High-cycle tension-tension fatigue performance of additively manufactured 17–4 PH stainless steel

Lawrence, Bradley D.; Henry, Todd C.; Phillips, Francis R.; Riddick, Jaret C.; Kudzal, Andelle

doi:10.1007/s00170-023-11146-1

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…In current research, studies investigating Atomic Diffusion Additive Manufacturing (ADAM), an MEAM process patented by Markforged Inc. (Boston, MA, USA), are predominately on stainless steel 17-4 PH [6][7][8][9][10][11][12][13][14][15][16][17], mostly with a focus on mechanical properties. Besides 17-4 PH, few studies investigate copper filaments [18][19][20], while research on other materials such as coldwork tool steel D2 [21] and Inconel 625 [22] is very scarce.…”

Section: Materials Extrusion 10%mentioning

confidence: 99%

Dimensional Accuracy and Mechanical Characterization of Inconel 625 Components in Atomic Diffusion Additive Manufacturing

Rosnitschek,

Stierle,

Orgeldinger

et al. 2024

Applied Mechanics

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Metal material additive manufacturing (MEAM) has risen in interest in the last five years as an alternative to powder bed processes. MEAM is promising for generating shelled components with defined infill structures, making it very interesting for lightweight engineering. Atomic Diffusion Additive Manufacturing (ADAM) is a filament-based MEAM process patented by Markforged Inc. that provides a closed process chain from preprocessing to the final sintering of printed green parts. This study focuses on Inconel 625, which is of high interest in the aerospace industry, and assesses its dimensional accuracy and tensile properties regarding different print orientations and solid, triangular, and gyroid infill structures. The results showed that neither the dimensional accuracy nor the sintering shrinkage was significantly influenced by the printing orientation or the infill structure. In the context of lightweight engineering, the infill structures proved beneficial, especially within the elastic region. Generally, triangular infill patterns resulted in higher stiffness, while gyroids led to more ductile specimens. A mass-related evaluation of tensile testing elucidates that with the aid of the infill structures, weight savings of 40% resulted in mechanical performance decreasing by only 20% on average, proving its high potential for lightweight design.

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Section: Materials Extrusion 10%mentioning

confidence: 99%

Dimensional Accuracy and Mechanical Characterization of Inconel 625 Components in Atomic Diffusion Additive Manufacturing

Rosnitschek,

Stierle,

Orgeldinger

et al. 2024

Applied Mechanics

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“…HCF is also regarded as "stress-life/stress-based" since stress is used for practical and historical purposes. The number of cycles determined in this case (suspension control arm) corresponds to an HCF paradigm, which is typically defined as a number of cycles counts needed until reaching a fatigue of more than 10 4 [24,25].…”

Section: Fatigue Life Predictionmentioning

confidence: 99%

Fatigue Life Uncertainty Quantification of Front Suspension Lower Control Arm Design

Abebe

Koo

2023

Vehicles

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The purpose of this study is to investigate the uncertainty of the design variables of a front suspension lower control arm under fatigue-loading circumstances to estimate a reliable and robust product. This study offers a method for systematic uncertainty quantification (UQ), and the following steps were taken to achieve this: First, a finite element model was built to predict the fatigue life of the control arm under bump-loading conditions. Second, a sensitivity scheme, based on one of the global analyses, was developed to identify the model’s most and least significant design input variables. Third, physics-based and data-driven uncertainty quantification schemes were employed to quantify the model’s input parameter uncertainties via a Monte Carlo simulation. The simulations were conducted using 10,000 samples of material properties and geometrical uncertainty variables, with the coefficients of variation ranging from 1 to 3%. Finally, the confidence interval results show a deviation of about 21.74% from the mean (the baseline). As a result, by applying systematic UQ, a more reliable and robust automobile suspension control arm can be designed during the early stages of design to produce a more efficient and better approximation of fatigue life under uncertain conditions.

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“…In the current research, studies investigating Atomic Diffusion Additve Manufacturing (ADAM), a MEAM process patented by Markforged Inc. (Boston, MA, USA), are predominately on the stainless steel 17-4 PH [6][7][8][9][10][11][12][13][14][15][16][17], mostly with a focus mechanical properties. Besides 17-4 PH, few studies investigate copper filaments [18][19][20], while research on other materials such as the coldwork tool steel D2 [21] and Inconel 625 [22] is very scarce.…”

Section: Introductionmentioning

confidence: 99%

Dimensional Accuracy and Mechanical Characterization of Inconel 625 components in Atomic Diffusion Additive Manufacturing

Rosnitschek,

Stierle,

Orgeldinger

et al. 2024

Preprint

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Additive manufacturing processes offer various options to fabricate metal parts, which show numerous ecological and technological advantages compared to formative and subtractive manufacturing methods. Due to quick availability and high accuracy, they are particularly suitable to produce complex prototypes. Metal fused deposition modeling is a relatively new material extrusion additive manufacturing technique based on the widely used fused filament deposition process. This study focuses on the Inconel 625 metal filament from Markforged Inc., it consists of a mixture of metal powder and a binder system, the latter being removed during washing and sintering. In this article, the mechanical properties of printed and sintered Inconel were investigated using tensile testing specimens with three different infill patterns, solid, triangular, and gyroid, printed in flatwise and upright direction. In addition, investigations into the dimensional accuracy of the printed specimens and the sintering shrinkage were carried out. The results showed that neither the dimensional accuracy nor the sintering shrinkage was significantly influenced by the printing orientation. In the context of lightweight engineering, the structures proofed beneficial especially within the elastic region. Generally, triangular infill patterns resulted in higher stiffness, while gyroids led to more ductile specimens. A mass-related evaluation of tensile testing elucidates that with aid of the infill structures weight savings of 40 % resulted in mechanical performance decreased by only 20 % on average.

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High-cycle tension-tension fatigue performance of additively manufactured 17–4 PH stainless steel

Cited by 6 publications

References 33 publications

Dimensional Accuracy and Mechanical Characterization of Inconel 625 Components in Atomic Diffusion Additive Manufacturing

Dimensional Accuracy and Mechanical Characterization of Inconel 625 Components in Atomic Diffusion Additive Manufacturing

Fatigue Life Uncertainty Quantification of Front Suspension Lower Control Arm Design

Dimensional Accuracy and Mechanical Characterization of Inconel 625 components in Atomic Diffusion Additive Manufacturing

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