3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

Andreacola, Francesca Romana; Capasso, Ilaria; Langella, A.; Brando, Giuseppe

doi:10.1016/j.heliyon.2023.e17698

Cited by 10 publications

(2 citation statements)

References 78 publications

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“…In addition, an important factor for the performance of the drill body is the hardness of its outer surfaces, which can subsequently be ensured by chemical-thermal treatment or thermal treatment. From reference [52], it is recommended to use a minimum wall thickness of 2 mm.…”

Section: Methodology For Topological Optimization Of the Drill Bodymentioning

confidence: 99%

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Lubimyi,

Chepchurov,

Polshin

et al. 2024

JMMP

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This article describes the technology for manufacturing a metal composite structure of a metal-cutting tool body. The main problem with using metal 3D-printing is its prohibitively high cost. The initial data for carrying out finite element calculations are presented, in particular, the calculation and justification of the selected loads on the drill body arising from metal-cutting forces. The described methodology for designing a digital model of a metal-cutting tool for the purpose of its further production using SLM 3D metal printing methods facilitates the procurement of a digital model characterized by a reduced weight and volume of material. The described design technology involves the production of a thin-walled outer shell that forms the external technological surfaces necessary for the drill body, as well as internal structural elements formed as a result of topological optimization of the product shape. Much attention in this article is paid to the description of the technology for filling internal cavities with a viscous metal polymer, formed as a result of the topological optimization of the original model. Due to this design approach, it is possible to reduce the volume of 3D metal printing by 32%, which amounts to more than USD 135 in value terms.

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Section: Methodology For Topological Optimization Of the Drill Bodymentioning

confidence: 99%

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Lubimyi,

Chepchurov,

Polshin

et al. 2024

JMMP

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“…Regarding additive manufacturing [22,23], its layer-based manufacturing process can better produce complex geometries (including thin-walled structures [24,25] and metamaterials [26,27]), but manufacturability restrictions still exist that should be carefully addressed during the design stage [28,29]. Extensive research efforts were put toward addressing the selfsupport issue [30,31], material anisotropy issue [32][33][34][35][36][37], connectivity issue of multi-scale structures [38,39], residual stress issue for metal parts [40][41][42][43], etc. These attempts improve the cost-efficiency and manufacturability of the topological parts for additive and hybrid manufacturing [44].…”

Section: Introductionmentioning

confidence: 99%

Topology Optimization Method of Stamping Structures Based on the Directional Density Field

Yuan,

Geng,

Wang

et al. 2024

Materials

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The stamping process produces thin-walled structures that, in general, have uniform wall thickness and no enclosed cavity. However, it is difficult to satisfy the above geometric requirements with the current density-based topology optimization method, since configuring the related geometric constraints is challenging. In order to solve this problem, a topology optimization method for stamping structures based on a directional density field is proposed. Specifically, the directional density field is developed to enable the adding and removing of materials only along the stamping direction, so as to avoid internal voids and concave features. The geometric control for uniform wall thickness is realized by tuning the truncation threshold of the Heaviside projection that processes the directional density field into the 0–1 binary field. At the same time, a calibrated filter radius of the truncation thresholds will facilitate the drawing angle control of the stamping ribs. The effectiveness of the established method has been verified by a number of numerical case studies. Results show that the proposed method can perform topology optimization for stamping structures with tunable uniform thickness and drawing angle control of the ribs. No internal voids or undercuts appear in the results. The results also disclose that a constant truncation threshold increment does not guarantee uniform wall thickness, and varying the threshold increments through surface offset and polynomial fitting is necessary.

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Numerical Modelling of a 3D-Printed Metal Damper Designed Using Topological and Geometrical Optimization Algorithms

Andreacola,

Brando

2024

Lecture Notes in Civil Engineering

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3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

Cited by 10 publications

References 78 publications

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Topology Optimization Method of Stamping Structures Based on the Directional Density Field

Numerical Modelling of a 3D-Printed Metal Damper Designed Using Topological and Geometrical Optimization Algorithms

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