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Quantifying the resistance to dislocation glide in single phase FeCrAl alloy

Journal Article · · International Journal of Plasticity
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of Nebraska, Lincoln, NE (United States); Univ. of Nebraska, Lincoln, NE (United States)
  2. Univ. of Nebraska, Lincoln, NE (United States)
  3. Univ. of Nebraska, Lincoln, NE (United States); Shanghai Jiao Tong Univ. (China). State Key Lab of Metal Matrix Composites
  4. Univ. of Nebraska, Lincoln, NE (United States). Nebraska Center for Materials and Nanoscience
The resistance to dislocation glide associated with slip systems {110}<111> and {112}<111> in single phase FeCrAl alloy is measured via micromechanical testing in a scanning electronic microscopy at room temperature. Two important factors, the shape and orientation of a pillar, are discussed with respect to the glide resistance and stress-strain response. Maximizing Schmid factor of one specific slip system while minimizing others is recommended in order to diminish obvious dislocations-induced hardening during in-situ testing. Apparent Schmid factor analysis is conducted to select grains with preferred orientations. Two types of pillars with conventional cylindrical shape or dog-bone shape are tested under compression to estimate the resistance to dislocation glide and evaluate the effect of pillar shape on the compression stress-strain response. One dog-bone pillar is tested under tension to check the tension-compression isotropy of dislocation slip. We discover that the shape of a pillar to a smaller extent affects the measured resistance but strongly influences the stress strain response. Cylindrical pillars exhibit apparent hardening associated with early yielding due to stress or strain concentration at contact region, while dog-bone pillars show an obvious yielding and continuous shearing without hardening. The resistance is 220 MPa for slip system {110}<111> and 230 MPa for slip system {112}<111>. Finite element analysis is performed to account for the influence of pillar shape and contact condition on mechanical response.
Research Organization:
Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Organization:
USDOE; USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
NE0008787
OSTI ID:
1848161
Alternate ID(s):
OSTI ID: 1643160
Journal Information:
International Journal of Plasticity, Journal Name: International Journal of Plasticity Journal Issue: C Vol. 132; ISSN 0749-6419
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (69)

Bildung und diffusion von Kinken als grundprozess der Versetzungsbewegung bei der messung der inneren reibung journal April 1962
Material rate dependence and localized deformation in crystalline solids journal December 1983
Micromechanics of Crystals and Polycrystals book January 1983
Dislocation Core Effects on Mobility book January 2004
A further step towards an understanding of size-dependent crystal plasticity: In situ tension experiments of miniaturized single-crystal copper samples journal February 2008
Athermal mechanisms of size-dependent crystal flow gleaned from three-dimensional discrete dislocation simulations journal August 2008
Smaller is stronger: The effect of strain hardening journal December 2009
Atomistically informed crystal plasticity model for body-centered cubic iron journal May 2012
Crystal plasticity investigation of the microstructural factors influencing dislocation channeling in a model irradiated bcc material journal May 2016
A phenomenological dislocation mobility law for bcc metals journal October 2016
Dislocation strengthening in FCC metals and in BCC metals at high temperatures journal March 2017
Sequential { 10 1 ¯ 2 } twinning stimulated by other twins in titanium journal June 2017
Experimentally quantifying critical stresses associated with basal slip and twinning in magnesium using micropillars journal August 2017
Overview on micro- and nanomechanical testing: New insights in interface plasticity and fracture at small length scales journal January 2018
Dislocation loop evolution during in-situ ion irradiation of model FeCrAl alloys journal September 2017
Ferrite slip system activation investigated by uniaxial micro-tensile tests and simulations journal March 2018
Secondary twin variant selection in four types of double twins in titanium journal June 2018
In-situ TEM observation of { 10 1 ¯ 2 } twin-dominated deformation of Mg pillars: Twinning mechanism, size effects and rate dependency journal October 2018
Nanoindentation: Measuring methods and applications journal January 2010
An explicit formulation for multiscale modeling of bcc metals journal December 2008
Analysis of heterogeneous deformation and dislocation dynamics in single crystal micropillars under compression journal February 2010
Crystallographic orientation and size dependence of tension–compression asymmetry in molybdenum nano-pillars journal January 2012
Micropillar compression of LiF [111] single crystals: Effect of size, ion irradiation and misorientation journal September 2012
Effect of surface orientation on the plasticity of small bcc metals journal October 2013
Plastic anisotropy of electro-deposited pure α-iron with sharp crystallographic <111>// texture in normal direction: Analysis by an explicitly dislocation-based crystal plasticity model journal January 2014
Strain rate effects on the mechanical response in multi- and single-crystalline Cu micropillars: Grain boundary effects journal November 2013
Grain size dependence of the strength of metals: The Hall–Petch effect does not scale as the inverse square root of grain size journal February 2014
Stochastic effects in plasticity in small volumes journal January 2014
Size-dependent creep of duralumin micro-pillars at room temperature journal April 2014
Gradient crystal plasticity including dislocation-based work-hardening and dislocation transport journal June 2015
Second-order work and strain burst in single-crystalline micropillar plasticity journal February 2016
A comparison of collective dislocation motion from single slip quantitative topographic analysis during in-situ AFM room temperature tensile tests on Cu and Feα crystals journal September 2016
Numerical study of the size-dependent deformation morphology in micropillar compressions by a dislocation-based crystal plasticity model journal December 2016
A differential-exponential hardening law for non-Schmid crystal plasticity finite element modeling of ferrite single crystals journal April 2017
Specimen size and shape dependent yield strength in micropillar compression deformation of Mo single crystals journal May 2017
Interpreting strain burst in micropillar compression through instability of loading system journal August 2018
Dislocation mechanism based size-dependent crystal plasticity modeling and simulation of gradient nano-grained copper journal February 2019
Revealing orientation-dependent martensitic transformation in a medium Mn steel by micropillar compression journal December 2019
Phase transformation and precipitation during solidification of FeCrAl alloy for automobile exhaust gas purifying systems journal August 2017
Monotonous deformation behavior of ferritic FeCrAl alloy in the dynamic strain aging regime journal June 2018
Crystal plasticity model for BCC iron atomistically informed by kinetics of correlated kinkpair nucleation on screw dislocation journal April 2014
A physically based model of temperature and strain rate dependent yield in BCC metals: Implementation into crystal plasticity journal January 2015
High temperature oxidation of fuel cladding candidate materials in steam–hydrogen environments journal September 2013
Advanced oxidation-resistant iron-based alloys for LWR fuel cladding journal May 2014
Radiation tolerance of neutron-irradiated model Fe–Cr–Al alloys journal October 2015
Development and property evaluation of nuclear grade wrought FeCrAl fuel cladding for light water reactors journal December 2015
Some remarks on in-situ studies using TEM-heavy-ion accelerator link from the stand point of extracting radiation damage caused by fast neutrons journal April 2016
An investigation of FeCrAl cladding behavior under normal operating and loss of coolant conditions journal August 2017
Microstructure and mechanical properties of FeCrAl alloys under heavy ion irradiations journal May 2018
Strength and plasticity of amorphous silicon oxycarbide journal April 2019
Microstructural control of FeCrAl alloys using Mo and Nb additions journal October 2017
Interfacial morphology evolution in directionally solidified FeCrAl alloys journal May 2018
Deformation of as-fabricated and helium implanted 100nm-diameter iron nano-pillars journal August 2014
Effect of crystal orientation on the strengthening of iron micro pillars journal January 2015
Plasticity evolution in nanoscale Cu/Nb single-crystal multilayers as revealed by synchrotron X-ray microdiffraction journal May 2015
Impact toughness of commercial and model FeCrAl alloys journal September 2018
Medium energy ion irradiation capability for studies of radiation damage effects over a wide temperature range journal December 2011
Miniaturized single-crystalline fcc metals deformed in tension: New insights in size-dependent plasticity journal August 2009
Plasticity in small-sized metallic systems: Intrinsic versus extrinsic size effect journal August 2011
Contribution to size effect of yield strength from the stochastics of dislocation source lengths in finite samples journal February 2007
Irradiation-enhanced α′ precipitation in model FeCrAl alloys journal April 2016
Critical dimension for the dislocation structure in deformed copper micropillars journal April 2019
Strengthening mechanisms of iron micropillars journal September 2014
BCC single crystal plasticity modeling and its experimental identification journal October 2008
Elastic Constants of Iron from 4.2 to 300°K journal June 1961
Evaluation of Micro-Pillar Compression Tests for Accurate Determination of Elastic-Plastic Constitutive Relations journal September 2012
Sample Dimensions Influence Strength and Crystal Plasticity journal August 2004
Plasticity of Micrometer-Scale Single Crystals in Compression journal August 2009
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments journal June 1992