Properties of Inconel 625 mesh structures grown by electron beam additive manufacturing

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:615

Article

List, F. A.¹  Dehoff, R. R.¹  Lowe, L. E.¹  Sames, W. J.² 

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Texas A&M Univ, College Stn, TX USA

关键词: Nickel based superalloys;    Inconel 625;    Electron beam melting;    Additive manufacturing;    Mesh structures;    Mechanical characterization;   

DOI  :  10.1016/j.msea.2014.07.051

来源: Elsevier

【 摘 要 】

Relationships between electron beam parameters (beam current, beam speed, and beam focus) and physical properties (mass, diameter, elastic modulus, and yield strength) have been investigated for Inconel 625 mesh cubes fabricated using an additive manufacturing technology based on electron beam melting. The elastic modulus and yield strength of the mesh cubes have been systematically varied by approximately a factor of ten by changing the electron beam parameters. Simple models have been used to understand these relationships. Structural anisotropies of the mesh associated with the layered build architecture have been observed and may contribute, along with microstructural anisotropies, to the anisotropic mechanical properties of the mesh. Knowledge of this kind is likely applicable to other metal and alloy systems and is essential to rapidly realize the full potential of this burgeoning technology. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free