Microstructure and Texture Evolution with Relation to Mechanical Properties of Compared Symmetrically and Asymmetrically Cold Rolled Aluminum Alloy

Kraner, Jakob; Fajfar, Peter; Palkowski, Heinz; Kugler, G.; Godec, Matjaž; Paulin, Irena

doi:10.3390/met10020156

Cited by 16 publications

(8 citation statements)

References 35 publications

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“…Figure 10a-c show the distribution of textures in the grain structure of the sample annealed at 150 • C, 350 • C and 400 • C after thermal cycling, respectively. Grains with <100> orientation were formed by attaching to the original recrystallized grains, growing along the boundary of the elongated grains [52][53][54]. A clear dividing boundary was formed between equiaxed grains and deformed grains.…”

Section: Ebsd Analysis Of Microstructure After Thermal Cyclingmentioning

confidence: 99%

Effect of Microstructure on the Dimensional Stability of Extruded Pure Aluminum

Zhou

et al. 2021

Materials

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High-performance extruded aluminum alloys with complex textures suffer significant dimension variation under environmental temperature fluctuations, dramatically decreasing the precision of navigation systems. This research mainly focuses on the effect of the texture of extruded pure aluminum on its dimensional stability after various annealing processes. The result reveals that a significant increment in the area fraction of recrystallized grains with <100> orientation and a decrement in the area fraction of grains with <111> orientation were found with increasing annealing temperature. Moreover, with the annealing temperature increasing from 150 °C to 400 °C, the residual plastic strain after twelve thermal cycles with a temperature range of 120 °C was changed from −1.6 × 10−5 to −4.5 × 10−5. The large amount of equiaxed grains with <100> orientation was formed in the microstructure of the extruded pure aluminum and the average grain size was decreased during thermal cycling. The area fraction of grain with <100> crystallographic orientation of the sample annealed at 400 °C after thermal cycling was 30.9% higher than annealed at 350 °C (23.7%) or at 150 °C (18.7%). It is attributed to the increase in the proportion of recrystallization grains with <100> direction as the annealing temperature increases, provided more nucleation sites for the formation of fine equiaxed grains with <100> orientation. The main orientation of the texture was rotated from parallel to <111> to parallel to <100> after thermal cycling. The change in the orientation of grains contributed to a change in interplanar spacing, which explains the change in the dimension along the extrusion direction during thermal cycling.

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Section: Ebsd Analysis Of Microstructure After Thermal Cyclingmentioning

confidence: 99%

Effect of Microstructure on the Dimensional Stability of Extruded Pure Aluminum

Zhou

et al. 2021

Materials

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“…A chemical composition of DC04 steel sheet is listed in Table 1. Due to their specifically designed surface structure and excellent formability, DC04 cold rolled steel sheets are well-suited to the fabrication of complex, formed body parts like floor panels, spare wheel wells and auto bodies [20]. The mechanical properties of the sheets tested were determined according to the EN ISO 6892-1:2016.The selected mechanical parameters are listed in the Table 2.…”

Section: Methodsmentioning

confidence: 99%

Experimental Analysis of Single Point Incremental Forming of Truncated Cones in DC04 Steel Sheet

Krasowski

Kubit

Trzepieciński

et al. 2020

Advances in Materials Science

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Experimental tests to form truncated cones were carried out on a 3-axis milling machine. 0.8-mm thick low-alloy DC04 steel sheets were used as test material. The profile tool-path trajectory was generated using the EDGECAM software. The slope angle and diameter of the base of the conical shaped drawpieces were 70°-72° and 65 mm, respectively. The drawpiece heights were up to 75 mm. The full synthetic lubricant 75W85 was used to reduce the frictional resistance. The effect of selected incremental forming parameters on the formability of the DC04 sheet and the susceptibility to crack formation have been analysed and discussed. It was found that the surface roughness of the workpiece is strongly influenced by step depth. By controlling the feed rate, it is possible to prevent failure of the material.

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“…Shore et al [58] indicate, using FEM simulations, the set of conditions that would result in texture homogenization during ASR, confirming that increasing difference in roll radii (or velocity ratio), increasing friction and increasing reduction per pass contribute to "decrease texture heterogeneity and increase the penetration of shear strain through the sheet thickness". Even when the mentioned texture components are not attained, using ASR can lead to texture softening (increase in fraction of random orientations), and to a decrease in measured ∆r values [59].…”

Section: Texture Of Aluminium Alloysmentioning

confidence: 99%

“…This unusual behavior was associated with the differences of the microstructure formed during ASR and CR and the way in which the free solutes and the clusters contribute to the material strengthening. Kraner et al [59] performed ASR on an AA5454 alloy with roll speed ratio of 1.0 (CR), 1.5 and 2.0, and two levels of reductions-33% and 44% in a single pass. Mechanical properties were evaluated by tensile tests.…”

Section: Aluminum Alloysmentioning

confidence: 99%

Asymmetrical Rolling of Aluminum Alloys and Steels: A Review

Vincze

Simões

Butuc

2020

Metals

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Asymmetric rolling is an attractive metal forming process due to its simplicity, low cost and capability to produce unique characteristics in materials. The asymmetry promoted by the process leads to a formation of a large collection of texture components and a refined structure which is capable to improve the mechanical behavior of metallic materials. The aim of this work is to present a perspective of the process and to construct the bases for future development and application of this technique. Thus, several aspects are addressed such as process methods (i.e., dissimilarity of the rolls diameters, rolls angular speed or friction conditions), the process parameters (i.e., total thickness reduction, thickness reduction per pass, peripheral speed ratio, rolling routes) and their effect on material properties, including texture and microstructure evolution, and mechanical properties. This review is focused on the experimental description of asymmetric rolling applied to aluminum alloys and steels. Although the asymmetric rolling application was mostly at a laboratory scale, there is a good perspective for its implementation in the industry. The pros and cons based on the up to date literature and authors’ experience are presented and discussed.

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Microstructure and Texture Evolution with Relation to Mechanical Properties of Compared Symmetrically and Asymmetrically Cold Rolled Aluminum Alloy

Cited by 16 publications

References 35 publications

Effect of Microstructure on the Dimensional Stability of Extruded Pure Aluminum

Effect of Microstructure on the Dimensional Stability of Extruded Pure Aluminum

Experimental Analysis of Single Point Incremental Forming of Truncated Cones in DC04 Steel Sheet

Asymmetrical Rolling of Aluminum Alloys and Steels: A Review

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