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Assessing Strain Rate Sensitivity of Nanotwinned Al–Zr Alloys through Nanoindentation

Journal Article · · Crystals

Nanotwinned metals have exhibited many enhanced physical and mechanical properties. Twin boundaries have recently been introduced into sputtered Al alloys in spite of their high stacking fault energy. These twinned Al alloys possess unique microstructures composed of vertically aligned Σ3(112) incoherent twin boundaries (ITBs) and have demonstrated remarkable mechanical strengths and thermal stability. However, their strain rate sensitivity has not been fully assessed. A modified nanoindentation method has been employed here to accurately determine the strain rate sensitivity of nanotwinned Al–Zr alloys. The hardness of these alloys reaches 4.2 GPa while simultaneously exhibiting an improved strain rate sensitivity. The nanotwinned Al–Zr alloys have shown grain size-dependent strain rate sensitivity, consistent with previous findings in the literature. This work provides insight into a previously unstudied aspect of nanotwinned Al alloys.

Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0016337
OSTI ID:
1923586
Alternate ID(s):
OSTI ID: 2420488
Journal Information:
Crystals, Journal Name: Crystals Journal Issue: 2 Vol. 13; ISSN CRYSBC; ISSN 2073-4352
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Germany
Language:
English

References (75)

Twinning in Nanocrystalline fcc Metals journal February 2005
High-Strength Nanotwinned Al Alloys with 9R Phase journal January 2018
Strain rate effects in the ultrafine grain and nanocrystalline regimes—influence on some constitutive responses journal January 2007
A constitutive description of the deformation of copper based on the use of the mechanical threshold stress as an internal state variable journal January 1988
Microhardness of nanocrystalline palladium and copper produced by inert-gas condensation journal December 1989
A critical review of experimental results and constitutive models for BCC and FCC metals over a wide range of strain rates and temperatures journal January 1999
Structure and properties of amorphous and nanocrystalline NiTi prepared by severe plastic deformation and annealing journal January 2003
Deposition and characterization of TiNi-base thin films by sputtering journal January 2000
Synthesis and tensile property of nanocrystalline metal copper journal January 1999
Nanocrystalline electrodeposited Ni: microstructure and tensile properties journal September 2002
Nanostructured materials: basic concepts and microstructure journal January 2000
Mechanical behavior of nanocrystalline metals and alloys11The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh journal November 2003
Deformation and activation volumes of cryomilled ultrafine-grained aluminum journal August 2004
Nano-sized twins induce high rate sensitivity of flow stress in pure copper journal April 2005
Alloying effects on the stacking fault energy in austenitic stainless steels from first-principles theory journal August 2006
Strength, strain-rate sensitivity and ductility of copper with nanoscale twins journal December 2006
Enhanced strain-rate sensitivity in fcc nanocrystals due to grain-boundary diffusion and sliding journal May 2008
Detwinning mechanisms for growth twins in face-centered cubic metals journal April 2010
High strength, epitaxial nanotwinned Ag films journal January 2011
Twinning dislocation multiplication at a coherent twin boundary journal September 2011
Nanoindentation behavior of nanotwinned Cu: Influence of indenter angle on hardness, strain rate sensitivity and activation volume journal November 2013
The formation mechanisms of growth twins in polycrystalline Al with high stacking fault energy journal December 2015
Texture-directed twin formation propensity in Al with high stacking fault energy journal February 2018
Coupled solute effects enable anomalous high-temperature strength and stability in nanotwinned Al alloys journal November 2020
Columnar grain-driven plasticity and cracking in nanotwinned FCC metals journal June 2021
Ultra-fine-grained and gradient FeCrAl alloys with outstanding work hardening capability journal August 2021
Investigation of strengthening mechanisms in an additively manufactured Haynes 230 alloy journal January 2022
Texture development in Cu-Ag-Fe triphase immiscible nanocomposites with superior thermal stability journal January 2023
Deformation behavior and phase transformation of nanotwinned Al/Ti multilayers journal October 2020
Tribological behaviors of nanotwinned Al alloys journal October 2022
A corrosion study of nanocrystalline copper thin films journal December 2010
Plastic anisotropy and tension-compression asymmetry in nanotwinned Al–Fe alloys: An in-situ micromechanical investigation journal September 2020
High-strength and tunable plasticity in sputtered Al–Cr alloys with multistage phase transformations journal February 2021
Strain rate sensitivity studies on bulk nanocrystalline aluminium by nanoindentation journal February 2014
Manipulating the microstructure and tensile properties of selective laser melted Al–Mg-Sc-Zr alloy through heat treatment journal August 2020
Intensive processing optimization for achieving strong and ductile Al-Mn-Mg-Sc-Zr alloy produced by selective laser melting journal January 2021
Effect of nanocrystalline and ultrafine grain sizes on the strain rate sensitivity and activation volume: fcc versus bcc metals journal September 2004
Strain rate sensitivity of the commercial aluminum alloy AA5182-O journal January 2005
Deformation mechanisms in FCC Co dominated by high-density stacking faults journal October 2018
Directed energy deposition additive manufacturing of a Sc/Zr-modified Al–Mg alloy: Effect of thermal history on microstructural evolution and mechanical properties journal January 2021
Characterization of precipitation in gradient Inconel 718 superalloy journal February 2021
Solute synergy induced thermal stability of high-strength nanotwinned Al-Co-Zr alloys journal January 2023
Hall–Petch relation and boundary strengthening journal October 2004
Strain rate sensitivity of ultrafine-grained aluminium processed by severe plastic deformation journal July 2005
Viscous nature of deformation of ultra-fine grain aluminum processed by equal-channel angular pressing journal May 2006
Hardness and strain rate sensitivity of nanocrystalline Cu journal June 2006
Influence of slip transmission on the migration of incoherent twin boundaries in epitaxial nanotwinned Cu journal January 2011
A new method for reliable determination of strain-rate sensitivity of low-dimensional metallic materials by using nanoindentation journal April 2014
Texture dependent strain rate sensitivity of ultrafine-grained aluminum films journal March 2016
Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase journal April 2018
Thermal stability and deformability of annealed nanotwinned Al/Ti multilayers journal September 2020
Ultrahigh hardness with exceptional thermal stability of a nanocrystalline CoCrFeNiMn high-entropy alloy prepared by inert gas condensation journal October 2020
Mitigating the Hall-Petch breakdown in nanotwinned Cu by amorphous intergranular films journal March 2021
In situ nanoindentation study on plasticity and work hardening in aluminium with incoherent twin boundaries journal September 2014
Ultra-strong nanotwinned Al–Ni solid solution alloys with significant plasticity journal January 2018
Design of super-strong and thermally stable nanotwinned Al alloys via solute synergy journal January 2020
Epitaxial nanotwinned metals and alloys: synthesis-twin structure–property relations journal January 2021
First-principles calculations for understanding microstructures and mechanical properties of co-sputtered Al alloys journal January 2021
Deformation twinning in nanocrystalline copper at room temperature and low strain rate journal January 2004
Epitaxial nanotwinned Cu films with high strength and high conductivity journal August 2008
Nanotwins and stacking faults in high-strength epitaxial Ag/Al multilayer films journal November 2012
Basic criteria for formation of growth twins in high stacking fault energy metals journal October 2013
Exploring the deformation behavior of nanotwinned Al–Zr alloy via in situ compression journal August 2022
The dislocation distribution, flow stress, and stored energy in cold-worked polycrystalline silver journal May 1960
Direct measurements of stacking-fault energies from observations of dislocation nodes journal October 1961
The weak beam technique as applied to the determination of the stacking-fault energy of copper journal December 1971
Microstructural evolution of nanotwinned Al-Zr alloy with significant 9R phase journal November 2020
The Deformation and Ageing of Mild Steel: III Discussion of Results journal September 1951
In situ TEM study of grain growth in nanocrystalline copper thin films journal March 2010
Ultrahigh Strength and High Electrical Conductivity in Copper journal April 2004
Grain Boundary-Mediated Plasticity in Nanocrystalline Nickel journal July 2004
Revealing the Maximum Strength in Nanotwinned Copper journal January 2009
Analysis of the strain-rate sensitivity of flow stresses in nanocrystalline FCC and BCC metals journal December 2007
Structural variations in nanocrystalline nickel films journal January 2002
A Comparative Study of the Nanocrystalline Material Produced by Sliding Wear and Inert Gas Condensation journal January 1990

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