Influence of Asymmetric Rolling Process on the Microstructure Properties of Bimetallic Sheet Metals

Stradomski, G.; Rydz, Dariusz; Garstka, T.; Pałęga, Michał; Dyl, T.; Szarek, A.; Łukomska-Szarek, Justyna; Dembiczak, Tomasz

doi:10.3390/ma15062013

Cited by 4 publications

(5 citation statements)

References 29 publications

(61 reference statements)

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“…Nevertheless, a possible explanation is the non-uniform deformation of the rolled samples. Plastic deformation in a whole volume of the material at room temperature is easier to achieve, resulting in strain hardening affecting the entire cross-section [ 42 , 43 ], as reflected in the microhardness distribution in the C1.2 sample ( Figure 4 ). The situation where each layer of AA2519-T62 during cryorolling achieves different strain hardening may be considered a potential technological problem and requires further development of this technology.…”

Section: Resultsmentioning

confidence: 99%

Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions

et al. 2022

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The aim of this investigation was to identify the effect of rolling at room temperature and under cryogenic conditions on selected properties and the microstructure of the AA2519-T62 aluminum alloy. The rolling processes were conducted with different variants of asymmetry (1.0—symmetry rolling; 1.2, 1.4 and 1.6). The investigation of the obtained samples involves microhardness distribution, microstrains, and microstructure observations using light and transmission electron microscopes. Both rolling at room temperature and under cryogenic conditions increased the micro-hardness of AA2519-T62 by at least 10%. The highest reported increase (25%) was obtained for the sample rolled at room temperature in the symmetry rolling process. The samples rolled under cryogenic conditions are characterized by a lower increase in microhardness than samples rolled at room temperature and by significantly lower values of microstrains. The application of rolling with the asymmetry ratio remaining within the range of 1.2–16 only slightly affected the microhardness values of the samples rolled at room temperature and under cryogenic conditions with respect to conventional symmetrical rolling.

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Section: Resultsmentioning

confidence: 99%

Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions

et al. 2022

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“…Thus, increasing the application of advanced high-strength steels (AHSSs) with a good combination of strength and formability is crucial. Among various AHSSs, medium Mn steel with Mn addition between 3 and 10 wt.% is considered ideal to meet the requirements mentioned above [1][2][3][4][5][6][7]. The medium-Mn steel concept was first proposed by Miller [8] due to the considerable mechanical property of 6Mn steel.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship

Liu

Lin

et al. 2023

Crystals

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In the current work, we design a novel medium Mn steel with a superior mechanical property and no Lüders band. For industrial applications, a “low Mn addition” chemical composition and two kinds of different annealing processes with various initial microstructures were introduced. Consequently, the sample subjected to full austenitized quenching plus intercritical annealing process exhibited an outstanding mechanical property without the Lüders band. The microstructural evolution and austenite reverted transformation behavior were discussed in detail. In addition, austenite stability was estimated by chemistry stability and mechanical stabilization. It seemed that the austenite stability was significantly influenced by the morphological component. Thus, the sample with single lath-like ferrite and austenite exhibited the most excellent mechanical property. Furthermore, the “Lüders band” phenomenon was considered to rely on the restriction of martensitic recovery and recrystallization by lath-like morphology. The occurrence of the Lüders band was attributed to the low work-hardening ability caused by dynamic recovery. The formation of lath-like morphology could prevent the occurrence and propagation of the Lüders band by increasing the dislocation density and active TRIP effect.

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“…RB changes the shape of plastically processed materials as a result of the impact of external forces. The geometrical dimensions of the rolled sheet, internal microstructure and mechanical properties change as a result of the RB process (Stradomski et al, 2022;Walnik et al, 2021). Accumulative roll bonding is a technique used to produce laminates because the rolling pressure can create a mechanical bond between metals, such as Al/Cu (Vini et al, 2017), Al/Zn (Dehsorkhi et al, 2011), Al/Fe (Tang et al, 2015), and Al/Ni (Mozafarri et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Increasing the uniformity of the deformation of bimetallic sheets is obtained by using the asymmetry of the circumferential speed of the working rollers (Sun et al, 2020;Yu et al, 2013). Sometimes dynamic recrystallisation of the workpiece subjected to the rolling process may be eliminated (Stradomski et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Aluminium/Copper Bimetallic Sheets Subjected to Cyclic Bending

Żaba

Puchlerska

Rusz

et al. 2023

AMME

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The aim of this study is to evaluate the influence of the roll bonding (RB) process on the mechanical properties of Al/Cu bimetallic strip specimens. A specially designed test instrument for the cyclic bending test of strip specimens produced by RB has been proposed. The test consists of repeated pulling of a strip of sheet metal through a system of cylindrical countersamples. Samples cut along and across the sheet rolling direction were tested. The specimens were subjected to preliminary microstructural tests using an optical microscope with Nomarski contrast and scanning electron microscopy. The tests showed a slight influence of the orientation of the samples on changes to the mechanical properties of the bimetallic sheets in the cyclic bending process. For samples oriented along the sheet rolling direction, discontinuities in the transition layer were found. The samples oriented perpendicularly to the rolling direction were free of this defect.

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Influence of Asymmetric Rolling Process on the Microstructure Properties of Bimetallic Sheet Metals

Cited by 4 publications

References 29 publications

Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions

Study on Symmetry and Asymmetry Rolling of AA2519-T62 Alloy at Room-Temperature and Cryogenic Conditions

A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship

Mechanical Properties of Aluminium/Copper Bimetallic Sheets Subjected to Cyclic Bending

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