Development of sample-scale shear bands during necking of ferrite-austenite sheet

Carlson, Jean M.; Bird, J. E.

doi:10.1016/0001-6160(87)90115-5

Cited by 14 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An example of an older experimental work based on conventional microscopic observations of the metallographic structure during deformation is given in Carlson and Bird (1987). Examples of modern methods used in observations of plastic deformation and necking behaviour are Brunet et al (1998), Brunet and Morestin (2001), Suprapedi and Toyooka (1997), Gong and Toyooka (1999), Wattrisse et al (2001a,b), Vial-Edwards et al (2001), Quinta da Fonseca et al (2004), Guelorget et al (2006), Martí nez et al (2003, Labbé and Cordero (2007).…”

Section: Introductionmentioning

confidence: 99%

Spatially resolved observations of strain fields at necking and fracture of anisotropic hardened steel sheet material

Eman

Sundin

Oldenburg

2009

International Journal of Solids and Structures

View full text Add to dashboard Cite

a b s t r a c tIn this work plastic strain localization, also referred to as necking, of press-hardened ultra-high strength steel is observed using digital speckle correlation. The region of the neck is studied during tensile tests of specimens specially designed to facilitate strain localization at an inner point of the material, thus avoiding edge effects on localization and fracture. By using measurements with a length scale small enough to properly resolve the neck, its growth and shape can be studied. Furthermore, the anisotropy of the material is investigated by examining specimens cut out at different angles to the rolling direction. It is seen that the local fracture strain of specimens cut out along the rolling direction is approximately twice as high as it is for specimens cut out perpendicular to the rolling direction.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatially resolved observations of strain fields at necking and fracture of anisotropic hardened steel sheet material

Eman

Sundin

Oldenburg

2009

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…[41] Carlson et al investigated the shear band formation with the help of optical strain measurements in a two-phase material. [42] For this purpose, they focused on the lateral changes in the position of a single-phase, i.e., local austenitic fractions, to characterize the overall shape changes on the surface of the sample.…”

mentioning

confidence: 99%

Characterization of Mechanical Properties, Macroscopic Deformation Behavior, and Microstructure of Functionally Graded 22MnB5 Steel

Scharifi

Schade

Ademaj³

et al. 2021

steel research int.

View full text Add to dashboard Cite

The ongoing global trend toward carbon dioxide emission reduction forced the automotive industry to design lighter and resource-efficient vehicle bodies, leading to the huge success of the press hardening process. [1][2][3][4][5] One reason for this success lies in the availability of thin-walled ultrahigh strength steel 22MnB5, which combines good formability and highest strength properties of 1500 MPa at a fully martensitic structure after press hardening at reasonable costs. [6,7] Since the first application in the automotive industry in 1986 as a side-impact beam, [8] the application field of 22MnB5 components increases continuously from B-pillar to roof rail reinforcement and other parts to enhance passenger safety. [9,10] The thermomechanical approach of press hardening allows the production of complex-shaped components with high dimensional accuracy, [11] excellent mechanical properties, and, at the same time, offers the opportunity for realizing tailored properties. [12,13] Although a time-temperature course of uniform austenitization and quenching in a cooled forming tool, Figure 1a, results in a homogenous fully martensitic structure with highest strength, a locally varying time-temperature course during the forming process, Figure 1b, enables the creation of a tailored distribution of microstructures, where mechanical properties are locally adjusted to perfectly meet the load profile, e.g., in case of crash-relevant components. [5,6] According to Ademaj et al., after uniform austenitization at 930 C but differential cooling of 22MnB5, zones following "route H" develop highest tensile strengths (1500 MPa) whereas zones following "route S" show lower tensile strength properties (614 MPa). [14] Both process strategies of Figure 1 are chosen for the current study with respect to the aforementioned investigations.This approach has been identified as a viable option to obtain lighter body structures through the ability to design load adapted structures and to combine contradictory requirements within one component. [14,15] A prominent example in car body structures is the B-pillar, in which the bottom section exhibits higher

show abstract

Advanced Models for the Prediction of Forming Limit Curves

Banabic

Comşa

Eyckens

et al. 2016

Multiscale Modelling in Sheet Metal Forming

View full text Add to dashboard Cite

Development of sample-scale shear bands during necking of ferrite-austenite sheet

Cited by 14 publications

References 37 publications

Spatially resolved observations of strain fields at necking and fracture of anisotropic hardened steel sheet material

Spatially resolved observations of strain fields at necking and fracture of anisotropic hardened steel sheet material

Characterization of Mechanical Properties, Macroscopic Deformation Behavior, and Microstructure of Functionally Graded 22MnB5 Steel

Advanced Models for the Prediction of Forming Limit Curves

Contact Info

Product

Resources

About