Effect of temper rolling on tensile properties of low-Si Al-killed sheet steel

Ma, Qing-Long; Wang, Dongcheng; Liu, Hong-min; Lu, Huazhong

doi:10.1016/s1006-706x(09)60045-5

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…This increase is more pronounced at 0.2% and 0.5% reduction. This can be attributed to the strain hardening created by the temper rolling reduction applied to the cold material, whereas, according to Grassino et al, the UTSs of the steels do not show an apparent change because of temper rolling elongation [8]. The results obtained by Fang et al are similar to the findings of the present study: they reported that the strength values of C-Mn steels increased with an increase in temper rolling reduction [6].…”

Section: Resultssupporting

confidence: 86%

“…The results obtained by Ma et al are also consistent with the findings of this study: the tensile strength increased when the thickness reduction increased. This increase in the transverse direction was greater than that of the lengthways direction under the same conditions [8].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is necessary to consider not only the flatness and surface roughness of the strip but also the mechanical properties in defining the appropriate reduction. On the other hand, it should be noted that the aging time should be as long as possible in order to prolong the shelf life of the material [4–8]. The present study aims to demonstrate the effect of the deformation ratio on the strain aging time of the low-carbon steels.

Figure 1. Typical yield point behaviour [1].…”

Section: Introductionmentioning

confidence: 99%

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How the skin-pass rolling reduction ratio affects the strain aging behaviour of low-carbon steel sheets

Çolak

2021

Ironmaking & Steelmaking

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When producing cold-rolled steel sheets, the penultimate annealing process is followed by a final skin-pass rolling (or temper rolling) whose purpose is to eliminate any discontinuous yielding which creates stretcher-strain markings when the steel sheets are formed. To find out the critical reduction ratio eliminating the discontinuous yield phenomenon, the samples were annealed at 820°C for 3 min and then subjected to the temper rolling at various thickness reductions at room temperature. Results showed that the discontinuous yield phenomenon could not be eliminated in the case of a thickness reduction less than 0.5%, that a certain reduction ratio should be exceeded to eliminate the discontinuous yielding, and that the aging time varied depending on the reduction ratio. In addition, while the low-carbon steels did not undergo strain aging in three months with a 1% thickness reduction, they underwent strain aging in at least four months with higher thickness reductions.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Figure 1. Typical yield point behaviour [1].…”

Section: Introductionmentioning

confidence: 99%

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How the skin-pass rolling reduction ratio affects the strain aging behaviour of low-carbon steel sheets

Çolak

2021

Ironmaking & Steelmaking

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“…However, completely eliminating YPE is difficult, especially for deep-drawing quality materials which contain a significant amount of free interstitial elements such as carbon and nitrogen. Keeping in mind that an elongation of 1% is applied to the strip by the temper mill after annealing, any edge breaks with a YPE equal to or less than 1% before temper rolling will be eliminated by the temper mill [5,6]. Therefore, a YPE of less than 1% provides the criteria for an acceptable Lüders bands reduction.…”

Section: Introductionmentioning

confidence: 99%

Control of edge breaks during cold mill processing of commercial and drawing quality low-carbon steels

Zhou

Zurob

Zhang

et al. 2018

Ironmaking & Steelmaking

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The effects of chemistry, reduction ratio and annealing cycle on edge breaks/Lüder lines during cold mill processing of commercial and drawing quality low-carbon steels have been investigated. It is possible to eliminate Lüder bands and associated yield-point elongation (YPE) by producing interstitial free steels that do not contain any free C or N. In low-carbon steel, however, it is necessary to develop other strategies for reducing Lüdering and YPE. Reduction ratios and annealing cycles that resulted in a uniform, completely recrystallised microstructure were ineffective at reducing YPE. It was determined that the most promising approach for reducing YPE in steels containing free interstitials is to develop a heterogeneous microstructure. This was achieved through abnormal grain-growth in the full-recrystallised material to create a bimodal grain-size distribution. The implications for the production of commercial and drawing quality lowcarbon steels are discussed.

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“…The effect of temper rolling on the tensile properties of low Si-Al killed sheet steel was empirically studied by Ma et al (2009). The results indicate that yield strength initially decreased with greater thickness reduction of up to 1% and afterward increased for thickness reduction values above 1%.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temper Rolling on Tensile Property of Low Carbon Steel Sheets by Application of Hill 48 Anisotropic Yield Criterion

Jafarlou

Hassan

Mardi

et al. 2014

Procedia Engineering

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Temper rolling is a fundamental process applied in steel industries to improve the tensile properties of sheet steels by eliminating discontinuous yield behaviours. Virtually evaluating the effects of temper rolling mechanics on eliminating discontinuity is still a crucial problem due to a lack of comprehensive constitutive material models that correctly describe this elimination mechanism. In this paper, modified anisotropic constitutive model based on Hill's 48 yield criterion are used for finite element analysis (FEA) of the temper rolling process. This model was applied for four different sheet thicknesses and the FEA results are compared with experimental results obtained directly from the production line. According to the results, the customized model that implements the modified anisotropic yielding criterion efficiently describes the tensile behaviour of low carbon steels following temper rolling, and it more accurately predicts the lower and upper yielding points than the isotropic yielding criterion. This model thus assists to facilitate the simulation, optimization and prediction of mechanical properties following temper rolling.

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Effect of temper rolling on tensile properties of low-Si Al-killed sheet steel

Cited by 6 publications

References 3 publications

How the skin-pass rolling reduction ratio affects the strain aging behaviour of low-carbon steel sheets

How the skin-pass rolling reduction ratio affects the strain aging behaviour of low-carbon steel sheets

Control of edge breaks during cold mill processing of commercial and drawing quality low-carbon steels

Influence of Temper Rolling on Tensile Property of Low Carbon Steel Sheets by Application of Hill 48 Anisotropic Yield Criterion

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