Joining Technologies for Metal Additive Manufacturing in the Energy Industry
- PDF / 1,584,888 Bytes
- 7 Pages / 593.972 x 792 pts Page_size
- 108 Downloads / 271 Views
https://doi.org/10.1007/s11837-020-04441-9 2020 The Minerals, Metals & Materials Society
ADDITIVE MANUFACTURING FOR ENERGY APPLICATIONS
Joining Technologies for Metal Additive Manufacturing in the Energy Industry MILO GILL,1 ETHAN TERRY,1 YUSUF ABDI,1 STANTON HAWKES,2 JACOB RINDLER,1 DAVID SCHICK,3 ANTONIO RAMIREZ,2 and EDWARD D. HERDERICK 1,4 1.—Center for Design and Manufacturing Excellence, The Ohio State University, Columbus, OH 43212, USA. 2.—Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43212, USA. 3.—Proto Precision Additive, Hilliard, OH 43026, USA. 4.—e-mail: [email protected]
Additive manufacturing (AM) has captured the imagination of the manufacturing community and has revolutionary potential across a number of energy applications. One particular challenge for these applications is the large size of metal AM components that are compelling to be printed. This necessitates welding and joining processes to integrate metal AM parts into larger assemblies, as well as the ability to repair and re-work metal AM parts that may have defects. This work characterizes the microstructural and mechanical properties of metal parts produced through laser-based powder bed fusion (L-PBF) and electron beam powder bed fusion (EB-PBF) and then subsequently welded. The results show possibilities for gas tungsten arc welding (GTAW) and friction stir welding (FSW) as feasible rework and repair solutions for AM-printed AlSi10Mg, Ni 718, and Ti64. More research attention to this area will improve the viability of L-PBF and electron beam melting AM technology for energy applications.
INTRODUCTION Additive manufacturing (AM) has the potential to revolutionize the way that metal parts are made for the energy industry. Reduced lead times, optimized part geometry, and cost and weight reductions with increased performance all drive interest in the technology. In order to fully industrialize the use of metal AM components, approaches for joining and repair will be required, particularly for energy applications where components can fill the entire build chamber, and assemblies including AM components can easily be many cubic meters in size. Metal powder bed fusion (PBF) is a subset of AM whereby a laser or electron beam is used to consolidate metal in powder form to construct threedimensional elements. PBF techniques share the
(Received August 10, 2020; accepted October 6, 2020)
basic principles of all AM techniques (e.g., layer-bylayer fabrication directly from 3D model data), as well as common advantages such as cost-effective customization and reduced assembly. PBF processes have a significant advantage over many other AM processes in that they have the ability to print very fine and detailed components in industrial metal alloys.1 Large PBF-built parts are expensive and can easily cost $20,000 USD and more depending on post-processing complexity and alloy system. Saving the cost and time of a replacement print for a partially failed build or extending the life of parts in circulati
Data Loading...
