Segregation engineering enables nanoscale martensite to austenite phase transformation at grain boundaries: a pathway to ductile martensite

D Raabe, S Sandlöbes, J Millán, D Ponge, H Assadi… - Acta Materialia, 2013 - Elsevier
Abstract In an Fe–9 at.% Mn maraging alloy annealed at 450° C reversed allotriomorphic
austenite nanolayers appear on former Mn decorated lath martensite boundaries. The …

Linear complexions: Confined chemical and structural states at dislocations

M Kuzmina, M Herbig, D Ponge, S Sandlöbes… - Science, 2015 - science.org
For 5000 years, metals have been mankind's most essential materials owing to their ductility
and strength. Linear defects called dislocations carry atomic shear steps, enabling their …

Mechanism and application of reverse austenitic transformation in medium Mn steels: a systematic review

Q Guo, B Hu, H Luo - steel research international, 2022 - Wiley Online Library
In this contribution, the nucleation and growth mechanism of austenite during the intercritical
annealing (IA) of medium Mn steels (MMSs) are reviewed. The nucleation of austenite can …

On the selection of the optimal intercritical annealing temperature for medium Mn TRIP steel

S Lee, BC De Cooman - Metallurgical and Materials Transactions A, 2013 - Springer
A model is proposed to predict the room temperature austenite volume fraction as a function
of the intercritical annealing temperature for medium Mn transformation-induced plasticity …

Difference in transformation behavior between ferrite and austenite formations in medium manganese steel

N Nakada, K Mizutani, T Tsuchiyama, S Takaki - Acta materialia, 2014 - Elsevier
The difference in transformation behavior between the γ→ α and α′→ γ transformations at
the transition temperature T 0 was investigated in 0.1% C–5% Mn steel. The γ→ α …

Nanoscale austenite reversion through partitioning, segregation and kinetic freezing: Example of a ductile 2 GPa Fe–Cr–C steel

L Yuan, D Ponge, J Wittig, P Choi, JA Jiménez… - Acta Materialia, 2012 - Elsevier
Austenite reversion during tempering of a Fe–13.6 Cr–0.44 C (wt.%) martensite results in an
ultra-high-strength ferritic stainless steel with excellent ductility. The austenite reversion …

Orientation of austenite reverted from martensite in Fe-2Mn-1.5 Si-0.3 C alloy

X Zhang, G Miyamoto, Y Toji, S Nambu, T Koseki… - Acta Materialia, 2018 - Elsevier
The orientation of austenite (γ) reverted from lath martensite has been studied using electron
backscatter diffraction (EBSD) in Fe-2% Mn-1.5% Si-0.3% C (mass%) alloy. Two …

Austenite reversion in low-carbon martensitic stainless steels–a CALPHAD-assisted review

F Niessen - Materials Science and Technology, 2018 - Taylor & Francis
Low-carbon martensitic stainless steels with 11.5–16 wt-% Cr and< 0.07 wt-% C are
characterised by high corrosion resistance, strength, ductility and impact toughness …

Growth mode of austenite during reversion from martensite in Fe-2Mn-1.5 Si-0.3 C alloy: A transition in kinetics and morphology

X Zhang, G Miyamoto, T Kaneshita, Y Yoshida, Y Toji… - Acta Materialia, 2018 - Elsevier
The kinetics and element partitioning during austenite (γ) reversion from lath martensite in
Fe-2Mn-1.5 Si-0.3 C (mass%) alloy have been investigated. Two different types of γ in terms …

Investigation of the evolution of retained austenite in Fe–13% Cr–4% Ni martensitic stainless steel during intercritical tempering

S Zhang, P Wang, D Li, Y Li - Materials & Design, 2015 - Elsevier
The microstructure and amount of retained austenite (the austenite remained at room
temperature) evolved in Fe–13% Cr–4% Ni martensitic stainless steel during intercritical …