Comparison of electron beam and laser beam powder bed fusion additive manufacturing process for high temperature turbine component materials

Dryepondt, Sebastien N¹  Pint, Bruce A¹  Ryan, Daniel² 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States);Solar Turbines, Inc., San Diego, CA (United States)

关键词: laser melting;    electron beam melting;    alloy X;   

DOI  :  10.2172/1248786
RP-ID  :  ORNL/TM--2016/47
PID  :  OSTI ID: 1248786
Others  :  Other: ED2802000
Others  :  CEED492

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The evolving 3D printer technology is now at the point where some turbine components could be additive manufactured (AM) for both development and production purposes. However, this will require a significant evaluation program to qualify the process and components to meet current design and quality standards. The goal of the project was to begin characterization of the microstructure and mechanical properties of Nickel Alloy X (Ni-22Cr-18Fe-9Mo) test bars fabricated by powder bed fusion (PBF) AM processes that use either an electron beam (EB) or laser beam (LB) power source. The AM materials produced with the EB and LB processes displayed significant differences in microstructure and resultant mechanical properties. Accordingly, during the design analysis of AM turbine components, the specific mechanical behavior of the material produced with the selected AM process should be considered. Comparison of the mechanical properties of both the EB and LB materials to those of conventionally processed Nickel Alloy X materials indicates the subject AM materials are viable alternatives for manufacture of some turbine components.