Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels

Knaislová, Anna; Rudomilova, Darya; Novák, Pavel; Prošek, Tomáš; Michalcová, Alena; Beran, Přemysl

doi:10.3390/ma12244033

Open AccessArticle

Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels

by

Anna Knaislová

^1,*

,

Darya Rudomilova

¹,

Pavel Novák

¹

,

Tomáš Prošek

¹

,

Alena Michalcová

¹

and

Přemysl Beran

^2,3

¹

Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technická 5, 166 28 Prague, Czech Republic

²

Nuclear Physics Institute, Czech Academy of Sciences, 250 68 Řež, Czech Republic

³

European Spallation Source ERIC, 222 70 Lund, Sweden

^*

Author to whom correspondence should be addressed.

Materials 2019, 12(24), 4033; https://doi.org/10.3390/ma12244033

Submission received: 4 November 2019 / Revised: 27 November 2019 / Accepted: 2 December 2019 / Published: 4 December 2019

(This article belongs to the Special Issue The Progress of Advance High-Strength Steels (AHSS))

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Abstract

The phase composition and portion of individual phases in advanced high-strength steels (AHSS) CP1000 and DP1000 was studied by complementary microscopic and diffraction techniques. CP1000 and DP1000 steel grades have a high strength-to-density ratio and they are used in many applications in the automotive industry. The microstructure of the CP1000 “complex phase” steel consists of ferrite, bainite, martensite and a small amount of retained austenite. DP1000 is a dual phase steel, which has a structure of a ferritic matrix with islands of martensite and a minor amount of retained austenite. The influence of selected etchants (Nital, LePera, Beraha I, Nital followed by metabisulfite, Nital followed by LePera, and Nital followed by Beraha I) on the microstructure image is described. X-ray diffraction, neutron diffraction and light optical, scanning and transmission electron microscopy were used in this work for advanced characterization of the microstructure and phase composition. The information provided by each technique is critically compared.

Keywords: high strength steels; microstructure; etching agents

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MDPI and ACS Style

Knaislová, A.; Rudomilova, D.; Novák, P.; Prošek, T.; Michalcová, A.; Beran, P. Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels. Materials 2019, 12, 4033. https://doi.org/10.3390/ma12244033

AMA Style

Knaislová A, Rudomilova D, Novák P, Prošek T, Michalcová A, Beran P. Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels. Materials. 2019; 12(24):4033. https://doi.org/10.3390/ma12244033

Chicago/Turabian Style

Knaislová, Anna, Darya Rudomilova, Pavel Novák, Tomáš Prošek, Alena Michalcová, and Přemysl Beran. 2019. "Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels" Materials 12, no. 24: 4033. https://doi.org/10.3390/ma12244033

APA Style

Knaislová, A., Rudomilova, D., Novák, P., Prošek, T., Michalcová, A., & Beran, P. (2019). Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels. Materials, 12(24), 4033. https://doi.org/10.3390/ma12244033

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels

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