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Eddy Current Detection of the Martensitic Transformation in AISI304 Induced upon Cryogenic Cutting

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Lara V. Fricke
  • Hai Nam Nguyen
  • Bernd Breidenstein
  • David Zaremba
  • Hans Jürgen Maier
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Details

OriginalspracheEnglisch
Aufsatznummer2000299
FachzeitschriftSteel research international
Jahrgang92
Ausgabenummer1
Frühes Online-Datum14 Okt. 2020
PublikationsstatusVeröffentlicht - 5 Jan. 2021

Abstract

The combination of a hard subsurface layer and a ductile component core is advantageous for many applications. Steels are often heat treated to create such a hardened subsurface, which is both time- and energy-consuming. It is of great advantage to create a hardened subsurface directly within the machining process, as the production line of most components includes such a process to produce the desired geometric dimensions and surface quality. To achieve a martensitic subsurface layer within the machining process, cryogenic, external turning using a metastable AISI304 austenitic steel is used herein. Herein eddy current testing and the analysis of higher harmonics are used for the detection of the ferromagnetic, martensitic phase in the parent austenite. A good correlation is found between the martensite content and the amplitude of the signals measured. Therefore, eddy current testing is considered as a suitable real-time, nondestructive testing method, which forms the basis for the generation of a tailored, deformation-induced martensitic subsurface layer during external turning.

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Eddy Current Detection of the Martensitic Transformation in AISI304 Induced upon Cryogenic Cutting. / Fricke, Lara V.; Nguyen, Hai Nam; Breidenstein, Bernd et al.
in: Steel research international, Jahrgang 92, Nr. 1, 2000299, 05.01.2021.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Fricke LV, Nguyen HN, Breidenstein B, Zaremba D, Maier HJ. Eddy Current Detection of the Martensitic Transformation in AISI304 Induced upon Cryogenic Cutting. Steel research international. 2021 Jan 5;92(1):2000299. Epub 2020 Okt 14. doi: 10.1002/srin.202000299
Fricke, Lara V. ; Nguyen, Hai Nam ; Breidenstein, Bernd et al. / Eddy Current Detection of the Martensitic Transformation in AISI304 Induced upon Cryogenic Cutting. in: Steel research international. 2021 ; Jahrgang 92, Nr. 1.
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abstract = "The combination of a hard subsurface layer and a ductile component core is advantageous for many applications. Steels are often heat treated to create such a hardened subsurface, which is both time- and energy-consuming. It is of great advantage to create a hardened subsurface directly within the machining process, as the production line of most components includes such a process to produce the desired geometric dimensions and surface quality. To achieve a martensitic subsurface layer within the machining process, cryogenic, external turning using a metastable AISI304 austenitic steel is used herein. Herein eddy current testing and the analysis of higher harmonics are used for the detection of the ferromagnetic, martensitic phase in the parent austenite. A good correlation is found between the martensite content and the amplitude of the signals measured. Therefore, eddy current testing is considered as a suitable real-time, nondestructive testing method, which forms the basis for the generation of a tailored, deformation-induced martensitic subsurface layer during external turning.",
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