ti6Al4V alloy and Ti-8.5Cu alloy, and tensile property curves of additive manufactured Ti-Cu alloy (c)[38] (Inset in Fig.5b shows the high magnified image of equiaxed grain structure. Inset in Fig.5c shows Ti-8.5Cu alloy has higher constitutional supercooling ability. CS—constitutional supercooling, TA—melt temperature, TE—equilibrium liquidus temperature, ΔTCS—amount of constitutional supercooling in front of the growing solid that provides the nucleation undercooling, ΔTn—critical undercooling for nucleation. ΔTCS(= TE- TA) and the value of ΔTn is qualitatively represented by the length bar, and the gray shape represents the grain morphology of the alloy)