Compression Behavior of M2052 Alloy Lattice Structures Fabricated by Selective Laser Melting

The M2052 alloy (Mn‐20Cu‐5Ni‐2Fe at%) exhibits excellent damping capacity and favorable mechanical strength, making it a promising candidate for vibration damping and energy absorption. However, its potential in lattice structures has not been reported to date. In this article, M2052 alloy lattice structures are fabricated via selective laser melting to evaluate their mechanical properties and energy absorption capabilities. Three lattice architectures with comparable relative densities are designed and manufactured: body‐centered cubic (BCC), BCC with vertical struts (BCCZ), and reinforced hollow BCCZ (RHBCCZ) featuring hollow struts and strengthening ribs. Quasi‐static compression tests and finite element simulations are conducted to analyze their mechanical responses and deformation mechanisms. Furthermore, the effects of heat treatment on the compressive properties and microstructural evolution of BCC lattices are investigated. Results demonstrate that the RHBCCZ structure delivers optimal performance, with a Young's modulus of 1506.3 MPa, yield strength of 18.41 MPa, and maximum energy absorption of 22.69 J cm −3 . Heat treatment enhanced the yield strength and altered the deformation mode of the lattice. This article highlights the potential of M2052 alloy in load‐bearing, energy‐absorbing, and lightweight structural applications.