Effects of thickness and orientation on the small scale fracture behaviour of additively manufactured Ti-6Al-4V

Džugan, Ján; Seifi, Mohsen; Procházka, Radek; Rund, Martin; Podaný, Pavel; Konopík, Pavel; Lewandowski, John J.

doi:10.1016/j.matchar.2018.04.003

Cited by 93 publications

(68 citation statements)

References 20 publications

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“…However, as these standards do not consider the testing of miniature bodies, the procedure with the internal regulation has been developed and accredited. Micro -tensile testing has proved to be effective in earlier studies [Dzugan 2017], [Dzugan 2018] and [Rund 2015 andPodany 2014] and the values of mechanical properties are fully comparable with the results of standard tensile tests. The tests were performed on a special LabControl test facility with a capacity of 5kN, accurate measurement of the deformation is provided by the Digital Image Correlation system (DIC).…”

Section: Mechanical Testingmentioning

confidence: 56%

“…In many cases, it is not possible to determine properties with standard sized specimens as the component is smaller than the size of standard specimens. Mini-specimen methods were developed especially for residual service life assessment [Dzugan 2017], [Dzugan 2018]. Micro -tensile testing procedure (M-TT) was developed in COMTES FHT based on the demand to measure reliably the material characteristics by the tensile tests from the minimum amount of the experimental material.…”

Section: Mechanical Testingmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of the Powder Bed Fused Materials From Different Powder Manufacturers

Koukolíková¹,

Podaný²,

Mertová³

2019

MM SJ

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Additive manufacturing (AM) has enabled not only designers over the last few years to boost a huge boom in the design and optimization of machine components. Part of the additive manufacturing is not only the design of the component itself, but the individual steps involved in the creation of computer documentation necessary for the preparation of the AM, the selection of suitable material and the printing itself with possible subsequent heat treatment. Process parameters, including the choice of powder, have a significant effect on the resulting component properties. The powder is one of the process features that play a significant role. The main aim of the research is to compare the properties of materials made from different powders manufacturers. A micro-tensile tests (M-TT), reinforced by metallographic and fractographic analysis, were used to analyse the materials, allowing a detailed discussion of the resulting material properties.

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Section: Mechanical Testingmentioning

confidence: 56%

Section: Mechanical Testingmentioning

confidence: 99%

Comparison of the Powder Bed Fused Materials From Different Powder Manufacturers

Koukolíková¹,

Podaný²,

Mertová³

2019

MM SJ

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“…One explanation could be the great difference in volumes mechanically characterized by tensile and indentation tests. A recent study on Ti64 alloys obtained by PBF-SLM process shows that the work-hardening law obtained from a tensile test depends on the volume of the sample [51] . The authors explain that this influence is due to the difference in surface/volume ratios, thermal history and the number of defects in the samples.…”

Section: Comparison Of the Work-hardening Law Depending On The Characmentioning

confidence: 99%

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

Schneider-Maunoury

Albayda

Bartier

et al. 2020

Materials Today Communications

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The mechanical properties of a Ti-xNb functionally graded material (FGM) created by using an additive manufacturing process (CLAD®) were obtained using a spherical instrumented indentation test (IIT). The aim of this paper is to demonstrate the great suitability of the indentation test coupled with FGM for not only obtaining the hardness of a material, but also obtaining other mechanical properties such as Young's modulus, yield stress and the work-hardening exponent for heterogeneous materials. In the first step, results obtained from the instrumented indentation test were compared with those obtained from the tensile test for the same materials. These results show that these two tests highlight a similar evolution in the mechanical properties. In the second step, and after validating the efficiency of the IIT in obtaining mechanical properties, the FGM Ti-xNb was successfully identified using only IIT. This paper demonstrates that the different mechanical properties of all the compositions of a phase diagram can be measured very easily and quickly while minimizing the number of samples.

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“…Tensile test method using miniaturized tensile specimens was developed in COMTES FHT [Dzugan 2017 The basis of the test comes from the ISO 6892-1 standard at ambient temperature. However, as these standards do not consider the testing of miniature bodies, the procedure with the internal regulation has been developed and accredited.…”

Section: Ms1-abmentioning

confidence: 99%

“…Mechanical properties of these components are usually tested on fabricated samples, because samples cannot be usually extracted from fabricated component by AM technology, for their prescribed size for testing. Solution may be using of sub-size samples for mechanical testing (M-TT micro-tensile tests) extracted from any part of the component [Dzugan 2017], [Dzugan 2018]. The samples used for the experiment were fabricated by laser powder bed fusion.…”

Section: Introductionmentioning

confidence: 99%

Methods of Testing the Mechanical Properties of Additively Manufactured Components

Hrbáčková¹,

Simson²,

Koch³

et al. 2019

MM SJ

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One of the main advantages of additive manufacturing is the possibility of custom-made machine parts. Additive manufacturing enables the production of components with fine details that would be difficult to manufacture with conventional production. This, however, brings some difficulty in the case of the acquisition of conventional test specimens that might exceed the size of the product. Mechanical properties of the tested materials via standard and microtensile test specimens were analysed. The materials AlSi10Mg and MS1 in as-built (AB) and heat treated (HT) conditions were produced by laser powder bed fusion. The aim of the research is to observe the influence of parameters (sample size, direction of testing) on the resulting mechanical properties. Mechanical testing is supported by metallographic and fractographic analysis.

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Effects of thickness and orientation on the small scale fracture behaviour of additively manufactured Ti-6Al-4V

Cited by 93 publications

References 20 publications

Comparison of the Powder Bed Fused Materials From Different Powder Manufacturers

Comparison of the Powder Bed Fused Materials From Different Powder Manufacturers

On the use of instrumented indentation to characterize the mechanical properties of functionally graded binary alloys manufactured by additive manufacturing

Methods of Testing the Mechanical Properties of Additively Manufactured Components

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