Laser powder bed fusion of the Mn-Cu alloys: Printability, microstructure, and mechanical properties

Zhao, Chunyang; Yang, Jyh‐Shinn; Li, Gu-Qiang; Wang, Zemin

doi:10.1016/j.jallcom.2021.163385

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…Columnar dendrite structure penetrating multiple cladding layers appeared in the sample. Zhao C Y et al [9] also found the columnar dendrites in the Mn-Cu binary alloys fabricated by SLM. Based on the classical solidification theory, the morphology of primary grain is mainly determined by solidification rate and temperature gradient.…”

Section: Methodsmentioning

confidence: 88%

Microstructure and mechanical properties of Mn-Cu based damping alloy fabricated by laser melting deposition

Liu

Liang

et al. 2022

J. Phys.: Conf. Ser.

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The M2052 (Mn-20Cu-5Ni-2Fe, at%) damping alloy specimen was prepared by laser melting deposition (LMD). And we studied the mechanical properties and microstructure of M2052 alloy. Columnar dendrite penetrating multiple cladding layers appeared in the as-deposited sample, and the size of dendrite tends to coarsen with the increase of laser power. Microsegregation and martensitic transformation occurs in the as-deposited M2052 alloy. The tensile strength of samples in different directions under the same process, and in the same direction under different processes is all exceeds 500 MPa. The fracture surfaces exhibit intergranular fracture model. This work shows great potential for fabricating Mn-Cu based damping alloy by LMD technology.

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Section: Methodsmentioning

confidence: 88%

Microstructure and mechanical properties of Mn-Cu based damping alloy fabricated by laser melting deposition

Liu

Liang

et al. 2022

J. Phys.: Conf. Ser.

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“…[31,32] The mechanical (i.e., tensile properties) and functional properties (i.e., damping capacity and shape recovery ratio) of the SLMed Mn-30 wt% Cu alloys followed by heat treatment were superior to those of the commercial multicomponent counterparts. [31,32] Zhao et al [33] investigated the formability, phase constitution, and mechanical properties of Mn-Cu alloys with the Mn concentration ranging from 63-82 wt% during the SLM process. Yan et al also developed the MnCuNiFe-CuAlNiFeMn gradient alloy using laser engineering net shaping technology.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical and Functional Behaviors of Mn–15 wt%Cu Alloy Produced by Selective Laser Melting

Wei,

Yang,

Wang

et al. 2023

Adv Eng Mater

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Mn–Cu‐based alloys possess excellent mechanical and functional properties (damping capacity and shape memory effect). This work utilizes a typical additive manufacturing technique, selective laser melting (SLM), to fabricate Mn–15 wt%Cu alloys to explore the mechanical and functional behaviors. The results indicate that the γ‐(Mn, Cu) and a small amount of γ′‐(Mn, Cu) phase are the main phase compositions in the as‐SLMed Mn–15 wt%Cu alloy, as well as twins and second‐phase precipitation particles. The microstructure shows a fine cellular γ‐(Mn, Cu) dendrite with primary dendrite spacing of ≈0.9 μm in the columnar grains with a size of ≈8 μm. The martensitic transformation start temperature (MS) and phase transformation hysteresis are ≈132.6 and ≈5.1 °C, respectively. The existing nanoscale chemical segregations of Mn and Cu are attributed to the spinodal decomposition of γ‐(Mn, Cu). A compositional modulation is observed with a wavelength of ≈20 nm and an amplitude fluctuation of Mn (55–85 wt%) and Cu concentrations (15–45 wt%). Finally, the as‐SLMed Mn–15 wt%Cu alloy boasts good tensile properties (359, 268 MPa, and 3.6%), damping (internal friction of 0.032 when the strain amplitude is 9 × 10−4), and shape memory performances (one‐way ηow = 37–48%, and two‐way ηtw = 16–20% under the pre‐deformation strain of 2–3%).

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Predicting the chemical homogeneity in laser powder bed fusion (LPBF) of mixed powders after remelting

Brodie

Hutchinson

2023

Additive Manufacturing

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Laser powder bed fusion of the Mn-Cu alloys: Printability, microstructure, and mechanical properties

Cited by 11 publications

References 37 publications

Microstructure and mechanical properties of Mn-Cu based damping alloy fabricated by laser melting deposition

Microstructure and mechanical properties of Mn-Cu based damping alloy fabricated by laser melting deposition

The Mechanical and Functional Behaviors of Mn–15 wt%Cu Alloy Produced by Selective Laser Melting

Predicting the chemical homogeneity in laser powder bed fusion (LPBF) of mixed powders after remelting

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