---
_id: '62024'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n               <jats:p>This paper presents
    a characterization of the microstructural evolution and its correlation with the
    magnetic structure due to flow forming of semi-finished tubes of austenitic stainless
    steel AISI 304L. The plastic deformation triggers a phase transformation of the
    metastable austenite into α’-martensite.</jats:p>\r\n               <jats:p>Depending
    on the combination of production parameters, different fractions of strain-induced
    α’-martensite were measured by means non-destructive micromagnetic techniques
    and correlated with the evolution of hardness and the microstructure using electron
    backscatter diffraction analyses. The magneto-optical Kerr effect analysis was
    used as a tool to perform a qualitative analysis of the evolution of the magnetic
    domain structure correlated with the formation of α’-martensite. An analysis of
    these data allowed to derive surface magnetization hysteresis loops that were
    compared with integral hysteresis loops of the specimens. It was proven by both
    methods that the formation of martensite increases the magnetic energy and the
    spontaneous magnetization of the specimens. The results of this investigation
    contribute to a better understanding of micromagnetic sensors to monitor and control
    the formation of α’-martensite in a flow forming. Furthermore, various techniques
    have demonstrated the evolution of the magnetic properties of the material, which
    can be applied in applications for invisible coding of workpieces.</jats:p>"
author:
- first_name: Julian
  full_name: Rozo Vasquez, Julian
  last_name: Rozo Vasquez
- first_name: Jan
  full_name: Tappe, Jan
  last_name: Tappe
- first_name: Bahman
  full_name: Arian, Bahman
  id: '36287'
  last_name: Arian
- first_name: Lukas
  full_name: Kersting, Lukas
  last_name: Kersting
- first_name: Werner
  full_name: Homberg, Werner
  id: '233'
  last_name: Homberg
- first_name: Ansgar
  full_name: Trächtler, Ansgar
  id: '552'
  last_name: Trächtler
- first_name: Frank
  full_name: Walther, Frank
  last_name: Walther
citation:
  ama: Rozo Vasquez J, Tappe J, Arian B, et al. Magneto-optical Kerr effect analysis
    of strain-induced martensite formation during flow forming of metastable austenitic
    steel AISI 304L. <i>Practical Metallography</i>. 2025;62(9-10):617-633. doi:<a
    href="https://doi.org/10.1515/pm-2025-0059">10.1515/pm-2025-0059</a>
  apa: Rozo Vasquez, J., Tappe, J., Arian, B., Kersting, L., Homberg, W., Trächtler,
    A., &#38; Walther, F. (2025). Magneto-optical Kerr effect analysis of strain-induced
    martensite formation during flow forming of metastable austenitic steel AISI 304L.
    <i>Practical Metallography</i>, <i>62</i>(9–10), 617–633. <a href="https://doi.org/10.1515/pm-2025-0059">https://doi.org/10.1515/pm-2025-0059</a>
  bibtex: '@article{Rozo Vasquez_Tappe_Arian_Kersting_Homberg_Trächtler_Walther_2025,
    title={Magneto-optical Kerr effect analysis of strain-induced martensite formation
    during flow forming of metastable austenitic steel AISI 304L}, volume={62}, DOI={<a
    href="https://doi.org/10.1515/pm-2025-0059">10.1515/pm-2025-0059</a>}, number={9–10},
    journal={Practical Metallography}, publisher={Walter de Gruyter GmbH}, author={Rozo
    Vasquez, Julian and Tappe, Jan and Arian, Bahman and Kersting, Lukas and Homberg,
    Werner and Trächtler, Ansgar and Walther, Frank}, year={2025}, pages={617–633}
    }'
  chicago: 'Rozo Vasquez, Julian, Jan Tappe, Bahman Arian, Lukas Kersting, Werner
    Homberg, Ansgar Trächtler, and Frank Walther. “Magneto-Optical Kerr Effect Analysis
    of Strain-Induced Martensite Formation during Flow Forming of Metastable Austenitic
    Steel AISI 304L.” <i>Practical Metallography</i> 62, no. 9–10 (2025): 617–33.
    <a href="https://doi.org/10.1515/pm-2025-0059">https://doi.org/10.1515/pm-2025-0059</a>.'
  ieee: 'J. Rozo Vasquez <i>et al.</i>, “Magneto-optical Kerr effect analysis of strain-induced
    martensite formation during flow forming of metastable austenitic steel AISI 304L,”
    <i>Practical Metallography</i>, vol. 62, no. 9–10, pp. 617–633, 2025, doi: <a
    href="https://doi.org/10.1515/pm-2025-0059">10.1515/pm-2025-0059</a>.'
  mla: Rozo Vasquez, Julian, et al. “Magneto-Optical Kerr Effect Analysis of Strain-Induced
    Martensite Formation during Flow Forming of Metastable Austenitic Steel AISI 304L.”
    <i>Practical Metallography</i>, vol. 62, no. 9–10, Walter de Gruyter GmbH, 2025,
    pp. 617–33, doi:<a href="https://doi.org/10.1515/pm-2025-0059">10.1515/pm-2025-0059</a>.
  short: J. Rozo Vasquez, J. Tappe, B. Arian, L. Kersting, W. Homberg, A. Trächtler,
    F. Walther, Practical Metallography 62 (2025) 617–633.
date_created: 2025-10-30T12:22:54Z
date_updated: 2025-10-30T12:54:17Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.1515/pm-2025-0059
intvolume: '        62'
issue: 9-10
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1515/pm-2025-0059
oa: '1'
page: 617-633
publication: Practical Metallography
publication_identifier:
  issn:
  - 2195-8599
  - 0032-678X
publication_status: published
publisher: Walter de Gruyter GmbH
status: public
title: Magneto-optical Kerr effect analysis of strain-induced martensite formation
  during flow forming of metastable austenitic steel AISI 304L
type: journal_article
user_id: '82875'
volume: 62
year: '2025'
...