Evolution of Aluminum Alloys Structure at Production Phases of 3D Products by Methods of Additive Technologies

Mann, Victor; Krokhin, Aleksandr; Alabin, A. N.; Zmanovskiy, Sergey V.; Konkevich, V. Yu.; Redkin, Ivan

doi:10.1007/978-3-319-51493-2_6

Cited by 3 publications

(5 citation statements)

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“…The fracture surface information from the additional tests were used to correlate the crack initiating defect features with the fatigue lives. Tests were considered concluded upon final fracture, and for any that exceeded 10 7 reversals, the tests were stopped and considered as runouts. Fracture surfaces were examined by an SEM to measure the size and determine the type of the crack initiating defects.…”

Section: Materials and Experimentsmentioning

confidence: 99%

“…Due to the unique micro‐/defect‐structures of AlSi10Mg processed by L‐PBF, typical heat treatments (HT) used for wrought counterparts may not always be effective. For instance, the high cooling rates of the L‐PBF process induces cellular networks of Si‐rich inter‐dendritic regions 7,8 which can give rise to improved tensile properties compared to the artificially aged condition 9–11 …”

Section: Introductionmentioning

confidence: 99%

“…Despite some improvements in tensile properties, the as‐solidified fine dendritic microstructure may make the material more sensitive to surface notches and volumetric defects under cyclic loading 12,13 . As such, the fatigue performance of this material is not only often negatively impacted by the AM induced defects, including gas‐entrapped pores and lack‐of‐fusion defects, 14,15 but it may also be inferior in the non‐heat treated (NHT) and stress relieved (SR) condition compared to the aged condition 7,15–18 . However, discrepancies still exist in literature regarding the beneficial effect of standardized HTs, such as T6, on additively manufactured (AM) AlSi10Mg parts.…”

Section: Introductionmentioning

confidence: 99%

“…12,13 As such, the fatigue performance of this material is not only often negatively impacted by the AM induced defects, including gasentrapped pores and lack-of-fusion defects, 14,15 but it may also be inferior in the non-heat treated (NHT) and stress relieved (SR) condition compared to the aged condition. 7,[15][16][17][18] However, discrepancies still exist in literature regarding the beneficial effect of standardized HTs, such as T6, on additively manufactured (AM) AlSi10Mg parts. For instance, Zhang et al 19 performed stress relief (300 C for 2 h), solution treatment (530 C for 1 h), and artificial aging (170 C for 12 h) on L-PBF specimens and concluded that all HTs, including T6, diminish fatigue properties when compared with the NHT condition.…”

mentioning

confidence: 99%

“…[4][5][6] Due to the unique micro-/defectstructures of AlSi10Mg processed by L-PBF, typical heat treatments (HT) used for wrought counterparts may not always be effective. For instance, the high cooling rates of the L-PBF process induces cellular networks of Si-rich inter-dendritic regions 7,8 which can give rise to improved tensile properties compared to the artificially aged condition. [9][10][11] Despite some improvements in tensile properties, the as-solidified fine dendritic microstructure may make the material more sensitive to surface notches and volumetric defects under cyclic loading.…”

mentioning

confidence: 99%

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Tensile and fatigue behaviors of additively manufactured AlSi10Mg: Effect of solutionizing and aging heat treatments

Baig

Ghiaasiaan

Shao

et al. 2023

Fatigue Fract Eng Mat Struct

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The effects of various heat treatments on the microstructure and mechanical properties of laser beam powder bed fused AlSi10Mg were investigated. Specimens were solutionized at three different temperatures of 425 C, 475 C, and 525 C followed by natural aging (T4) prior to microstructural and mechanical characterization. In addition, the effect of aging was studied by artificially aging (i.e., T7) some of the solutionized specimens at 165 C. Solutionizing at all temperatures was observed to fully dissolve the additive manufacturing (AM) induced dendritic microstructure, leaving bulky Si and needle-shaped β-AlFeSi precipitates in the grain interiors and boundaries. Tensile results revealed that T4 specimens exhibited more ductility, while T7 specimens showed substantially higher strengths with slightly reduced ductility. Interestingly, no significant effect of heat treatment on strain-life fatigue behavior was observed. Fractography found the Si particles to be responsible for tensile fracture, while AM volumetric defects were the main initiators of fatigue cracks.aluminum, fatigue, laser beam powder bed fusion (LB-PBF/L-PBF), microstructure, tensile Highlights• Effect of heat treatments on tensile and fatigue behavior of L-PBF AlSi10Mg studied.• T7 treatment led to higher tensile strengths than T4, but similar fatigue lives.• Tensile failure initiated from Si-particle fracture or debonding from matrix.• Fatigue life was affected by the size of crack initiators, that is, volumetric defects. | INTRODUCTIONAluminum alloys are commonly used in various industries because of their superior strength/stiffness to weight ratio compared to other alloys. 1,2 Among various Al alloys, AlSi10Mg as a cast alloy 2 has historically been used to fabricate complex/thin-walled geometries. Recently, processing AlSi10Mg through additive manufacturing (AM) has shown to be very promising as intricate, lightweight parts can be manufactured without

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Section: Materials and Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Tensile and fatigue behaviors of additively manufactured AlSi10Mg: Effect of solutionizing and aging heat treatments

Baig

Ghiaasiaan

Shao

et al. 2023

Fatigue Fract Eng Mat Struct

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Progress in materials for 3D printing

Rashika,

S. Atheena,

Sudherson

et al. 2024

JMS

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The realm of 3D printing is rapidly evolving, offering a wide range of options from typical thermoplastics to advanced graphene-based composites. This technology improves production efficiency and gives consumers more control over customizing products and specifications. However, alongside its transformative potential, 3D printing also presents challenges, such as potential impacts on manufacturing jobs and security issues. Since its modest beginnings in developing visualization models, 3D printing has evolved to transform the manufacturing of distinct devices, implants, tissue engineering scaffolds, and drug delivery systems. This paper explores the most recent progress in 3D printing materials, including smart materials, ceramics, electronics, biomaterials, and composites, emphasizing the significance of adapting to changing materials and product requirements. It delves into the complex connection between printing parameters and the characteristics of printed composite parts, providing new opportunities to improve the strength and functionality of 3D-printed components. This review highlights how 3D printing can be utilized in various industries, such as medical devices and explosives research, using materials such as titanium, aluminum, carbon fiber, and thermoplastic polyurethanes. With the continuous growth of the 3D printing field, it is essential to adopt new methods and materials to fully realize its impact on the future of manufacturing and product development.

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Influence of Surface Preparation and Heat Treatment on Mechanical Behavior of Hybrid Aluminum Parts Manufactured by a Combination of Laser Powder Bed Fusion and Conventional Manufacturing Processes

Tommasi

Maillol

Bertinetti

et al. 2021

Metals

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Today, in industry, laser-based additive manufacturing (LAM) is used to produce high-value parts of very complex designs that are not manufacturable by conventional technologies; this process’ low production throughput and high cost prevent it from being used more extensively. One way to exploit the benefits of LAM in industry is to have it combined with lower-cost manufacturing technologies. In a hybrid approach, LAM can be integrated within an assembly line’s welding station to complete the manufacturing of a product by depositing a foreign material on a substrate only where needed, or by building structures of complex 3D geometries (e.g., lattice structures) directly onto inexpensive preforms. To pave the way for using a hybrid approach design in real applications, as a prime requirement, the chosen technology must grant comparable structural integrity to its products with respect to its conventional counterparts. In this work, different types of surface pretreatments for substrates were investigated as a key enabling factor to tailor the bi-material system’s mechanical properties in use. Hybrid samples were made by depositing AlSi10Mg by direct metal laser sintering onto A356-T6 aluminum bases prefabricated by casting and forging, and their properties were compared with fully homogeneous samples that were conventionally produced. Specifically referring to the automotive use case, both these alloy grades were chosen for their extensive use in the production of motor vehicles. The testing campaign, characterized by microscopy, mechanical testing, and fatigue, revealed that the structural integrity of the hybrid samples is comparable with the benchmarks when standard heat treatments are adopted. This result makes the prospect of the exploitation of the hybridization concept as conceived very promising for the future.

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Evolution of Aluminum Alloys Structure at Production Phases of 3D Products by Methods of Additive Technologies

Cited by 3 publications

References 2 publications

Tensile and fatigue behaviors of additively manufactured AlSi10Mg: Effect of solutionizing and aging heat treatments

Tensile and fatigue behaviors of additively manufactured AlSi10Mg: Effect of solutionizing and aging heat treatments

Progress in materials for 3D printing

Influence of Surface Preparation and Heat Treatment on Mechanical Behavior of Hybrid Aluminum Parts Manufactured by a Combination of Laser Powder Bed Fusion and Conventional Manufacturing Processes

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