Archives of Metallurgy and Materials

Sozańska-Jędrasik, Liwia; Mazurkiewicz, J.; Borek, Wojciech; Matus, Krzysztof

doi:10.24425/118937

2018

DOI: 10.24425/118937

|View full text |Cite

Archives of Metallurgy and Materials

Liwia Sozańska-Jędrasik

J. Mazurkiewicz

Wojciech Borek

et al.

Abstract: Th e work presents the results of investigations into the structure and phase composition of newly developed high manganese steels of the X98MnAlSiNbTi24-11 and X105MnAlSi24-11 type. The average density of such steels is 6.67 g/cm 3 , which is 15% lower as compared to typical structural steels. An analysis of phase composition and structure allows to conclude that the investigated steels feature an austenitic γ-Fe(Mn,Al,C) structure with uniformly distributed and elongated α-Fe(Mn,Al) ferrite grains on the bou… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2022

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Effect of Cr on Phase Transformation Behavior of Austenite in Fe-20Mn-9Al-1.2C-xCr Low-Density Steels During Isothermal Aging

Zhang

Jiang

et al. 2022

Met. Mater. Int.

View full text Add to dashboard Cite

The influence of Cr on the microstructural evolution of austenite in Fe-20Mn-9Al-1.2C-xCr (wt%, x = 0, 3 and 6) low-density steels during isothermal aging at 650 °C for various durations was systematically investigated. With the isothermal aging processed, the 0Cr and 3Cr samples underwent the divorced eutectoid transformation followed by the eutectoid transformation, while only the eutectoid transformation was observed in the 6Cr sample. Meanwhile, increasing Cr content changed the eutectoid transformation products from ferrite + κ-carbide in the 0Cr sample to ferrite + κ-carbide + M 23 C 6 carbide in the 3Cr sample, and to ferrite + M 7 C 3 carbide in the 6Cr sample. The Cr addition significantly increased the A1 temperature (655 °C) of the 0Cr sample to 712 °C of the 3Cr sample, and to 841 °C of the 6Cr sample. As a result, the temperature difference between the A1 temperature and experimental phase transformation temperature (650 °C) was enlarged, which provided a greater driving force for the eutectoid transformation and accelerated the transformation rate of eutectoid transformation. In addition, the Cr addition had a significant effect on the diffusion of constituent elements, decreased the interlayer spacing of pearlite structure from 625 ± 30 nm in the 0Cr sample to 385 ± 25 nm in the 3Cr sample, and to 150 ± 20 nm in the 6Cr sample, refining the eutectoid structure. These findings revealed the mechanism regarding the effect of Cr addition on the eutectoid transformation of austenite, offering valuable insights into the microstructure design of high-performance lowdensity steels.

show abstract

Effect of Cr on Phase Transformation Behavior of Austenite in Fe-20Mn-9Al-1.2C-xCr Low-Density Steels During Isothermal Aging

Zhang

Jiang

et al. 2022

Met. Mater. Int.

View full text Add to dashboard Cite

show abstract

Microstructure and Continuous Cooling Transformation of an Fe-7.1Al-0.7Mn-0.4C-0.3Nb Alloy

Gurgel

Júnior

Teixeira

et al. 2022

Metals

View full text Add to dashboard Cite

Reducing pollutant emissions and improving safety standards are primary targets for modern mobility improvement. To meet these needs, the development of low-density steels containing aluminum is a new frontier of research for automotive applications. Low-density Fe-Mn-Al-C alloys are promising. In this regard, an alloy with high aluminum content and niobium addition belonging to the Fe-Mn-Al-C system was evaluated to understand the possible phase transformations and thus obtain a transformation diagram by continuous cooling to help future processing. Dilatometry tests were performed in a Gleeble thermomechanical simulator with different cooling rates (1, 3, 5, 10, 15, 20, 30, and 50 °C/s). Chemical analyses carried out simultaneously with dilatometry tests showed the presence of proeutectoid ferrite (αp), δ-ferrite, retained austenite, and niobium carbide (NbC). In the case of low cooling rates (1 and 3 °C/s), lamellar colonies of the eutectoid microconstituents were observed with a combination of α-ferrite and k-carbide. For higher cooling rates (5 to 50 °C/s), martensite was observed with body-centered cubic (BCC) and body-centered tetragonal (BCT) structures.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Archives of Metallurgy and Materials

Cited by 2 publications

References 33 publications

Effect of Cr on Phase Transformation Behavior of Austenite in Fe-20Mn-9Al-1.2C-xCr Low-Density Steels During Isothermal Aging

Effect of Cr on Phase Transformation Behavior of Austenite in Fe-20Mn-9Al-1.2C-xCr Low-Density Steels During Isothermal Aging

Microstructure and Continuous Cooling Transformation of an Fe-7.1Al-0.7Mn-0.4C-0.3Nb Alloy

Contact Info

Product

Resources

About