Recycled Niobium-Aluminium (Nb2Al) Intermetallics Based Composite Design: An Experimental and Numerical Approach for Toughening Mechanism

ENGİNSOY H. M., Bayraktar E., Gatamorta F., Katundi D., Miskioglu I.

SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2021, Virtual, Online, 14 - 17 June 2021, pp.71-79 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1007/978-3-030-86741-6_12
  • City: Virtual, Online
  • Page Numbers: pp.71-79
  • Keywords: Finite element analyses, Fracture toughness, Intermetallic composites, Nb-Al, SEM analyses, Sinter-forging
  • Çanakkale Onsekiz Mart University Affiliated: Yes


© 2022, The Society for Experimental Mechanics.In this project, design of niobium-aluminium (Nb2Al) intermetallics based composites is proposed by using the fresh scrap recycled niobium and aluminium alloy AA7075. These compositions will be the target for aeronautical engineering applications for high temperature service conditions. Manufacturing of these composites is an important engineering case for tailored behaviour of the composites produced through combined method of powder metallurgy route; sintering followed by forging. Different materials and operational (process) parameters will be used for optimization of the compositions. All of the analyses will be devoted to the static (compression, 3-point bending) test conditions. Microstructure analyses (matrix/interface) will be carried out by Scanning Electron Microscope (SEM). At this stage of the project, the primary objective would be to establish a continuum-based material model in order to capture the macroscopic behaviour of the targeted composite materials and numerically reproduce the results from the basic characterization tests (3P bending). The model will be implemented for Finite Element Analysis Software ABAQUS/Explicit as a user subroutine VUMAT for explicit nonlinear finite element calculations. The second step would be modelling of the microstructure of the proposed hybrid Nb2Al based composites and simulate the behaviour of several RVEs and see the effect of the sintered-forging and different ratios of reinforcing particulates.