Fatigue Properties Of Additively Manufactured AlSi10Mg – Surface Treatment Effect

Brandão, Ana D.; Gumpinger, Johannes; Gschweitl, Michael; Seyfert, Christoph; Hofbauer, Peter; Ghidini, T.

doi:10.1016/j.prostr.2017.11.061

Cited by 55 publications

(22 citation statements)

References 15 publications

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“…It should be considered that information about the build platform temperature are not always supplied in the experimental descriptions of published investigations. Examples of 35 • C [8,10,[26][27][28], 100 • C [13], and 200 • C [21] platform processing are available in literature.…”

Section: Methodsmentioning

confidence: 99%

Effects of Platform Pre-Heating and Thermal-Treatment Strategies on Properties of AlSi10Mg Alloy Processed by Selective Laser Melting

Casati

Nasab

Coduri

et al. 2018

Metals

134

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The AlSi10Mg alloy was processed by selective laser melting using both hot- and cold-build platforms. The investigation was aimed at defining suitable platform pre-heating and post-process thermal treatment strategies, taking into consideration the peculiar microstructures generated. Microstructural analyses, differential scanning calorimetry, and high-resolution diffraction from synchrotron radiation, showed that in the cold platform as-built condition, the amount of supersaturated Si was higher than in hot platform samples. The best hardness and tensile performance were achieved upon direct aging from cold platform-printed alloys. The hot platform strategy led to a loss in the aging response, since the long processing times spent at high temperature induced a substantial overaging effect, already in the as-built samples. Finally, the standard T6 temper consisting of post-process solution annealing followed by artificial aging, resulted in higher ductility but lower mechanical strength.

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Section: Methodsmentioning

confidence: 99%

Effects of Platform Pre-Heating and Thermal-Treatment Strategies on Properties of AlSi10Mg Alloy Processed by Selective Laser Melting

Casati

Nasab

Coduri

et al. 2018

Metals

134

View full text Add to dashboard Cite

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“…However, the typical defects in additively manufactured parts are very small and can adopt irregular or planar geometries, or are located in difficult to inspect areas, and are, therefore, more challenging to detect than defects found in cast, wrought or forged parts. Furthermore, the effects of these defects are not yet sufficiently understood, for example, with regard to the effect on the mechanical fatigue behavior of additively manufactured materials and parts [7,8]. Therefore, better quantitative NDE methods are needed to accelerate the adoption of additive manufacturing for primary load-bearing structures and system critical components.…”

Section: Introductionmentioning

confidence: 99%

Laboratory X-ray tomography for metal additive manufacturing: Round robin test

Plessis

Roux

Waller

et al. 2019

Additive Manufacturing

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Zhang et al [26] determined that stress relieve reduces the strengths and fatigue properties of the alloy significantly due to reduced solid solubility and the precipitation of the fine silicon as well as the demolition of the fine sub-structures within the aluminum grains. Li et al [23,27] stated that even though heat treatment is required for quality improvement of a part by microstructural refinement, it has been found to decrease the UTS while increasing the ductility. This is as a result of the silicon trapped in the aluminum matric that precipitates to the grain boundaries, reducing the solid solution strength [12].…”

Section: Tensile Strength After Stress Relievingmentioning

confidence: 99%

The Effect of Stress Relief on the Mechanical and Fatigue Properties of Additively Manufactured AlSi10Mg Parts

Mfusi

Mathe

Tshabalala

et al. 2019

Metals

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The heating and cooling profiles experienced during laser additive manufacturing results in residual stresses build up in the component. Therefore, it is necessary to perform post build stress relieving towards the retention and improvement of the mechanical properties. However the thermal treatments for conventional manufacturing do not seem to completely accommodate these rapid heating and cooling cycles of laser processing techniques such as powder bed fusion. Characterizations such as density measurements on the samples were performed employing the Archimedes principle; hardness testing was performed on the Zwick micro/macro (Hv) hardness tester, SEM and Electron backscatter diffraction (EBSD). Fracture toughness and crack growth was conducted on a fatigue crack machine. All characterization was done after stress relieving of Selective Laser Melting (SLM) produced samples at 300 °C for 2 hrs was performed in a furnace. The mechanical properties appear to be rather compromised instead of being enhanced desirably. As-built SLM produced tensile specimens built in different directions exhibited significantly favorable mechanical properties. However, post stress relieve thermal treatment technique deteriorated the strength while increasing the ductility significantly. Nonetheless, fatigue crack growth and fracture toughness illustrated positive outcome in terms of fatigue life on SLM produced AlSi10Mg components in application.

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Fatigue Properties Of Additively Manufactured AlSi10Mg – Surface Treatment Effect

Cited by 55 publications

References 15 publications

Effects of Platform Pre-Heating and Thermal-Treatment Strategies on Properties of AlSi10Mg Alloy Processed by Selective Laser Melting

Effects of Platform Pre-Heating and Thermal-Treatment Strategies on Properties of AlSi10Mg Alloy Processed by Selective Laser Melting

Laboratory X-ray tomography for metal additive manufacturing: Round robin test

The Effect of Stress Relief on the Mechanical and Fatigue Properties of Additively Manufactured AlSi10Mg Parts

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