Experimental characterization of microstructure development during loading path changes in bcc sheet steels

T. Clausmeyer, G. Gerstein, S. Bargmann, B. Svendsen, Antonius H. van den Boogaard, B. Zillmann

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)
39 Downloads (Pure)

Abstract

Interstitial free sheet steels show transient work hardening behavior, i.e., the Bauschinger effect and cross hardening, after changes in the loading path. This behavior affects sheet forming processes and the properties of the final part. The transient work hardening behavior is attributed to changes in the dislocation structure. In this work, the morphology of the dislocation microstructure is investigated for uniaxial and plane strain tension, monotonic and forward to reverse shear, and plane strain tension to shear. Characteristic features such as the thickness of cell walls and the shape of cells are used to distinguish microstructural patterns corresponding to different loading paths. The influence of the crystallographic texture on the dislocation structure is analyzed. Digital image processing is used to create a “library” of schematic representations of the dislocation microstructure. The dislocation microstructures corresponding to uniaxial tension, plane strain tension, monotonic shear, forward to reverse shear, and plane strain tension to shear can be distinguished from each other based on the thickness of cell walls and the shape of cells. A statistical analysis of the wall thickness distribution shows that the wall thickness decreases with increasing deformation and that there are differences between simple shear and uniaxial tension. A change in loading path leads to changes in the dislocation structure. The knowledge of the specific features of the dislocation structure corresponding to a loading path may be used for two purposes: (i) the analysis of the homogeneity of deformation in a test sample and (ii) the analysis of a formed part
Original languageEnglish
Pages (from-to)674-689
Number of pages16
JournalJournal of materials science
Volume48
Issue number2
DOIs
Publication statusPublished - 18 Aug 2013

Fingerprint

Steel sheet
Microstructure
Strain hardening
Cells
Schematic diagrams
Hardening
Statistical methods
Image processing
Textures

Keywords

  • IR-82751
  • METIS-288092

Cite this

Clausmeyer, T. ; Gerstein, G. ; Bargmann, S. ; Svendsen, B. ; van den Boogaard, Antonius H. ; Zillmann, B. / Experimental characterization of microstructure development during loading path changes in bcc sheet steels. In: Journal of materials science. 2013 ; Vol. 48, No. 2. pp. 674-689.
@article{875d3da21e314fbe8c08b8fd55a978e3,
title = "Experimental characterization of microstructure development during loading path changes in bcc sheet steels",
abstract = "Interstitial free sheet steels show transient work hardening behavior, i.e., the Bauschinger effect and cross hardening, after changes in the loading path. This behavior affects sheet forming processes and the properties of the final part. The transient work hardening behavior is attributed to changes in the dislocation structure. In this work, the morphology of the dislocation microstructure is investigated for uniaxial and plane strain tension, monotonic and forward to reverse shear, and plane strain tension to shear. Characteristic features such as the thickness of cell walls and the shape of cells are used to distinguish microstructural patterns corresponding to different loading paths. The influence of the crystallographic texture on the dislocation structure is analyzed. Digital image processing is used to create a “library” of schematic representations of the dislocation microstructure. The dislocation microstructures corresponding to uniaxial tension, plane strain tension, monotonic shear, forward to reverse shear, and plane strain tension to shear can be distinguished from each other based on the thickness of cell walls and the shape of cells. A statistical analysis of the wall thickness distribution shows that the wall thickness decreases with increasing deformation and that there are differences between simple shear and uniaxial tension. A change in loading path leads to changes in the dislocation structure. The knowledge of the specific features of the dislocation structure corresponding to a loading path may be used for two purposes: (i) the analysis of the homogeneity of deformation in a test sample and (ii) the analysis of a formed part",
keywords = "IR-82751, METIS-288092",
author = "T. Clausmeyer and G. Gerstein and S. Bargmann and B. Svendsen and {van den Boogaard}, {Antonius H.} and B. Zillmann",
year = "2013",
month = "8",
day = "18",
doi = "10.1007/s10853-012-6780-9",
language = "English",
volume = "48",
pages = "674--689",
journal = "Journal of materials science",
issn = "0022-2461",
publisher = "Springer",
number = "2",

}

Experimental characterization of microstructure development during loading path changes in bcc sheet steels. / Clausmeyer, T.; Gerstein, G.; Bargmann, S.; Svendsen, B.; van den Boogaard, Antonius H.; Zillmann, B.

In: Journal of materials science, Vol. 48, No. 2, 18.08.2013, p. 674-689.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Experimental characterization of microstructure development during loading path changes in bcc sheet steels

AU - Clausmeyer, T.

AU - Gerstein, G.

AU - Bargmann, S.

AU - Svendsen, B.

AU - van den Boogaard, Antonius H.

AU - Zillmann, B.

PY - 2013/8/18

Y1 - 2013/8/18

N2 - Interstitial free sheet steels show transient work hardening behavior, i.e., the Bauschinger effect and cross hardening, after changes in the loading path. This behavior affects sheet forming processes and the properties of the final part. The transient work hardening behavior is attributed to changes in the dislocation structure. In this work, the morphology of the dislocation microstructure is investigated for uniaxial and plane strain tension, monotonic and forward to reverse shear, and plane strain tension to shear. Characteristic features such as the thickness of cell walls and the shape of cells are used to distinguish microstructural patterns corresponding to different loading paths. The influence of the crystallographic texture on the dislocation structure is analyzed. Digital image processing is used to create a “library” of schematic representations of the dislocation microstructure. The dislocation microstructures corresponding to uniaxial tension, plane strain tension, monotonic shear, forward to reverse shear, and plane strain tension to shear can be distinguished from each other based on the thickness of cell walls and the shape of cells. A statistical analysis of the wall thickness distribution shows that the wall thickness decreases with increasing deformation and that there are differences between simple shear and uniaxial tension. A change in loading path leads to changes in the dislocation structure. The knowledge of the specific features of the dislocation structure corresponding to a loading path may be used for two purposes: (i) the analysis of the homogeneity of deformation in a test sample and (ii) the analysis of a formed part

AB - Interstitial free sheet steels show transient work hardening behavior, i.e., the Bauschinger effect and cross hardening, after changes in the loading path. This behavior affects sheet forming processes and the properties of the final part. The transient work hardening behavior is attributed to changes in the dislocation structure. In this work, the morphology of the dislocation microstructure is investigated for uniaxial and plane strain tension, monotonic and forward to reverse shear, and plane strain tension to shear. Characteristic features such as the thickness of cell walls and the shape of cells are used to distinguish microstructural patterns corresponding to different loading paths. The influence of the crystallographic texture on the dislocation structure is analyzed. Digital image processing is used to create a “library” of schematic representations of the dislocation microstructure. The dislocation microstructures corresponding to uniaxial tension, plane strain tension, monotonic shear, forward to reverse shear, and plane strain tension to shear can be distinguished from each other based on the thickness of cell walls and the shape of cells. A statistical analysis of the wall thickness distribution shows that the wall thickness decreases with increasing deformation and that there are differences between simple shear and uniaxial tension. A change in loading path leads to changes in the dislocation structure. The knowledge of the specific features of the dislocation structure corresponding to a loading path may be used for two purposes: (i) the analysis of the homogeneity of deformation in a test sample and (ii) the analysis of a formed part

KW - IR-82751

KW - METIS-288092

U2 - 10.1007/s10853-012-6780-9

DO - 10.1007/s10853-012-6780-9

M3 - Article

VL - 48

SP - 674

EP - 689

JO - Journal of materials science

JF - Journal of materials science

SN - 0022-2461

IS - 2

ER -