Microstructural change in austenitic Fe-30.0wt%Mn-7.8wt%Al-1.3wt%C initiated by spinodal decomposition and its influence on mechanical properties

Choo, Woong Kil; Kim, J.H.; Yoon, Jong Chan

doi:10.1016/s1359-6454(97)00201-2

Cited by 201 publications

(105 citation statements)

References 36 publications

Supporting

Mentioning

102

Contrasting

Order By: Relevance

“…This indicates that the alloy B (5Cr) exhibited the best corrosion resistance in 3.5% NaCl solution. (2) Compared to the previous studies of the as-quenched austenitic FeAlMnCrC alloys with Cr 3%, the present result shows that the E corr and E pp would be pronouncedly increased as the Cr content was added up to 5%. The reason is that the 5% Cr could be completely dissolved within the austenite matrix at 1373 K. …”

Section: Discussioncontrasting

confidence: 83%

See 1 more Smart Citation

Effect of Chromium Content on Corrosion Behaviors of Fe-9Al-30Mn-(3,5,6.5,8)Cr-1C Alloys

et al. 2007

View full text Add to dashboard Cite

The corrosion behaviors of the as-quenched austenitic 5,6.5,8)%Cr-1%C (in mass%) alloys in 3.5% NaCl solution have been examined. Passivation could be observed for all of the four alloys. The corrosion potential (E corr ) and pitting potential (E pp ) increased pronouncedly as Cr content increased from 3 to 5%, and decreased as Cr content up to 6.5 and 8%. The decrease of E corr and E pp of alloys containing 6.5 and 8% Cr was due to the formation of (Fe,Mn,Cr) 7 C 3 carbides within the austenite matrix and on the grain boundaries. The present result indicates that the Fe-9%Al-30%Mn-5%Cr-1%C alloy exhibited the highest corrosion resistance in 3.5% NaCl solution. It is worthy to note that the corrosion behaviors of the austenitic FeAlMnCrC alloys with higher Cr (! 3%) content have never been reported in previous literature.

show abstract

Section: Discussioncontrasting

confidence: 83%

“…In previous studies, [1][2][3][4][5][6] it is clear that fully austenitic Fe-(7.8-10.0)%Al-(28.0-32.2)%Mn-(0.86-1.30)%C alloys could posses excellent mechanical properties. However, the corrosion resistance of the austenitic FeAlMnC alloys in aqueous environments was not adequate for the applications in industry.…”

Section: Introductionmentioning

confidence: 96%

Effect of Chromium Content on Corrosion Behaviors of Fe-9Al-30Mn-(3,5,6.5,8)Cr-1C Alloys

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The former is still outstanding due to mold flux problem. Some progress has been made in solving the latter challenge [2][3][4][5][6]. It is noticed that a high Al steel with austenite () matrix possesses better formability than that with ferrite (α) matrix [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of κ-carbide interface structure on the formability of lightweight steels

Qin

2016

Materials & Design

View full text Add to dashboard Cite

Abstractκ-carbide () in high aluminium (Al) steels is grown from austenite () via + or α+ ( represents ferrite), and is a lamellar structure. This work demonstrates that the formability of high Al lightweight steels is affected by the lattice misfit and interface shape between  and matrix. The cold workability can be improved by either to change the steel chemical constitution or to implement an electro-thermo-mechanical process. For ferrite-matrix-based high Al steel, electric-current promotes the spheroidization and refinement of  structure and reduces volume fraction of  phase. This retards the crack nucleation and propagation, and hence improves the materials formability. The observation is caused by a direct effect of electric-current rather than side effects.

show abstract

“…[1][2][3][4][5][6][7][8] These studies have shown that in the as-quenched condition, the microstructure of the alloy with a chemical composition in the range of Fe-(26-34)%Mn-(6-11)%Al-(0.54-1.3)%C was single-phase austenite (). After being aged at 500-750 C for moderate times, fine and coarse (Fe,Mn) 3 AlC carbides ( carbides) having an L'1 2 -type structure were observed to precipitate coherently within the austenite matrix and also heterogeneously on the austenite grain boundaries, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…carbide + -Mn reaction, or a ! þ carbide + -Mn reaction, [5][6][7][8] depending on the chemical composition and aging temperature. In order to improve the corrosion resistance, chromium has been added to the austenitic FeMnAlC alloys.…”

Section: Introductionmentioning

confidence: 99%

Grain Boundary Precipitation in Fe-30Mn-9Al-5Cr-0.7C Alloy

et al. 2008

View full text Add to dashboard Cite

The as-quenched microstructure of the Fe-30%Mn-9%Al-5%Cr-0.7%C (in mass%) alloy was single-phase austenite. When the as-quenched alloy was aged at 550 C-750 C, fine (Fe,Mn) 3 AlC carbides were formed within the austenite matrix. In addition, as the aging temperature increased, a M 7 C 3 carbide + D0 3 ! M 7 C 3 carbide + B2 ! M 7 C 3 carbide + (ferrite) phase transition had occurred on the grain boundaries. This grain boundary precipitation behavior has never before been observed in FeMnAlC and FeMnAlCrC alloy systems.

show abstract

Microstructural change in austenitic Fe-30.0wt%Mn-7.8wt%Al-1.3wt%C initiated by spinodal decomposition and its influence on mechanical properties

Cited by 201 publications

References 36 publications

Effect of Chromium Content on Corrosion Behaviors of Fe-9Al-30Mn-(3,5,6.5,8)Cr-1C Alloys

Effect of Chromium Content on Corrosion Behaviors of Fe-9Al-30Mn-(3,5,6.5,8)Cr-1C Alloys

Influence of κ-carbide interface structure on the formability of lightweight steels

Grain Boundary Precipitation in Fe-30Mn-9Al-5Cr-0.7C Alloy

Contact Info

Product

Resources

About