Small Punch Testing to Estimate the Tensile and Fracture Properties of Additively Manufactured Ti-6Al-4V

Lucon, Enrico; Benzing, Jake T.; Derimow, Nicholas; Hrabe, Nik

doi:10.1007/s11665-021-05603-9

Cited by 19 publications

(2 citation statements)

References 34 publications

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“…The loading direction has a significant impact on the results, particularly in non-isotropic materials such as EBM alloys. Therefore, it is likely that the lack of correlation between the two methods is due to the differences in the loading direction [ 74 ]. The P max values of all hydrogenated alloys decreased significantly, though the as-built hydrogenated alloy showed smaller degradation than either the HIP or HT alloy (a decrease of ~46%, ~65%, and ~64%, respectively).…”

Section: Resultsmentioning

confidence: 99%

The Effects of Hot Isostatic Pressing (HIP) and Heat Treatment on the Microstructure and Mechanical Behavior of Electron Beam-Melted (EBM) Ti–6Al–4V Alloy and Its Susceptibility to Hydrogen

Lulu-Bitton,

Navi,

Haroush

et al. 2024

Materials

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The effects of the secondary processes of Hot Isostatic Pressing (HIP) at 920 °C and Heat Treatment (HT) at 1000 °C of Electron Beam-Melted (EBM) Ti–6Al–4V alloy on the microstructure and hydrogen embrittlement (HE) after electrochemical hydrogen charging (EC) were investigated. Comprehensive characterization, including microstructural analysis, X-ray diffraction (XRD), thermal desorption analysis, and mechanical testing, was conducted. After HIP, the β-phase morphology changed from discontinuous Widmanstätten to a more continuous structure, 10 times and ~1.5 times larger in length and width, respectively. Following HT, the β-phase morphology changed to a continuous “web-like” structure, ~4.5 times larger in width. Despite similar mechanical behavior in their non-hydrogenated state, the post-treated alloys exhibit increased susceptibility to HE due to enhanced hydrogen penetration into the bulk. It is shown that hydrogen content in the samples’ bulk is inversely dependent on surface hydride content. It is therefore concluded that the formed hydride surface layer is crucial for inhibiting further hydrogen penetration and adsorption into the bulk and thus for reducing HE susceptibility. The lack of a hydride surface layer in the samples subject to HIP and HT highlights the importance of choosing secondary treatment process parameters that will not increase the continuous β-phase morphology of EBM Ti–6Al–4V alloys in applications that involve electrochemical hydrogen environments.

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Section: Resultsmentioning

confidence: 99%

The Effects of Hot Isostatic Pressing (HIP) and Heat Treatment on the Microstructure and Mechanical Behavior of Electron Beam-Melted (EBM) Ti–6Al–4V Alloy and Its Susceptibility to Hydrogen

Lulu-Bitton,

Navi,

Haroush

et al. 2024

Materials

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“…Regarding material conditioning and processing, the SPT has been reportedly used for studying the effects of neutron-ion irradiation [14], exposure to hydrogen embrittlement [15], thermal ageing [16,17], annealing [18], hot isostatic pressing [19], and thermal cutting [20]. These thermal ageing, annealing, hot isostatic pressing, and thermal cutting studies are related to the field of heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Small Punch Test on Jominy Bars for High-Throughput Characterization of Quenched and Tempered Steel

Miguel,

Berriozabalgoitia,

Artola

et al. 2023

Metals

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Studying the effect of quench and tempering heat treatments on steel, more specifically screening the effect of the austenitizing, quenching, and tempering conditions on mechanical properties, can be extremely material- and time-consuming when standard tensile testing specimens are employed. Jominy bar end quench testing has been used as a standard method to reduce the resources that are required for this type of screening. Jominy bar testing by itself shows, though, the limitation of yielding only hardness and microstructure as a result. In the last few years, the small punch test (SPT) standard has been developed. This technique can obtain an estimation of tensile mechanical properties with miniaturized specimens, which can be dissected from Jominy bars. The paper proposes a new testing methodology for screening the outcome of heat treatment conditions by combining the Jominy bar testing and SPT. Quench and tempering of API 5L X65Q pipe steel is used as a case study to describe the proposed methodology. The ability of the Jominy with SPT to detect variations in the mechanical properties produced by heat treatments is shown. This methodology can be directly applied as a high-throughput testing approach in the optimization of heat treatments.

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Digital Multiphase Composites via Additive Manufacturing

Smith,

MacCurdy

2024

Advanced Materials

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Mechanical properties of traditional engineering materials are typically coupled to each other, presenting a challenge to practitioners with multi‐dimensional material property requirements. In this work we demonstrate continuous, independent control over multiple mechanical properties in composite materials realized using additive manufacturing. For the first time, we experimentally characterize composites additively manufactured from rigid plastic, soft elastomer, and liquid constituents, demonstrating materials which span four orders of magnitude in modulus and two orders of magnitude in toughness. By forming analytical mappings between relative concentrations of constituents at the microscale and resulting macroscale material properties, we enable inverse material design; we showcase the method by printing artifacts with prescribed toughness and elasticity distributions. We place the properties of these composites in the context of biological tissues, showing they have promise as mechanically plausible tissue mimics.This article is protected by copyright. All rights reserved

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Small Punch Testing to Estimate the Tensile and Fracture Properties of Additively Manufactured Ti-6Al-4V

Cited by 19 publications

References 34 publications

The Effects of Hot Isostatic Pressing (HIP) and Heat Treatment on the Microstructure and Mechanical Behavior of Electron Beam-Melted (EBM) Ti–6Al–4V Alloy and Its Susceptibility to Hydrogen

The Effects of Hot Isostatic Pressing (HIP) and Heat Treatment on the Microstructure and Mechanical Behavior of Electron Beam-Melted (EBM) Ti–6Al–4V Alloy and Its Susceptibility to Hydrogen

Small Punch Test on Jominy Bars for High-Throughput Characterization of Quenched and Tempered Steel

Digital Multiphase Composites via Additive Manufacturing

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