Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

A correlation between grain boundary character and deformation twin nucleation mechanism in coarse-grained high-Mn austenitic steel

Journal Article · · Scientific Reports

Abstract

In polycrystalline materials, grain boundaries are known to be a critical microstructural component controlling material’s mechanical properties, and their characters such as misorientation and crystallographic boundary planes would also influence the dislocation dynamics. Nevertheless, many of generally used mechanistic models for deformation twin nucleation in fcc metal do not take considerable care of the role of grain boundary characters. Here, we experimentally reveal that deformation twin nucleation occurs at an annealing twin (Σ3{111}) boundary in a high-Mn austenitic steel when dislocation pile-up at Σ3{111} boundary produced a local stress exceeding the twining stress, while no obvious local stress concentration was required at relatively high-energy grain boundaries such as Σ21 or Σ31. A periodic contrast reversal associated with a sequential stacking faults emission from Σ3{111} boundary was observed by in-situ transmission electron microscopy (TEM) deformation experiments, proving the successive layer-by-layer stacking fault emission was the deformation twin nucleation mechanism, different from the previously reported observations in the high-Mn steels. Since this is also true for the observed high Σ-value boundaries in this study, our observation demonstrates the practical importance of taking grain boundary characters into account to understand the deformation twin nucleation mechanism besides well-known factors such as stacking fault energy and grain size.

Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-06ER15786
OSTI ID:
1778438
Alternate ID(s):
OSTI ID: 1816440
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 11; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (58)

Transmission Electron Microscopy book January 2009
The influence of grain boundaries on mechanical properties journal December 1972
Atomistic simulations of grain boundary energies in austenitic steel journal January 2019
The Role of Grain Orientation and Grain Boundary Characteristics in the Mechanical Twinning Formation in a High Manganese Twinning-Induced Plasticity Steel journal April 2018
A dislocation model for twinning in f.c.c. metals journal August 1963
Twin-slip interaction in f.c.c. crystals journal June 1977
Kinetics of flow and strain-hardening journal November 1981
A computer simulation study of 〈001〉 and 〈111〉 tilt boundaries: the multiplicity of structures journal July 1984
A coincidence — Ledge — Dislocation description of grain boundaries journal February 1968
A formation mechanism of mechanical twins in F.C.C. Metals journal June 1975
Comments on deformation twinning in silver- and copper-alloy crystals journal August 1975
On the criteria for slip transmission across interfaces in polycrystals journal January 1992
A Peierls criterion for the onset of deformation twinning at a crack tip journal May 2003
High strength Fe–Mn–(Al, Si) TRIP/TWIP steels development — properties — application journal January 2000
Analysis of grain boundary networks and their evolution during grain boundary engineering journal February 2003
A dislocation-based model for all hardening stages in large strain deformation journal September 1998
Extrinsic stacking faults and twinning in hadfield manganese steel single crystals journal February 2001
Nucleation of dislocations from [001] bicrystal interfaces in aluminum journal August 2005
Structure and free volume of 〈110〉 symmetric tilt grain boundaries with the E structural unit journal June 2007
Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals journal March 2008
Atomistic modeling of interfaces and their impact on microstructure and properties journal February 2010
Dislocation–grain boundary interaction in 〈111〉 textured thin metal films journal September 2010
Energy of slip transmission and nucleation at grain boundaries journal January 2011
Dislocation–twin interactions in nanocrystalline fcc metals journal January 2011
Quasi-four-dimensional analysis of dislocation interactions with grain boundaries in 304 stainless steel journal November 2012
The five-parameter grain boundary character and energy distributions of a fully austenitic high-manganese steel using three dimensional data journal May 2014
An effective stacking fault energy viewpoint on the formation of extended defects and their contribution to strain hardening in a Fe–Mn–Si–Al twinning-induced plasticity steel journal March 2015
Atomic-scale intergranular crack-tip plasticity in tilt grain boundaries acting as an effective dislocation source journal April 2015
Twinning-induced plasticity (TWIP) steels journal January 2018
On the deformation twinning mechanisms in twinning-induced plasticity steel journal December 2017
A review on atomistic simulation of grain boundary behaviors in face-centered cubic metals journal June 2016
High manganese austenitic twinning induced plasticity steels: A review of the microstructure properties relationships journal August 2011
Dislocation nucleation from bicrystal interfaces with dissociated structure journal January 2007
Dislocation nucleation in Σ3 asymmetric tilt grain boundaries journal February 2008
Reactions of lattice dislocations with grain boundaries in Mg: Implications on the micro scale from atomic-scale calculations journal May 2014
Grain size altering yielding mechanisms in ultrafine grained high-Mn austenitic steel: Advanced TEM investigations journal September 2021
Grain boundary characterization and energetics of superalloys journal October 2010
The effects of grain size on yielding, strain hardening, and mechanical twinning in Fe–18Mn–0.6C–1.5Al twinning-induced plasticity steel journal January 2016
Influence of original austenite grain size on tensile properties of a high-manganese transformation-induced plasticity (TRIP) steel journal February 2018
Tensile properties and twinning behavior of high manganese austenitic steel with fine-grained structure journal November 2008
A universal scaling of planar fault energy barriers in face-centered cubic metals journal April 2011
Plastic deformation mechanism in nanotwinned metals: An insight from molecular dynamics and mechanistic modeling journal June 2012
Grain size effect on strain hardening in twinning-induced plasticity steels journal June 2012
The mechanism of mechanical twinning near grain boundaries in twinning-induced plasticity steel journal January 2020
Introduction to Conventional Transmission Electron Microscopy book January 2009
New twinning route in face-centered cubic nanocrystalline metals journal December 2017
Continuum understanding of twin formation near grain boundaries of FCC metals with low stacking fault energy journal May 2017
Direct observation of dislocation plasticity in high-Mn lightweight steel by in-situ TEM journal October 2019
TEM in situ deformation study of the interaction of lattice dislocations with grain boundaries in metals journal July 1990
TEM investigation of the formation mechanism of deformation twins in Fe–Mn–Si–Al TWIP steels journal December 2013
On dislocation pole models for twinning journal November 1974
Deformation behavior of duplex austenite and ε -martensite high-Mn steel journal February 2013
Development of a novel straining holder for transmission electron microscopy compatible with single tilt-axis electron tomography journal April 2015
〈110〉 symmetric tilt grain-boundary structures in fcc metals with low stacking-fault energies journal September 1996
Asymmetric ability of grain boundaries to generate dislocations under tensile or compressive loadings journal November 2010
Roles of grain boundaries in improving fracture toughness of ultrafine-grained metals journal June 2011
Coincidence-site lattices and complete pattern-shift in cubic crystals journal March 1974
State-of-the-knowledge on TWIP steel journal May 2012

Similar Records

Related Subjects