Failure behaviour of various pre-formed steel sheets with respect to the mechanical grain boundary properties

Norz, R.; Vitzthum, Simon; Volk, Wolfram

doi:10.1007/s12289-022-01700-9

Cited by 3 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pre-forming of the material took place on a hydraulic Dieffenbacher press in combination with a modified Marciniak-tool developed by Weinschenk and Volk [7]. To ensure a homogenous plane-strain pre-forming, the specimen geometry was adapted from prior investigations [8,9] and was optimized for the used DP600 steel. The change in loading direction is obtained by a rotation of the tensile test and Nakajima specimens.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the influence of loading direction after pre-forming on the formability and mechanical properties of DP600

Norz

2023

Materials Research Proceedings

View full text Add to dashboard Cite

Abstract. The material behaviour after non-proportional strain paths is subject of numerous current investigations. These investigations show that in addition to the stress state, a change in the direction of loading also has a significant influence on the material behaviour. In this work, the influence of non-proportional strain paths on the mechanical properties such as tensile strength, uniform strain, elongation at fracture and yield strength as well as the influence on formability is determined. For this purpose, a dual-phase steel CR330Y590-DP, with a thickness of 0.8 mm, is investigated in more detail. The material is pre-strained to different strain values and then further examined with Nakajima and tensile tests. The influence of the loading direction is determined by five different post-strain directions (0°, 22,5°, 45°, 67.5°and 90°) to the initial pre-strain direction. In addition to the method according to the standard, the yield strength is determined by a temperature-dependent determination method, which is based on the thermoelastic effect. This method has already been qualified for simple uniaxial tensile tests and a relation to the microstructural behaviour was proven. Thus, it provides valuable conclusions on the microstructural behavior for the tests performed within this study with a change in the loading direction.

show abstract

Section: Methodsmentioning

confidence: 99%

Investigation of the influence of loading direction after pre-forming on the formability and mechanical properties of DP600

Norz

2023

Materials Research Proceedings

View full text Add to dashboard Cite

show abstract

“…Due to the complexity of generating different strain paths that deviate from the uniaxial tension, few is found in the literature here. Most deal with uniaxial prestrained blanks and subsequent testing of cross tensile, tensile, Nakajima or plane strain specimens in different rolling directions [9], [10].…”

Section: Strain-path Dependent Hardeningmentioning

confidence: 99%

“…This tool is shown in Figure 1. The material flow in this tool we can control by using specimens of different widths and by the drawing bead [10]. For the series of tests presented in this paper, we created three different pre-strain conditions.…”

Section: Pre-strain Conditionsmentioning

confidence: 99%

Innovative experimental setup for the investigation of material models with regard to strain hardening behavior

Maier

Eder

Norz

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Sheet metal formed parts are often produced in multistage processes. The multi-directional deformations that occur in this process pose a challenge for sufficiently accurate modeling of the material behavior. In this paper, we present an experimental methodology and its potential that serves as a basis for a comprehensive validation of material models with respect to multi-directional deformation. Therefore, we present the experimental results of pre-strained DP600 specimens, which we afterwards subjected by the MUC-Test. The MUC-Test has already been established as a methodology for validating material models under proportional loading. By using pre-strained specimens, this methodology can be extended to non-linearities in the load history. For the purpose of the paper, we pre-strain the sheet material in three conditions: uniaxial tension, plane strain and equibiaxial tension. Thus, we show that the MUC-Test is suitable for the representation of multi-directional strain histories and useful for comprehensive validation of material models.

show abstract

Microstructure and properties of additive manufacturing by gas-shielded arc welding with hydrogen-resistant steel wires

Chun,

XinYu,

WenQing

et al. 2024

Weld World

View full text Add to dashboard Cite

Failure behaviour of various pre-formed steel sheets with respect to the mechanical grain boundary properties

Cited by 3 publications

References 31 publications

Investigation of the influence of loading direction after pre-forming on the formability and mechanical properties of DP600

Investigation of the influence of loading direction after pre-forming on the formability and mechanical properties of DP600

Innovative experimental setup for the investigation of material models with regard to strain hardening behavior

Microstructure and properties of additive manufacturing by gas-shielded arc welding with hydrogen-resistant steel wires

Contact Info

Product

Resources

About