Lattice structures of Cu-Cr-Zr copper alloy by selective laser melting: Microstructures, mechanical properties and energy absorption

Ma, Zhibo; Zhang, Zhengwen; Liu, Fei; Jiang, Jinbao; Zhao, Miao; Zhang, Tao

doi:10.1016/j.matdes.2019.108406

Cited by 82 publications

(27 citation statements)

References 37 publications

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“…From that, there are three stages in the deformation of the lattice structure, including the linear elastic stage, the elastic-plastic stage and the densification stage in all curves, which are identical to previous researches [46]. Stresses of all the curves increase with the strain increased in the initial of compression and then drop rapidly, which depend on the types of material, and significantly differ from those plastic materials whose stress plateaus exhibit long plateaus without large stress drops, such as Cu-Cr-Zr [29]. As shown in Fig.…”

Section: Compressive Deformation Mechanismsupporting

confidence: 79%

“…Some scholars also have been attempting to design the FGS through designing CAD model [26] and biological reverse [27]. And many performances of lattice structure have been discussed, such as statics [28][29][30][31], dynamics and fatigue characteristics [32]. Applications for special needs have been described previously and will not be repeated here.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

Zhang

Zhao

et al. 2021

Int J Adv Manuf Technol

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：Compared with uniform structures, functionally graded lattice structures can control mechanical properties through varying structure and volume fraction. In this study, a three-period minimal surface method was used to generate functional lattice structure with linear or quadratic function (LF or QF) gradient strategy in the forming direction, and the samples were fabricated by selective laser melting (SLM) using Ti-6Al-4V metal powder. The mechanical properties, deformation behavior, and energy absorption performance of graded lattice, LF and QF I-Wrapped Package (IW-P) lattice structures were systematically investigated through experiment and finite element analysis (FEA). Based on the experiment and numerical simulation results, the LF lattice structure shows higher elastic modules and yield strength during small strain period. And the merits of performance increased layer-by-layer under large strain. Additionally, the simulation results based on Johnson-Cook and failure model show that this model can reflect structural compression deformation behavior and mechanical performance prediction. Furthermore, the elastic modulus of LF lattice structure is higher than uniform lattice structures by nearly 61.52% under the same volume fraction. Thence, the LF or QF lattice structures have better support performance under small strain and stronger energy absorption capacity under large strain with the same volume fraction compared with other lattice structures, which shows superior potential to be applied to manufacture protective devices or vibration damping devices.

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Section: Compressive Deformation Mechanismsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

Zhang

Zhao

et al. 2021

Int J Adv Manuf Technol

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“…Figure 16 shows changes in energy absorption capacities of lattice structures consisting of different materials as a function of the bulk density. The AlSi10Mg lattice structures with the BCC, TO, and Hexa unit cells were shown together with various lattice structures made of 316L stainless steel [ 22 , 31 ], Cu-Cr-Zr copper alloy [ 32 ], Ti-6Al-4V alloy [ 2 , 33 ] and Al-12Si alloy [ 8 ]. Aluminum alloy lattice structures exhibit a lower energy absorption capacity compared to titanium alloy lattice structures, but a higher capacity than stainless steel and copper alloy lattice structures.…”

Section: Discussionmentioning

confidence: 99%

Compressive Properties of Al-Si Alloy Lattice Structures with Three Different Unit Cells Fabricated via Laser Powder Bed Fusion

et al. 2020

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In the present study, in order to elucidate geometrical features dominating deformation behaviors and their associated compressive properties of lattice structures, AlSi10Mg lattice structures with three different unit cells were fabricated by laser powder bed fusion. Compressive properties were examined by compression and indentation tests, micro X-ray computed tomography (CT), together with finite element analysis. The truncated octahedron- unit cell (TO) lattice structures exhibited highest stiffness and plateau stress among the studied lattice structures. The body centered cubic-unit cell (BCC) and TO lattice structures experienced the formation of shear bands with stress drops, while the hexagon-unit cell (Hexa) lattice structure behaved in a continuous deformation and flat plateau region. The Hexa lattice structure densified at a smaller strain than the BCC and TO lattice structures, due to high density of the struts in the compressive direction. Static and high-speed indentation tests revealed that the TO and Hexa exhibited slight strain rate dependence of the compressive strength, whereas the BCC lattice structure showed a large strain rate dependence. Among the lattice structures in the present study, the TO lattice exhibited the highest energy absorption capacity comparable to previously reported titanium alloy lattice structures.

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“…Similar results were reported for TPMS [ 29 ] and face‐centered cubic (FCC) lattice structures. [ 40 ] This can be attributed to the stronger struts within specimens with higher relative densities leading to higher compressive strength for the whole structure and a larger area under the stress–strain curves. Ideal energy absorption efficiency curves of specimens are shown in Figure 13b.…”

Section: Resultsmentioning

confidence: 99%

Compressive Properties of 316L Stainless Steel Topology‐Optimized Lattice Structures Fabricated by Selective Laser Melting

Tan

et al. 2020

Adv Eng Mater

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Some lattice structures with different relative densities (0.15–0.5) are designed by topology optimization and fabricated by selective laser melting. The temperature history of lattice structures is monitored experimentally to reveal the forming reason of the deviation of relative densities. The effect of relative densities on compressive properties of lattice structures, including mechanical properties, failure mechanism, and energy absorption capabilities, are systematically investigated. The results show that compressive properties of lattice structures vary dramatically with the changing of relative densities. Due to the existence of surface‐shaped struts, the compressive strength of topology‐optimized lattice structures has superior performance comparing to most of the other structures with rod‐shaped struts. The failure mechanism of lattice structures can be changed from shear‐ to bending‐dominated when increasing relative densities as a result of decreasing the thickness of struts. A systematic investigation of the fracture generation of struts is conducted through both deformation analysis and the finite element method. The fitting curves are established successfully to predict the mechanical properties of designed lattice structures. The aforementioned results verify the feasibility of designing high‐performance cellular structures via topology optimization. Moreover, herein a comprehensive solution to tailor desired properties for satisfying the requirements of functional components is provided.

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Lattice structures of Cu-Cr-Zr copper alloy by selective laser melting: Microstructures, mechanical properties and energy absorption

Cited by 82 publications

References 37 publications

Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

Mechanical and energy absorption properties of functionally graded lattice structures based on minimal curved surfaces

Compressive Properties of Al-Si Alloy Lattice Structures with Three Different Unit Cells Fabricated via Laser Powder Bed Fusion

Compressive Properties of 316L Stainless Steel Topology‐Optimized Lattice Structures Fabricated by Selective Laser Melting

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