Effect of binder jetting microstructure variability on low cycle fatigue behavior of 316L

Muhammad, Waqas; Batmaz, Rasim; Natarajan, Arunkumar; Martin, Étienne

doi:10.1016/j.msea.2022.142820

Cited by 17 publications

(5 citation statements)

References 21 publications

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“…Even lower values (1.08%) are reported in [31] for an optimized debinding and vacuum sintering and in [79], in which case the use of Hot Isostatic Pressing allowed reaching a fully dense condition (i.e., porosity < 0.1 %). According to the literature, the pores in the samples can be isolated spherical pores with a few irregular interconnected pores [32] or elongated pores with an elliptical shape, having their major axis aligned perpendicular to the build direction [79]. Unlike PBF and DED, the BJ process does not intrinsically favor (or aid) microstructural anisotropy, and the equiaxed grain structure is typically observed [56].…”

Section: Fatigue Of Bj and Fff 316lmentioning

confidence: 79%

“…Relative porosity may range between 1.7-5.6%, with the lowest values obtained under vacuum sintering [32]. Even lower values (1.08%) are reported in [31] for an optimized debinding and vacuum sintering and in [79], in which case the use of Hot Isostatic Pressing allowed reaching a fully dense condition (i.e., porosity < 0.1 %). According to the literature, the pores in the samples can be isolated spherical pores with a few irregular interconnected pores [32] or elongated pores with an elliptical shape, having their major axis aligned perpendicular to the build direction [79].…”

Section: Fatigue Of Bj and Fff 316lmentioning

confidence: 89%

“…In [77] LCF was instead considered in relation to HT parameters, determining coefficients of the Manson-Coffin equation for different conditions. Finally, a Strain-based approach was used in [79] for BJ 316L, testing machined specimens built horizontally, with or without HIP. LCF was investigated, showing that typical defects of BJ parts, like distributed fine residual pores, detrimental sigma phases, and carbides did not contribute to fatigue failure of the material.…”

Section: Strain-based Approaches and Lcfmentioning

confidence: 99%

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Fatigue Behavior of Additively Manufactured Stainless Steel 316L

Avanzini

2022

Materials

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316L stainless steel is the material of choice for several critical applications in which a combination of mechanical strength and resistance to corrosion is required, as in the biomedical field. Additive Manufacturing (AM) technologies can pave the way to new design solutions, but microstructure, defect types, and surface characteristics are substantially different in comparison to traditional processing routes, making the assessment of the long-term durability of AM materials and components a crucial aspect. In this paper a thorough review is presented of the relatively large body of recent literature devoted to investigations on fatigue of AM 316L, focusing on the comparison between different AM technologies and conventional processes and on the influence of processing and post-processing aspects in terms of fatigue strength and lifetime. Overall fatigue data are quite scattered, but the dependency of fatigue performances on surface finish, building orientation, and type of heat treatment can be clearly appreciated, as well as the influence of different printing processes. A critical discussion on the different testing approaches presented in the literature is also provided, highlighting the need for shared experimental test protocols and data presentation in order to better understand the complex correlations between fatigue behavior and processing parameters.

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Section: Fatigue Of Bj and Fff 316lmentioning

confidence: 79%

Section: Fatigue Of Bj and Fff 316lmentioning

confidence: 89%

Section: Strain-based Approaches and Lcfmentioning

confidence: 99%

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Fatigue Behavior of Additively Manufactured Stainless Steel 316L

Avanzini

2022

Materials

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“…The authors of the present study previously conducted ultrasonic testing on binder jet printed SS316L and SS316+bronze samples and identified spatial variations in grain size and porosity both parallel and perpendicular to the printing direction [7]. Other studies applying XCT or UT to a selection of binder jetted materials are also available [6,7,[31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 90%

Uncovering microstructural heterogeneities in binder jet printed SS316L through ultrasonic testing and X-ray computed tomography

Cook

Huang

Smithson

et al. 2023

Materials Characterization

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“…In recent years, there has been an increased interest in manufacturing 316L stainless steel (SS) parts by BJ3DP, [5,7,[10][11][12][13][14][15] as 316L SS displays appealing properties, that is, outstanding corrosion resistance, [16,17] excellent oxidation resistance, [18,19] and good weldability. [20][21][22] Most of the previous studies are focused almost exclusively on densifying the 316L SS to achieve the desired performance.…”

Section: Introductionmentioning

confidence: 99%

Binder Jet 3D Printing of 316L Stainless Steel: Orthogonal Printing and Sintering Process Optimization

Chen

et al. 2022

Adv Eng Mater

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Binder jet 3D printing (BJ3DP) is an additive manufacturing technique that uses a liquid binder to selectively deposit powder layer by layer to fabricate 3D parts followed by sintering. Herein, the printing parameters, sintering temperature, and holding time of 316L stainless steel (SS) materials produced by BJ3DP technique are systematically investigated. Based on the L9 orthogonal experimental design, the green parts can achieve the highest relative density of ≈55.9%, when the layer thickness, binder saturation, and roller traverse speed are 150 μm, 35%, and 100 mm s−1, respectively. Five green parts printed using the optimal parameters are subsequently sintered under different temperatures and holding time. All the as‐sintered samples consist of a primary γ‐Fe phase and a small amount of δ‐ferrite phase. After sintering at 1435 °C for 7.5 h, the as‐sintered samples obtain the highest relative density of ≈92.1% along with the most excellent mechanical properties, displaying ultimate tensile strength of ≈558 MPa and an elongation of ≈41%. The mechanical properties of these samples sintered at 1435 °C for 7.5 h are also superior to those of the annealed 316L SS in ASTM A276/A276M‐17.

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Effect of binder jetting microstructure variability on low cycle fatigue behavior of 316L

Cited by 17 publications

References 21 publications

Fatigue Behavior of Additively Manufactured Stainless Steel 316L

Fatigue Behavior of Additively Manufactured Stainless Steel 316L

Uncovering microstructural heterogeneities in binder jet printed SS316L through ultrasonic testing and X-ray computed tomography

Binder Jet 3D Printing of 316L Stainless Steel: Orthogonal Printing and Sintering Process Optimization

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