Investigation of the Ultrafine-Grained Structure Formation under Different Strain Rates

Kováčová, Andrea; Kvačkaj, Tibor; Bidulský, Róbert; Bidulská, Jana; Kočiško, Róbert; Lityńska‐Dobrzyńska, Lidia

doi:10.1515/amm-2017-0125

Cited by 2 publications

(2 citation statements)

References 45 publications

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“…The YS/UTS ratio, which controls the local loss of plastic stability due to the internal structure of material (nonhomogeneity, defects, but also due to the processing technology) for example in the deep-drawing process. High value of the ratio results in restricted formability and resistance to fatigue fracture on the other hand [8,9]. As the temperature of the solution treatment rises, the YS/UTS ratio and also Meyer's index n increase.…”

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Indentation Size Effect of Heat Treated Aluminum Alloy

Petrík¹,

Blaško²,

Vasilňáková³

et al. 2019

Acta Metall Slovaca

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<p class="AMStitle">Abstract</p><p class="AMSmaintext">The aim of the submitted work is to study the influence of applied loads ranging from 0.09807 N to 0.9807 N on measured values of micro-hardness of heat treated aluminum alloy 6082. The influence of applied load on a measured value of micro-hardness was evaluated by Meyer’s index n, PSR method and by Analysis of Variance (ANOVA). The influence of the load on the measured value of micro-hardness is statistically significant and the relationship between the applied load and micro-hardness manifests the moderate reverse ISE. As the temperature of the solution treatment rises, the YS/UTS ratio and also Meyer’s index n, measured and “true hardness“ increase. On the other hand, its effect on the plastic properties of the alloy is ambiguous.</p>

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Section: Experimental Materials and Methodsmentioning

confidence: 99%

Indentation Size Effect of Heat Treated Aluminum Alloy

Petrík¹,

Blaško²,

Vasilňáková³

et al. 2019

Acta Metall Slovaca

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“…The application of the severe plastic deformation (SPD) method in metals and metal alloys that have specific microstructural and design features may lead to high mechanical properties [2,3]. It is related to the strong refinement of the microstructure to the ultrafine-grained (UFG) or nanocrystalline (NC) level [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Przybysz,

Kulczyk,

Skiba

et al. 2022

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The methods of severe plastic deformation (SPD) of metals and metal alloys are very attractive due to the possibility of refinement of the grains to nanometric sizes, which facilitates obtaining high mechanical properties. This study investigated the influence of SPD in the process of hydrostatic extrusion (HE) on the anisotropy of the mechanical properties of the CuCrZr copper alloy. The method of HE leads to the formation of a characteristic microstructure in deformed materials, which can determine their potential applications. On the longitudinal sections of the extruded bars, a strong morphological texture is observed, manifested by elongated grains in the direction of extrusion. In the transverse direction, these grains are visible as equiaxed. The anisotropy of properties was mainly determined based on the analysis of the static mini-sample static tensile test and the dynamic impact test. The obtained results were correlated with microstructural observations. In the study, three different degrees of deformation were applied at the level necessary to refine the grain size to the ultrafine-grained level. Regardless of the applied degree of deformation, the effect of the formation of a strong morphological texture was demonstrated, as a result of which there is a clear difference between the mechanical properties depending on the test direction, both by the static and dynamic method. The obtained results allow for the identification of the characteristic structure formed during the HE process and the more effective use of the CuCrZr copper alloy in applications.

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Investigation of the Ultrafine-Grained Structure Formation under Different Strain Rates

Cited by 2 publications

References 45 publications

Indentation Size Effect of Heat Treated Aluminum Alloy

Indentation Size Effect of Heat Treated Aluminum Alloy

Bulletin of the Polish Academy of Sciences: Technical Sciences

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