Pore closure in thick aluminum plate: From industrial hot rolling to individual pore observation

Gravier, Pauline; Mas, Fanny; Barthelemy, A.; Boller, Élodie; Salvo, Luc; Lhuissier, Pierre

doi:10.1016/j.jmatprotec.2022.117509

Cited by 9 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Those results for the HRBs enable the planning of suitable technology for cold rolling. The desired mechanical and metallographic properties of foil were possible only with the assistance of HRB's properties and changes caused during hot rolling adjustments [22]. Through a further combination of mechanical properties and surface characteristics, the entire surface analysis can be performed via fracture surface parameters to identify differences caused during hot rolling [23].…”

Section: Discussionmentioning

confidence: 99%

Effects of Variated Final Temperature and Workpiece Thickness for Hot Rolling of Aluminum Alloy EN AW-8011

Kraner

Cvahte

Šuštarič

et al. 2023

Metals

View full text Add to dashboard Cite

Hot rolling in the process chain of aluminum-rolled products presents the critical element of material quality and influences productivity. To increase the letter demand modifications of hot rolling, the consequential changes of microstructure, crystallographic texture, and mechanical and formability properties must be acknowledged and consistently considered when planning the rolling process and rolled product. Achieving lower thicknesses of the hot-rolled band would enable fewer passes with cold rolling; consequently, hot rolling with the same number of passes can be completed with lower temperatures. Microstructural and texture characterizations conducted using the light microscope and scanning electron microscope, respectively, of the 3.25 mm hot-rolled band revealed that the smaller grains appeared in the center of the cross-section, unlike for the 6 mm hot-rolled band, where smaller grains were detected on the top and bottom positions of the cross-section. Furthermore, the comparison also shows that the 6 mm hot-rolled band had 64% of random texture components and 83% of recrystallized grains, whereas the proportional adjustment for the 3.25 mm hot-rolled band had 42% of random texture components and 55% of recrystallized grains. For the mechanical testing results, the elongation values in rolling and transverse directions significantly differ only in the case of a hot-rolled band of 3.25 mm. Consequently, the earing results are more than 1.5% higher for the 3.25 mm hot-rolled band, than the 6 mm hot-rolled band.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of Variated Final Temperature and Workpiece Thickness for Hot Rolling of Aluminum Alloy EN AW-8011

Kraner

Cvahte

Šuštarič

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

“…Gravier et al [31] studied the effect of rolling parameters on the evolution of pore volume on aluminum samples processed by hot rolling, since the pore volume affects the properties of the final product. For this purpose, the authors proposed to use in situ mechanical tests, characterized by X-ray microtomography, to obtain experimental data on the actual pore volume evolution under a representative hot rolling deformation.…”

Section: Flat Rollingmentioning

confidence: 99%

Numerical Simulation as a Tool for the Study, Development, and Optimization of Rolling Processes: A Review

Ojeda-López,

Botana-Galvín,

González-Rovira

et al. 2024

Metals

View full text Add to dashboard Cite

Rolling is one of the most important processes in the metallurgical industry due to its versatility. Despite its inherent advantages, design and manufacturing by rolling still rely on trial-and-error-based optimizations, which reduces its efficiency. To minimize the cost and time spent on the development of new rolling schedules, various analytical and numerical methods have been used in recent years. Among other alternatives, simulations based on the finite element method (FEM) are the most widely used. This allows for the analysis of the feasibility of new rolling schedules considering metal alloys with different characteristics, process conditions, or the creation of new operations, as well as the optimization of existing ones. This paper presents a literature review including the latest developments in the field of numerical simulation of rolling processes, which have been classified according to the type of rolling into the following categories: flat rolling, shape rolling, ring rolling, cross-wedge rolling, skew rolling, and tube piercing.

show abstract

“…Through this characterization, they demonstrated that most micro-porosities in structural steels can be characterized as polyhedra. Gravier et al [8,9] classified the shapes of voids within aluminium materials captured through microtomography and proposed a model to predict void closure behaviour during hot rolling processes.…”

Section: Introductionmentioning

confidence: 99%

A Geometry-Dependent Void Closure Model Considering Void Deformation and Orientation Changes during Hot Metal Formation

Kim

Park

Kim

et al. 2023

JMMP

View full text Add to dashboard Cite

In this paper, a void closure model applicable to the general hot forming process has been proposed. Through the representative volume element (RVE) method, the influences of void shape, orientation, and stress state on void closure tendency were analysed. The void closure model was established so that it could consider these cross effects. The model calculates the changing void radius and orientation during deformation by considering the rate of change of the parameters affecting void deformation with respect to the effective strain. The model predicted the void closure tendency well on the RVE scale and predicted the void closure adequately in a multi-stage process with random voids. The results were compared with the stress-triaxiality-based (STB) model, which showed that the void closure model proposed in this study is applicable in general situations. A cogging process was analysed, and the degree of void closure at the end of each pass was compared with the calculated results of the void closure model. For the experimental verification of the proposed model, spherical and ellipsoid voids were placed in a rectangular specimen, and the radii of the voids after compression were measured. The measurement results were compared with the calculation results of the proposed model.

show abstract

Pore closure in thick aluminum plate: From industrial hot rolling to individual pore observation

Cited by 9 publications

References 29 publications

Effects of Variated Final Temperature and Workpiece Thickness for Hot Rolling of Aluminum Alloy EN AW-8011

Effects of Variated Final Temperature and Workpiece Thickness for Hot Rolling of Aluminum Alloy EN AW-8011

Numerical Simulation as a Tool for the Study, Development, and Optimization of Rolling Processes: A Review

A Geometry-Dependent Void Closure Model Considering Void Deformation and Orientation Changes during Hot Metal Formation

Contact Info

Product

Resources

About