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Title: Towards strength–ductility synergy through the design of heterogeneous nanostructures in metals

Journal Article · · Materials Today
 [1];  [2]
  1. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Materials Science and Engineering
  2. Georgia Inst. of Technology, Atlanta, GA (United States). Woodruff School of Mechanical Engineering

Metals can be processed to reach ultra-high strength, but usually at a drastic loss of ductility. Here, we review recent advances in overcoming this tradeoff, by purposely deploying heterogeneous nanostructures in an otherwise single-phase metal. Several structural designs are being explored, including bimodal, harmonic, lamellar, gradient, domain-dispersed, and hierarchical nanostructures. These seemingly distinct tactics share a unifying design principle in that the intentional structural heterogeneities induce non-homogeneous plastic deformation, and the nanometer-scale features dictate steep strain gradients, thereby enhancing strain hardening and consequently uniform tensile ductility at high flow stresses. Moreover, these heterogeneous nanostructures in metals play a role similar to multiple phases in complex alloys, functionally graded materials and composites, sharing common material design and mechanics principles. Our review advocates this broad vision to help guide future innovations towards a synergy between high strength and high ductility, through highlighting several recent designs as well as identifying outstanding challenges and opportunities.

Research Organization:
Johns Hopkins Univ., Baltimore, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-03ER46056
OSTI ID:
1532880
Journal Information:
Materials Today, Vol. 20, Issue 6; ISSN 1369-7021
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 550 works
Citation information provided by
Web of Science

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Cited By (36)

Additional hardening in harmonic structured materials by strain partitioning and back stress journal February 2018
Microstructural evolution and mechanical properties of a 5052 Al alloy with gradient structures journal August 2017
Nanostructuring with Structural-Compositional Dual Heterogeneities Enhances Strength-Ductility Synergy in Eutectic High Entropy Alloy journal August 2019
Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy text January 2018
Heterogeneous materials: a new class of materials with unprecedented mechanical properties journal June 2017
Eliminating deformation incompatibility in composites by gradient nanolayer architectures journal November 2018
Enhanced strength–ductility synergy in ultrafine-grained eutectic high-entropy alloys by inheriting microstructural lamellae journal January 2019
Strong and ductile AZ31 Mg alloy with a layered bimodal structure journal April 2019
Microscale residual stresses in additively manufactured stainless steel journal September 2019
Effect of graphite additives on solid-state reactions in eutectic Al–Cu powder mixtures during high-energy ball milling journal June 2019
Dynamically reinforced heterogeneous grain structure prolongs ductility in a medium-entropy alloy with gigapascal yield strength journal June 2018
Critical Assesment 37: Harmonic-structure materials - idea, status and perspectives journal January 2020
Microstructure and Mechanical Properties of Austenitic Stainless Steels after Dynamic and Post-Dynamic Recrystallization Treatment journal February 2018
A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals journal May 2019
Strengthening mechanisms of Al wires processed by equal channel angular torsion drawing journal November 2019
In-situ observation of dislocation dynamics near heterostructured interfaces journal May 2019
Improvement of mechanical properties of extruded AZX912 magnesium alloy using high-temperature solution treatment journal October 2019
Experimental study on the effects of preheating time and temperature of hot press process on the mechanical and metallurgical properties of AZ91C alloy sheet journal February 2019
Crystal plasticity modeling the deformation in nanodomained heterogenous structures journal March 2019
Extraordinary tensile properties of titanium alloy with heterogeneous phase-distribution based on hetero-deformation induced hardening text January 2020
Mechanical Properties and Microstructures of Commercial‐Purity Aluminum Processed by Rotational Accelerated Shot Peening Plus Cold Rolling journal August 2019
Extraordinary strength-ductility synergy in a heterogeneous-structured β -Ti alloy through microstructural optimization journal August 2019
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Superior strength and ductility of 316L stainless steel with heterogeneous lamella structure journal April 2018
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Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy text January 2018
Extraordinary strength-ductility synergy in a heterogeneous-structured β -Ti alloy through microstructural optimization text January 2019
Extraordinary tensile properties of titanium alloy with heterogeneous phase-distribution based on hetero-deformation induced hardening text January 2020
Ductility by shear band delocalization in the nano-layer of gradient structure text January 2018
Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy journal October 2018
Extraordinary strength-ductility synergy in a heterogeneous-structured β -Ti alloy through microstructural optimization text January 2019

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