Designing Heusler nanoprecipitates by elastic misfit stabilization in Fe–Mn maraging steels

Millán, J.; Sandlöbes, Stefanie; Al-Zubi, A.; Hickel, Tilmann; Choi, Pyuck‐Pa; Neugebauer, Jörg; Ponge, Dirk; Raabe, Dierk

doi:10.1016/j.actamat.2014.05.016

Cited by 70 publications

(27 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2 Although this alloy contained 0.39 wt% of Mn, it was not enough to form θ intermetallics. Al-containing steels has been observed [23,25]. This shows that Ni and Al have strong interrelations as they tend to form B2 intermetallics; Ti and Mn additions modify this structure by transitioning into L2 1 precipitates, and when both elements are added, Ti has preference to form Ni 2 AlTi.…”

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 90%

“…Mn promote the transition from θ to finely dispersed Ni 2 MnAl; this effect also increases the strength of the steel [23]. Schober et al [53] observed in Fe Ni Al Mo the formation of -NiAl.…”

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 98%

“…Similarly, Zhu et al [20] did not measure any carbon content in C300. Additionally, no carbide formation was reported in M350 [21], 5Mn [22], Fe12Ni6Mn [15], LeanLAl and LeanLAl [23], and the Mar6-13 grades [7]. No carbon content in Fe8Ni8Mn was reported [24].…”

Section: A Number Of Fementioning

confidence: 99%

“…This shows that Ni and Al have strong interrelations as they tend to form B2 intermetallics; Ti and Mn additions modify this structure by transitioning into L2 1 precipitates, and when both elements are added, Ti has preference to form Ni 2 AlTi. Ti additions to the Fe Ni Ti Mo system promote the formation of rod-shaped Ni 3 Ti (η) in high-Ni containing steels, showing an apparent higher strength than the Al-containing steels at lower ageing temperatures [23,25]. Mo additions to this system in Co-free alloys promote the formation of the laves phase Fe 2 Mo; however, Tewari et al [45] showed that Fe 2 Mo intermetallics form at temperatures below 500°C and after 100 h of ageing due to the low diffusivity of Mo in Fe.…”

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 99%

See 3 more Smart Citations

Predicting microstructure and strength of maraging steels: Elemental optimisation

Galindo-Nava

Rainforth

Rivera-Dı́az-del-Castillo

2016

Acta Materialia

143

View full text Add to dashboard Cite

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 90%

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 98%

Section: A Number Of Fementioning

confidence: 99%

Section: Compositional Effects On Intermetallic Formationmentioning

confidence: 99%

See 2 more Smart Citations

Predicting microstructure and strength of maraging steels: Elemental optimisation

Galindo-Nava

Rainforth

Rivera-Dı́az-del-Castillo

2016

Acta Materialia

143

View full text Add to dashboard Cite

“…Precipitation of nanoparticles has been recognized as one of the most effective methods to increase the strength of steels, and precipitation hardening has become the foundation in the development of many grades of highstrength steels [1][2][3][4][5][6][7][8]. It is known that the degree of strengthening so obtained is highly dependent upon the precipitate microstructure, including the structure, morphology, size, and interparticle spacing of the nanoparticles [9].…”

Section: Introductionmentioning

confidence: 99%

Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel

Jiao

Luan

Guo

et al. 2017

Materials Research Letters

View full text Add to dashboard Cite

The Cu and NiAl nanoscale precipitation and interfacial segregation in the martensite and austenite phases within a high-strength steel were studied by atom-probe tomography (APT). In the martensite phase, APT reveals the precipitation of isolated NiAl nanoparticles and NiAl/Cu co-precipitates, indicating that NiAl nanoparticles form first in the precipitation sequence. In comparison, the austenite phase contains only Cu nanoparticles with Ni segregation at the particle/matrix interface, in which the Ni segregation reduces the Cu nanoparticle interfacial energy. In addition, Mn and C exhibit an enrichment at the martensite/austenite interface, and the mechanism for the interfacial segregation was also discussed. IMPACT STATEMENTThe understanding of nanoscale precipitation and interfacial segregation mechanism provides the basis for the control of precipitate microstructures and mechanical properties of nanoparticlestrengthened steels. ARTICLE HISTORY

show abstract

Yield Strength Enhancement Without Ductility Loss Through Controlling the Intercritical Annealing Time in Medium‐Mn Steels

Elbeltagy

Shen

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

Herein, the effect of shortening the intercritical annealing (IA) time in a two‐step process “intercritical annealing and tempering (IAT)” on the microstructure and the mechanical properties of medium‐manganese steel (MMnS) made of Fe–0.05C–7Mn–1.5Cu–1.5Ni–1.5Al–1.5Si–0.5Mo (wt%) and containing copper‐rich (CRP) and Ni(Al/Mn) precipitates is investigated. The atom probe tomography (APT), electron backscattering diffraction (EBSD), and the synchrotron X‐ray diffraction (SYXRD) are used to study precipitation, phase microstructure evolution, the austenite stability, and deformation mechanisms. Shortening the IA step, which is carried out at 700 °C, from 2 min (IAT‐2) to 1 min (IAT‐1), results in a yield strength (YS) increment of around 218 MPa with less than 1% loss of ductility. While the enhanced yield strength in IAT‐1 is attributed to the four times higher precipitates’ number density (n), the insignificant loss of ductility is attributed to the enhanced austenite stability factor from 4.5 to 9.2 in IAT‐2 and IAT‐1, respectively. The simultaneous increase in YS without ductility loss reflects that controlling the IA time is a promising strategy to overcome the yield strength and ductility trade‐off without the need for higher additions of costly alloying elements such as Ni, Al, Mn, and Cu.

show abstract

Designing Heusler nanoprecipitates by elastic misfit stabilization in Fe–Mn maraging steels

Cited by 70 publications

References 45 publications

Predicting microstructure and strength of maraging steels: Elemental optimisation

Predicting microstructure and strength of maraging steels: Elemental optimisation

Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel

Yield Strength Enhancement Without Ductility Loss Through Controlling the Intercritical Annealing Time in Medium‐Mn Steels

Contact Info

Product

Resources

About