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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing: Advanced Characterization With Synchrotron, Neutron, and In Situ Laboratory-scale Techniques IV
Presentation Title Development of residual stresses in an additively manufactured Al-Ce based alloy with a high fraction of intermetallic particles
Author(s) Jovid Rakhmonov, Chris Fancher, Dunji Yu, Ke An, Alex Plotkowski, Amit Shyam
On-Site Speaker (Planned) Jovid Rakhmonov
Abstract Scope A new Al-Ce-Ni-Mn-Zr alloy designed for laser powder-bed fusion process exhibits high fatigue and creep resistance up to 400 °C, which is an increase of almost 200 °C in the temperature capability of aluminum alloys. Such significant improvement stems from a high fraction (~27 vol.%) of coarsening-resistant, fine intermetallic particles formed on solidification. High thermal gradients during solidification along with mismatch in thermal expansion coefficients of the matrix phase and intermetallic particles can make the alloy prone to thermal stress-induced cracking. Here, we conducted in situ neutron diffraction experiments during heating up to 500 °C and then cooling down to room temperature of additively manufactured Al-Ce-Ni-Mn-Zr alloy to gain insights into the extent of residual stresses and their origin. This talk will discuss various factors contributing to development of residual stresses and their relief based on the measured lattice strain evolution for Al matrix and intermetallic phase.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Aluminum, Solidification

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