Comparison of the simulation results to the neutron imaging experimental data performed by the researchers (Courtesy Tremsin, AS; Gao, Y; Makinde, A; Bilheux, HZ; Bilheux, JC; An, K; Shinohara, T; and Oikawa, K, ‘Monitoring residual strain relaxation and preferred grain orientation of additively manufactured Inconel 625 by in-situ neutron imaging’)
Researchers from Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee, University of California, Berkeley; General Electric Global Research Center, Niskayuna, New York; and Japan Atomic Energy Agency, Ibaraki, Japan, have released a paper studying neutron scattering to measure internal strain in additively manufactured samples before, during and after annealing. Controlling residual strain in metal parts manufactured via Laser Beam Powder Bed Fusion (PBF-LB) helps prevent cracks and failures. The research was published as ‘Monitoring residual strain relaxation and preferred grain orientation of additively manufactured Inconel 625 by in-situ neutron imaging’ in the journal Additive Manufacturing.