CuCrZr processed by laser powder bed fusion—Processability and influence of heat treatment on electrical conductivity, microstructure and mechanical properties

Wegener, Thomas; Koopmann, Julian; Richter, Julia; Krooß, P.; Niendorf, Thoralf

doi:10.1111/ffe.13527

Cited by 34 publications

(11 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Three LCF tests per condition were performed on flat dog-bone shaped specimens being characterized by gauge section dimensions of 12 mm × 3 mm × 1.5 mm at RT. The specimen geometry employed was numerously used in literature (e.g., [33,[47][48][49]) but, however, has not been captured by an official standard. In order to further assess the material behavior, additional tensile tests have been conducted and analyzed using DIC.…”

Section: Methodsmentioning

confidence: 99%

Microstructural and mechanical properties of AlSi10Mg: Hybrid welding of additively manufactured and cast parts

Krochmal

Rajan²,

Moeini³

et al. 2022

Journal of Materials Research

View full text Add to dashboard Cite

Welding and joining of hybrid components consisting of additively manufactured (AM) parts and conventionally processed parts offer new opportunities in structural design. In the present study, AlSi10Mg specimens were fabricated using two different manufacturing processes, i.e., laser-based powder-bed fusion of metals (PBF-LB/M) and casting, and welded by means of friction stir welding (FSW). Material strength of dissimilar welded joints was found to be governed by the as-cast material, which is characterized by a very coarse microstructure resulting in inferior hardness and tensile properties. During fatigue testing, cast-cast specimens performed slightly better than their hybrid AM-cast counterparts with respect to lifetime, being rationalized by most pronounced strain inhomogeneities in the AM-cast specimens. With the aim of cost reduction, FSW can be employed to fabricate graded large parts as long as the AM as-built material is placed in the region demanding superior cyclic load-bearing capacity. Graphical abstract

show abstract

Section: Methodsmentioning

confidence: 99%

Microstructural and mechanical properties of AlSi10Mg: Hybrid welding of additively manufactured and cast parts

Krochmal

Rajan²,

Moeini³

et al. 2022

Journal of Materials Research

View full text Add to dashboard Cite

show abstract

“…Figure 1) with the loading axis oriented perpendicular to the building direction (BD). The specimen geometry employed has been widely used in the literature (e.g., [29][30][31][32]). However, it has not been captured by an official standard.…”

Section: Mechanical Testingmentioning

confidence: 99%

Micromechanical Modeling of AlSi10Mg Processed by Laser-Based Additive Manufacturing: From as-Built to Heat-Treated Microstructures

Rajan¹,

Krochmal

Wegener

et al. 2022

Materials

Self Cite

View full text Add to dashboard Cite

The unique microstructure of the alloy AlSi10Mg produced by the laser-based powder bed fusion of metals (PBF-LB/M) provides high-strength and high-strain-hardening capabilities of the material. The microstructure and mechanical properties of 3D-printed, i.e., additively manufactured, AlSi10Mg are significantly altered by post-building heat-treatment processes applied in order to tailor the final properties of the parts. Using an accurate computational model to predict and improve the mechanical performance of 3D-printed samples considering their microstructural features can accelerate their employment in envisaged applications. The present study aims to investigate the correlation between microstructural features and the mechanical behavior of as-built, direct-aged, and T6 heat-treated samples of PBF-LB/M AlSi10Mg under tensile loading using experiment and microstructure-sensitive modeling approaches. Nanoindentation tests are used to calibrate the parameters of the constitutive models for the Al and Si-rich phases. The experimental investigations revealed that heat treatment significantly changes the sub-grain morphology of the Si-rich phase, and this can have a considerable effect on the mechanical behavior of the components. The effect of the modeling of the Si-rich phase in the representative volume elements on the prediction of mechanical behavior is investigated using the J2 plasticity model. The combination of the crystal plasticity model for Al and the J2 plasticity model for the Si-rich phase is used to predict the tensile properties of the as-built and heat-treated states. The predicted results are in good agreement with the experimental results. This approach can be used to understand the microstructure–property relationship of PBF-LB/M AlSi10Mg and eventually tailor heat treatment for PBF-LB/M AlSi10Mg based on the requirement of the application.

show abstract

“…Some alloys produced through AM techniques, including high-entropy alloys, Cu-based shape memory alloys, titanium alloys, and stainless steels, are currently employed in practical engineering fields such as aerospace and medical devices. Studies have also focused on the process, heat treatment, microstructure, properties, and defects such as cracks in laser AM [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement for the CuCrZr Alloy Produced by Laser Powder Bed Fusion Using the Remelting Process

Xu,

Zhang,

Zhao

et al. 2024

Materials

View full text Add to dashboard Cite

Owing to the high optical reflectivity of copper powder, the high-performance fabrication of copper alloys in the laser additive manufacturing (AM) field is problematic. To tackle this issue, this study employs the remelting process during laser powder bed fusion AM to fabricate defect-free and high-performance CuCrZr alloy. Compared to the non-remelting process, the remelting process yields finer grains, smaller precipitates, denser dislocations, and smaller dislocation cells. It realizes not only the dense molding of high laser reflectivity powders but also excellent mechanical properties and electrical conductivity (with an ultimate tensile strength of 329 MPa and conductivity of 96% IACS) without post-heat treatment. Furthermore, this study elucidates the influence of complex thermal gradients and multiple thermal cycles on the manufacturing process under the remelting process, as well as the internal mechanisms of microstructure evolution and performance improvement.

show abstract

CuCrZr processed by laser powder bed fusion—Processability and influence of heat treatment on electrical conductivity, microstructure and mechanical properties

Cited by 34 publications

References 75 publications

Microstructural and mechanical properties of AlSi10Mg: Hybrid welding of additively manufactured and cast parts

Microstructural and mechanical properties of AlSi10Mg: Hybrid welding of additively manufactured and cast parts

Micromechanical Modeling of AlSi10Mg Processed by Laser-Based Additive Manufacturing: From as-Built to Heat-Treated Microstructures

Performance Improvement for the CuCrZr Alloy Produced by Laser Powder Bed Fusion Using the Remelting Process

Contact Info

Product

Resources

About