Experimental Investigations on Anisotropic Evolution of 304 Stainless Sheets under Tensile Pre-Strains

Teng, L.; Guo, Cheng

doi:10.1063/1.3623594

Cited by 7 publications

(2 citation statements)

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“…Many scholars studied the effect of tensile prestrain on uniaxial tensile properties and concluded that the yield strength increased whereas elongation decreased after tensile prestrain. [2][3][4][5] Uniaxial tensile responses of 304 stainless steel after torsional prestrain and tensile prestrain are shown in Figure 2. The data after torsional prestrain were reproduced from our previously published articles.…”

Section: Comparison Of Torsional Prestrain and Tensile Prestrain Onmentioning

confidence: 99%

“…It was found that with the increase of tensile prestrain, the yield and tensile strength increased whereas the ductility and low cycle fatigue (LCF) life decreased. [2][3][4][5][6] In addition, a large prestrain in the plastic deformation stage, for example, necking stage, will cause great damage to materials. 7 During the prestrain process, dislocation walls, dislocation cells and so forth were formed, which increased the strength and affected the cyclic responses of the material.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of low cycle fatigue behavior of 304 stainless steels induced by tensile and torsional prestrain

Jin

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

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The effect of tensile and torsional prestrains on fatigue lives of 304 stainless steels is compared. The fatigue life as a function of prestrain amplitudes exhibits an ‘S’ curve, and the inflexion point of the S curve is affected by prestrain modes and cyclic strain amplitudes. An interesting phenomenon is that when the onset stress of secondary hardening reaches 300 MPa, intergranular martensite begins to be formed. Combining martensite distribution, fatigue life and cyclic stress responses, the onset stress of secondary hardening is proposed to reflect the location of martensite nucleation sites. Compared with tensile prestrain, torsional prestrain results in higher stress. In addition, higher prestrain and cyclic amplitudes also lead to higher cyclic stress and hence earlier nucleation of intergranular martensite. Furthermore, the influence mechanism of prestrain modes and cyclic strain amplitudes on the inflexion point of S curve is revealed.

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Section: Comparison Of Torsional Prestrain and Tensile Prestrain Onmentioning

confidence: 99%