Structure and Properties of Az31 Magnesium Alloy After Combination of Hot Extrusion and Ecap

Hilšer, Ondřej; Rusz, Stanislav; Maziarz, W.; Tański, Tomasz; Snopiński, Przemysław; Džugan, Ján

doi:10.12776/ams.v23i3.971

Cited by 10 publications

(5 citation statements)

References 22 publications

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“…ECAP influences the morphological characteristics f shape and f circle . This is mainly due to the fact that pores extend primarily in one direction, due to the stress–strain situation during the Severe Plastic Deformation [39,40,41]. Pores became nano sized and more closed and isolated.…”

Section: Resultsmentioning

confidence: 99%

Different Formation Routes of Pore Structure in Aluminum Powder Metallurgy Alloy

Bidulská

Bidulský²,

Grande

et al. 2019

Materials

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In powder metallurgy (PM), severe plastic deformation (SPD) is a well-known technological solution to achieve interesting properties. However, the occurrence of pores in the final product may limit these properties. Also, for a given type of microstructure, the stereometric parameters of the pore structures, such as shape (represented by Aspect and Dcircle) and distribution (fshape, and fcircle), decisively affect the final properties. The influence of different processing routes (pressing, sintering and equal channel angular pressing (ECAP)) on pore structures in an aluminum PM alloy is discussed. The nature of porosity, porosity evolution and its behavior is explored. The correlation between pore size and morphology is also considered. The final pore structure parameters (Aspect, Dcircle, fshape, and fcircle) of studied aluminum alloys produced by different processing routes depends on the different formation routes.

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Section: Resultsmentioning

confidence: 99%

Different Formation Routes of Pore Structure in Aluminum Powder Metallurgy Alloy

Bidulská

Bidulský²,

Grande

et al. 2019

Materials

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“…SPD provides significant grain size refinement below 1 µm; thereby, forming the ultrafinegrained structure (UFG). SPD methods such as equal channel angular pressing (ECAP) [1][2][3][4], high-pressure torsion (HPT) [5] and their modifications are very popular nowadays. The main disadvantage of this is producing relatively small samples.…”

Section: Introductionmentioning

confidence: 99%

The mechanical properties of OFHC copper and CuCrZr alloys after asymmetric rolling at ambient and cryogenic temperatures

et al. 2018

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This work deals with comparing the mechanical properties of OFHC copper and CuCrZr alloys processed by asymmetric ambient rolling (ASaR) and asymmetric cryorolling (AScR). The conditions for asymmetrical rolling were ensured by different diameters of the main rolls. The thickness of samples was reduced about 20% - 70% at ambient temperature and at a temperature of liquid nitrogen. Mechanical properties such as yield strength, tensile strength, reduction of area and microhardness were determined for all rolled samples. Rolling at cryogenic temperatures provide about 50-60MPa more tensile strength for Cu and 60-80 MPa for CuCrZr alloys when rolling at ambient temperature. After AScR of CuCrZr alloys, a start of precipitation was shifted at the temperature of 434∘C and recrystallization was a part of the precipitation peak. According to the results, plastic deformation through shear bands is the dominant mechanism in materials with lower stacking fault energy (CuCrZr) treated under cryogenic conditions.

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“…The presented pictures for verification of structure are used. A detailed description of the structural features listed above see in before author's works cited in references [2,[7][8][9][10].…”

Section: Light Metallographymentioning

confidence: 99%

The Influence of Severe Plastic Deformation Process on Structure and Properties of AZ 31 Alloy after Selected Heat Treatment

Rusz

Hilšer

Tylšar

et al. 2018

SSP

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The technology of structure refinement in materials with the aim of achieving substantial mechanical properties and maintaining the required plasticity level is becoming increasingly useful in industrial practice. Magnesium alloys are very progressive materials for utilization in practice thanks to their high strength-to-weight ratios (tensile strength/density). The presented paper analyses the effect of the input heat treatment of the AZ31 alloy on the change of structure and strength properties through the process of severe plastic deformation (SPD), which finds an increasing utilization, especially in the automotive and aviation industry. For the study of the influence of the SPD process (ECAP method) on the properties of the AZ31 alloy, two types of thermal treatment of the initial state of the structure were selected. The analysis of the structure of the AZ31 alloy was performed in the initial state without heat treatment and subsequently after heat treatment. In the next part, the influence of the number of passes on the strengthening curves was evaluated. Mechanical properties of the AZ31 alloy after ECAP were evaluated by hardness measurement and completed by structure analysis.

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Structure and Properties of Az31 Magnesium Alloy After Combination of Hot Extrusion and Ecap

Cited by 10 publications

References 22 publications

Different Formation Routes of Pore Structure in Aluminum Powder Metallurgy Alloy

Different Formation Routes of Pore Structure in Aluminum Powder Metallurgy Alloy

The mechanical properties of OFHC copper and CuCrZr alloys after asymmetric rolling at ambient and cryogenic temperatures

The Influence of Severe Plastic Deformation Process on Structure and Properties of AZ 31 Alloy after Selected Heat Treatment

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