Behaviour of Metastable and Stable Austenitic Stainless Steels Under Planar-Biaxial Load

Wolf, Carl H.; Henkel, Sebastian; Biermann, Horst

doi:10.1007/978-3-030-42603-3_14

Cited by 1 publication

(1 citation statement)

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“…Cheng et al [12] explored the size effect on the yield behavior of metal foil under multiaxial stress states and revealed that both size and shape of the yield locus are influenced by size effect and stress states. Wolf et al [13,14] calculated the K-factors for cruciform specimens. Kleemola and Ranta-Eskola [15] reported the variation of strain hardening parameters of different sheet metals in uniaxial and biaxial tension.…”

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confidence: 99%

Biaxial Tensile Behavior of Commercially Pure Titanium under Various In-Plane Load Ratios and Strain Rates

Zhang

Zhu

Zhou

et al. 2021

Metals

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The aim of the present work is to contribute to the characterization of the biaxial tensile behavior of commercially pure titanium, under various in-plane loading conditions at room temperature, by a non-contact digital image correlation system. Several loading conditions, with load ratio ranging from 4:0 to 0:4 and displacement rate ranging from 0.001 to 0.1 mm/s, are examined. It is found that the yield strength and ultimate tensile strength of biaxial sample are greater than that of uniaxial sample, where the equi-biaxial sample shows the highest strength. It is also observed that increase in strain rate leads to remarkable improvement of tensile strength. Fractographic analysis indicates that the shape and size of dimples are load ratio and strain rate dependent. Additionally, a modified Johnson–Cook constitutive model was proposed to account for the effect of strain rate on biaxial tensile deformation. The experimental results are in good agreement with the simulated results, indicating that the proposed model is reliable to predict biaxial tensile deformation of commercially pure titanium at different strain rates.

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