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Deformation behaviour of high-manganese steel with addition of niobium under quasi-static tensile loading Cover

Deformation behaviour of high-manganese steel with addition of niobium under quasi-static tensile loading

Materials Science-Poland
Volume 40 (2022): Issue 3 (September 2022)
By: Magdalena Barbara Jabłońska,  Katarzyna Jasiak,  Karolina Kowalczyk,  Iwona Bednarczyk,  Mateusz Skwarski,  Marek Tkocz and  Zbigniew Gronostajski  
Open Access
|Dec 2022

Figures & Tables

Fig. 1

Microstructure of the high-manganese MnAlNb steel after solution annealing at 1,100°C/2 h: austenite with annealing twins; the average grain diameter – 125 μm; light microscopy

Fig. 2

Geometric features of specimens used in the tensile tests at strain rates of: (A) 0.001–0.1 s−1 and (B) 0.5 s−1

Fig. 3

The simultaneous measurement of temperature and strain during deformation: (A) experimental set-up for the mechanical testing, (B) black–white pattern for DIC measurement, (C) evaluation area in GOM Correlate, (D) example of the strain distribution image. DIC, Digital Image Correlation

Fig. 4

Regions selected for the microstructure analysis

Fig. 5

The engineering (A) and true (B) stress–strain curves obtained for the MnAlNb steel from the tensile tests conducted at various strain rates

Fig. 6

Thermograms and DIC strain distribution maps at the moment just before fracture. DIC, digital image correlation

Fig. 7

The hardness distribution in one piece of the fractured specimen: (A) 0.001 s−1 and (B) 0.1 s−1

Fig. 8

Dependence of the major strain and hardness value on a distance from the fracture: a) 0.001 s−1, b) 0.01 s−1, c) 0.1 s−1, d) 0.5 s−1

Fig. 9

Microstructure of MnAl-Nb steel deformed at various strain rates; longitudinal sections taken in regions A and regions B; light microscopy

Fig. 10

Microstructure of MnAlNb steel deformed at various strain rates in the regions A and B, SEM. SEM, scanning electron microscopy

Chemical composition of the examined steel [%wt]

CMnAlVNbBPSCeLaNdFe
0.4720.13.0–0.100.003<0.010.0030.0110.0040.004rest

Values of UTS, total elongation and temperature of MnAlNb steel for different strain rates

Strain rate (s−1)Ultimate tensile strength, UTS (MPa)Total elongation (%)Average temperature in the necked region (°C)
0.0014965042
0.015903966
0.15704579
0.557552104
DOI: https://doi.org/10.2478/msp-2022-0029 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 1 - 11
Submitted on: Oct 29, 2022
|
Accepted on: Nov 17, 2022
|
Published on: Dec 30, 2022
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
TWIP steel,
high-manganese steel,
hardness,
tensile testing,
IR thermography,
DIC
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2022 Magdalena Barbara Jabłońska, Katarzyna Jasiak, Karolina Kowalczyk, Iwona Bednarczyk, Mateusz Skwarski, Marek Tkocz, Zbigniew Gronostajski, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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