Dynamic behaviour of high strength steel parts developed through laser assisted direct metal deposition

Riza, Syed H.; Masood, Syed H.; Wen, Cuié; Ruan, Dong; Xu, Shanqing

doi:10.1016/j.matdes.2014.08.026

Cited by 26 publications

(6 citation statements)

References 29 publications

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“…Recently, this has instigated interest into investigating the dynamic responses of additive manufactured parts, which has shown that the dynamic mechanical responses of the additive manufactured parts were different from those under quasi-static conditions, namely the strain rate hardening effect [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Liu

Zhu

et al. 2021

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 99%

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Liu

Zhu

et al. 2021

Materials Science and Engineering: A

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“…The choice of filament material is also crucial, as it affects both the structure's porosity and mechanical properties. Support structures may be needed to prevent collapsing during production, debinding, and sintering, and their removal can pose challenges [93][94][95]. AM lattice structures have outperformed cellular structures produced by other manufacturing methods with equivalent porosity due to the AM process's greater geometric control and predictability [96][97][98].…”

Section: Manufacture and Design Considerations For Fff With Metallic ...mentioning

confidence: 99%

Fused Filament Fabrication for Metallic Materials: A Brief Review

Costa,

Sequeiros,

Vieira

2023

Materials

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Fused filament fabrication (FFF) is an extrusion-based additive manufacturing (AM) technology mostly used to produce thermoplastic parts. However, producing metallic or ceramic parts by FFF is also a sintered-based AM process. FFF for metallic parts can be divided into five steps: (1) raw material selection and feedstock mixture (including palletization), (2) filament production (extrusion), (3) production of AM components using the filament extrusion process, (4) debinding, and (5) sintering. These steps are interrelated, where the parameters interact with the others and have a key role in the integrity and quality of the final metallic parts. FFF can produce high-accuracy and complex metallic parts, potentially revolutionizing the manufacturing industry and taking AM components to a new level. In the FFF technology for metallic materials, material compatibility, production quality, and cost-effectiveness are the challenges to overcome to make it more competitive compared to other AM technologies, like the laser processes. This review provides a comprehensive overview of the recent developments in FFF for metallic materials, including the metals and binders used, the challenges faced, potential applications, and the impact of FFF on the manufacturing (prototyping and end parts), design freedom, customization, sustainability, supply chain, among others.

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“…where p is density, c p is heat capacity (c p = 500 J/kg K [28]), σ is stress, dε is strain interval, and η = 0.9 is the Taylor-Quinney parameter, which describes the conversion rate of mechanical energy into heat [8,10]. The temperature rise caused by plastic deformation depends on all parameters/variables that affect the value of the plastic stress flow of the material.…”

Section: Shpb Experimentsmentioning

confidence: 99%

“…Many construction materials, including 316L steel, are highly sensitive to the strain rate. There are only a few methods that can be used to test material properties at a high strain rate, and the most common in the literature is the method that employs a modified Hopkinson bar [10][11][12][13]. Publications on the dynamic properties of materials mainly focus on the macroscopic description of the effect of the strain rate on material behavior.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution of 316L Steel Prepared with the Use of Additive and Conventional Methods and Subjected to Dynamic Loads: A Comparative Study

et al. 2020

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The mechanical properties and microstructure evolution caused by dynamic loads of 316L stainless steel, fabricated using the Laser Engineered Net Shaping (LENS) technique and hot forging method were studied. Full-density samples, without cracks made of 316L stainless steel alloy powder by using the LENS technique, are characterized by an untypical bi-modal microstructure consisting of macro-grains, which form sub-grains with a similar crystallographic orientation. Wrought stainless steel 316L has an initial equiaxed and one-phase structure, which is formed by austenite grains. The electron backscattered diffraction (EBSD) technique was used to illustrate changes in the microstructure of SS316L after it was subjected to dynamic loads, and it was revealed that for both samples, the grain refinement increases as the deformation rate increases. However, in the case of SS316L samples made by LENS, the share of low-angle boundaries (sub-grains) decreases, and the share of high-angle boundaries (grains of austenite) increases. Dynamically deformed wrought SS316L is characterized by the reverse trend: a decrease in the share of high-angle boundaries and an increase in the share of low-angle boundaries. Moreover, additively manufactured SS316L is characterized by lower plastic flow stresses compared with hot-forged steel, which is caused by the finer microstructure of wrought samples relative to that of additive samples. In the case of additively manufactured 316L steel samples subjected to a dynamic load, plastic deformation occurs predominantly through dislocation slip, in contrast to the wrought samples, in which the dominant mechanism of deformation is twinning, which is favored by a high deformation speed and low stacking fault energy (SFE) for austenite.

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Dynamic behaviour of high strength steel parts developed through laser assisted direct metal deposition

Cited by 26 publications

References 29 publications

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Fused Filament Fabrication for Metallic Materials: A Brief Review

Microstructure Evolution of 316L Steel Prepared with the Use of Additive and Conventional Methods and Subjected to Dynamic Loads: A Comparative Study

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