Effect of strain and strain rate on the bauschinger effect response of three different steels

Han, Kunpeng; Tyne, C. J. Van; Lévy, Bernard

doi:10.1007/s11661-005-0110-7

Cited by 54 publications

(30 citation statements)

References 10 publications

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“…) is calculated from the following equation [6]. So, the ratio of the Bauschinger effect decreases the rate of the yield point, and is an evaluation indicator in which back stress is made dimensionless by the mechanical property.…”

Section: Bauschinger Effectmentioning

confidence: 99%

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Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets

Watanabe¹,

Natori²,

Tanaka³

et al. 2010

WIT Transactions on the Built Environment

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The purpose of this study is to investigate the deformation property, under a high strain rate, of high strength steel sheets. The influence of strain rate on the Bauschinger effect is clarified, and the relation between the mechanical property and this influence is formulized. In this study, three kinds (590MPa, 780MPa, 980MPa) of high strength steel sheets of the Dual Phase type were applied. Both the rolling direction and the transverse direction specimens are created, and the compressive-tensile tests are conducted on three conditions of strain rate 7.0x10 -3 , 10 and 100/s. As a result, it is shown clearly in Dual Phase steels that the dependence of strain rate on the Bauschinger effect exists. In addition, with the transformation of material into high strength, it is demonstrated that consideration of the influence of the Bauschinger effect becomes increasingly important; however, the need for consideration of the dependence of the strain rate and the influence of strength anisotropy on the Bauschinger effect decrease for a material model in a numerical simulation.

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Section: Bauschinger Effectmentioning

confidence: 99%

“…With regard to Dual Phase steels, many data on the Bauschinger effect has been reported [4,5], while the dependency of strain rate on the effect has been reported in the condition of strain rate from 0.001 to 0.01/s only [6], which has not been clarified in higher strain rates.…”

Section: Introductionmentioning

confidence: 99%

Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets

Watanabe¹,

Natori²,

Tanaka³

et al. 2010

WIT Transactions on the Built Environment

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show abstract

“…[8] Recent research has shown a Bauschinger effect dependence on microalloying element particles [9] and dislocation structure: [10] with an increase in particle volume fraction and dislocation density, the yield stress drop in the direction of reverse strain increases. To predict the strength change, in practice, one needs a quantitative model of dislocation-particle interaction influence on the yield stress.…”

Section: Introductionmentioning

confidence: 99%

Bauschinger Effect in Microalloyed Steels: Part I. Dependence on Dislocation-Particle Interaction

Kostryzhev

Strangwood

Davis

2010

Metall Mater Trans A

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The Bauschinger effect (yield stress decreasing at the start of reverse deformation after forward prestrain) is an important factor in strength development for cold metal forming technology. In steels, the magnitude of the Bauschinger effect depends on composition, through the presence of microalloy precipitates, and prior processing, through the size and distribution of microalloy precipitates and presence of retained work hardening. In this article, the microstructures of two (Nb-and Nb-V-microalloyed) steel plates, in terms of (Ti,Nb,V,Cu)-rich particle distributions and dislocation densities, have been quantitatively related to the Bauschinger parameters for the same processing conditions. For the 12-to 50-nm effective particle size range, the Bauschinger stress parameter increases with the particle number density and dislocation density increase. The relative influence of these two microstructure parameters is discussed.

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“…Particle chemistry, size and distribution should be considered to describe the influence of precipitates on the Bauschinger effect. Han [22] found that Bauschinger effect increases with pre-strain. He quantitated Bauschinger effect as with as the yield strength in compression and as the stress around which the cyclic stress-strain curve is reversed.…”

Section: B Orowan Theorymentioning

confidence: 99%

Bauschinger Effect in spring Back Prediction of High Strength Steel: A Theoretical Approach

K¹

2018

IJRASET

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Press formed components are in huge demand now a days. Especially high strength steels are widely acceptable by different industries because of their high weight to strength ratio. Due to Poor formability, it is quite difficult to work with high strength steels. Dimensional inaccuracy is main concern with the metals having poor formability which leads to springback. So for better control over dimensions especially in assembled component springback must be predicted in advance. Accurate Springback prediction is a very crucial for commercial aspect. Many of process parameter directly or indirectly influences the springback during forming process of high strength process. Bauschinger effect is one of parameter which play important role during forming process. Many researchers already develop springback prediction model but most of them avoid consideration of Bauschinger effect due to complexity involved in Bauschinger effect. The springback results obtained from such model are far away when we consider them with experimental results. So it is very crucial to consider Bauschinger effect during springback prediction which gives near by results with experimental results. This paper deals with theories of Bauschinger effect and its impact on springback prediction modelling. Keywords: Bauschinger effect, Springback, Bending, formability, High strength steel I. INTRODUCTIONHigh strength steel covered majority share in sheet metal industries in last few years due to its good strength to weight ratio. High strength and advance high strength steel are in high demand especially in automotive and aerospace industries. While dealing with sheet metal process, springback is the one of the most critical issue. High strength steel offers a higher rate of springback because springback rate is increase with material strength. Springback is a shape change of final geometry after removal of load. It is an elasticity driven incident which is mostly manages by the stress state obtained at the end of a deformation. Depending on the product geometry and deformation regime, there are several types of springback in sheet metal forming: bending, membrane, twisting and combined bending and membrane [1]. Springback is a phenomenon to describe the elastic recovery of sheet metal after a forming operation in which the strip unbends itself after forming. Sheet metals are prone to some amount of springback due to elastic deformation. Springback prediction is a major issue for the sheet metal manufacture to evaluate the desired shape of a product. Springback refers to the shape discrepancy between the fully loaded and unloaded configurations.[2] Accurate prediction and controlling of spring back is essential in the design of tools for sheet metal forming. High strength steel sheets have played a key role in weight reduction for environmental considerations and improved crashworthiness in the automotive industry in recent years. But at the same time sheet metal forming of high strength steel is itself a critical issue since such high stren...

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Effect of strain and strain rate on the bauschinger effect response of three different steels

Cited by 54 publications

References 10 publications

Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets

Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets

Bauschinger Effect in Microalloyed Steels: Part I. Dependence on Dislocation-Particle Interaction

Bauschinger Effect in spring Back Prediction of High Strength Steel: A Theoretical Approach

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