Daniel Melzer
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View article: Influence of Zinc Chloride Exposure on Microstructure and Mechanical Behavior of Age-Hardened AZ91 Magnesium Alloy
Influence of Zinc Chloride Exposure on Microstructure and Mechanical Behavior of Age-Hardened AZ91 Magnesium Alloy Open
The AZ91 magnesium alloy was subjected to a complex treatment involving age hardening (supersaturation and artificial aging) and simultaneous surface layer modification. The specimens were supersaturated in contact with a mixture containin…
View article: Phase-field ductile fracture analysis of multi-materials and functionally graded composites through numerical and experimental methods
Phase-field ductile fracture analysis of multi-materials and functionally graded composites through numerical and experimental methods Open
Despite extensive studies on material models for fracture applicable to homogenous materials, the demand for advanced numerical methods to predict the failure in multi-materials and functionally graded materials (FGMs) remains substantial.…
View article: Effect of Double-Step and Strain-Assisted Tempering on Properties of Medium-Carbon Steel
Effect of Double-Step and Strain-Assisted Tempering on Properties of Medium-Carbon Steel Open
The present work aimed to study the properties of medium-carbon steel during tempering treatment and to present the strength increase of medium-carbon spring steels by strain-assisted tempering (SAT). The effect of double-step tempering an…
View article: Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded γ titanium aluminides
Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded γ titanium aluminides Open
The design freedom in Laser Metal Deposition provided by the absence of a powder bed enables the fabrication of Functionally Graded Materials through Additive Manufacturing. For the first time, two suitable γ-TiAl alloys (TiAl48Cr2Nb2, TiA…
View article: Bulk-like ductility of cold spray additively manufactured copper in the as-sprayed state
Bulk-like ductility of cold spray additively manufactured copper in the as-sprayed state Open
In recent years, cold spray process is increasingly used for additive manufacturing of metallic components, referred to as cold spray additive manufacturing (CSAM). Unlike the fusion-based AM processes, CSAM is achieved in a solid-state, b…
View article: Prediction of Behaviour of Thin-Walled DED-Processed Structure: Experimental-Numerical Approach
Prediction of Behaviour of Thin-Walled DED-Processed Structure: Experimental-Numerical Approach Open
Additive manufacturing (AM) becomes a more and more standard process in different fields of industry. There is still only limited knowledge of the relationship between measured material data and the overall behaviour of directed energy dep…
View article: Effect of heat treatment on mechanical properties of duplex steel SAF 2507 manufactured by DED
Effect of heat treatment on mechanical properties of duplex steel SAF 2507 manufactured by DED Open
This work is focused on the influence of heat treatment on the mechanical properties of duplex steel SAF 2507 produced by direct laser deposition (DLD). Duplex steels combine the advantages of ferritic and austenitic steels and reach excel…
Tensile properties evaluation of additively manufactured AISI 316L thin wall and bulk material using various miniaturized specimen geometries Open
Additive Manufacturing is an innovative technology, which allows creating structures of complex and unique geometries layer by layer. The mechanical properties of deposited objects can vary depending on their length, thickness and depositi…
Improved methodology for validation of the FEA model USING TESTING COMPONENTS Open
In most cases, the components (U-profiles, Ω-profiles, box-beams) are used to validate the material model generated from the measurement of individual sheet metal parameters.The validation process consists of comparing the resultant force …
Fracture Toughness Analysis of Automotive-Grade Dual-Phase Steel Using Essential Work of Fracture (EWF) Method Open
Fracture toughness determination of dual-phase DP450 steel using the essential work of fracture (EWF) methodology is the major focus of this research work. The EWF method is used for the determination of fracture toughness of thin sheets i…
Effect of revolutions number on mechanical properties of HPT processed copper Open
This paper studies the effect of high-pressure torsion (HPT) method at ambient temperature on mechanical properties of material. The aim is to compare copper subjected to HPT for 2, 10 and 30-revolutions with coarse grain structured copper…
Optimization of test specimen dimensions for thermal power station exposure device Open
Degradation of metallic materials can decrease mechanical properties of metal constructions and components in thermal power plants during their operation and consequently lead to loss of safety and reliability. It is difficult to remove ma…
Compatibility of fracture toughness results in the upper shelf region Open
Fracture toughness has been used for decades nowadays for structure integrity assessment and it is important mechanical characteristic for new materials as well. In the upper shelf region, where stable fracture behavior is observed, concep…