Feasibility study of producing multi-metal parts by Fused Filament Fabrication (FFF) technique
Feasibility study of producing multi-metal parts by Fused Filament Fabrication (FFF) technique
复制标题
熔丝成形（FFF）技术生产多金属零件的可行性研究
DOI：
10.1016/j.jmapro.2021.05.021
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发表时间：
2021-05-17
影响因子：
6.2
通讯作者：
Partanen, Jouni
中科院分区：
文献类型：
--
作者：
Mousapour, Mehrdad;Salmi, Mika;Partanen, Jouni
增材制造，或更常见的3D打印，最近已被确立为制造多材料零件的最先进技术之一。本文首次研究了用材料挤压工艺制造多金属零件的可能性。通过对高碳铁和不锈钢316 L丝的沉积，成功地打印出了混合、耦合和梯度三种类型的样品。在以不同的加热速率脱粘之后，它们在氩气气氛中在1310-1400 ° C的范围内等温烧结不同的保持时间。最后，分析了最终零件的相对密度、收缩率、显微组织演变和硬度等性能。总之，测得的相对密度高达92%，记录的样品收缩率在10%至40%之间。基于所进行的分析，在混合样品中观察到相对均匀的显微组织，这表明经济实惠的金属挤压技术可以取代传统的金属合金化方法。
Additive manufacturing, or more commonly 3D printing, has been recently established as one of the most advanced technologies for fabricating multi-material parts. In this work, the possibility of manufacturing multimetal parts by material extrusion process was studied for the first time. Three types of samples, named mixed, coupled and graded, resulting from deposition of two ferrous alloys: high carbon iron and stainless steel 316 L filaments, were successfully printed. After de-binding with different heating rates, they were isothermally sintered in the range of 1310-1400 degrees C for various holding times in argon atmosphere. Finally, some properties of the final parts, such as relative density, shrinkage, microstructural evolution, and hardness were analyzed. In conclusion, the relative density was measured up to 92 %, and the shrinkage recorded for the samples ranged between 10 % and 40 %. Based on the performed analyses, a relatively homogeneous microstructure was observed in the mixed sample, which indicates that the affordable metal extrusion technique could replace the conventional methods for metallic alloying.