Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Islands without structure inside metal alloys could lead to tougher materials: These high-entropy alloys could lead to better technologies in transportation, energy and denfense

Proposed hierarchical deformation mechanism paradigm for the equi- atomic CrCoNi-based HEAs subjected to increasing degrees of deformation. Elastic deformation, dislocation-mediated plasticity, twinning-induced plasticity, TRIP, and finally solid-state amorphization. Triggering the next mechanism re- quires the generation of additional defects, i.e., dislocations and/or point defects (vacancies). These multiple mechanisms can interact, leading to a synergy of strengthening processes and a resulting highly complex microstructure.

CREDIT
University of California San Diego
Proposed hierarchical deformation mechanism paradigm for the equi- atomic CrCoNi-based HEAs subjected to increasing degrees of deformation. Elastic deformation, dislocation-mediated plasticity, twinning-induced plasticity, TRIP, and finally solid-state amorphization. Triggering the next mechanism re- quires the generation of additional defects, i.e., dislocations and/or point defects (vacancies). These multiple mechanisms can interact, leading to a synergy of strengthening processes and a resulting highly complex microstructure. CREDIT University of California San Diego

Abstract:
An international team of researchers produced islands of amorphous, non-crystalline material inside a class of new metal alloys known as high-entropy alloys.

Islands without structure inside metal alloys could lead to tougher materials: These high-entropy alloys could lead to better technologies in transportation, energy and denfense

San Diego, CA | Posted on January 29th, 2021

This discovery opens the door to applications in everything from landing gears, to pipelines, to automobiles. The new materials could make these lighter, safer, and more energy efficient.

The team, which includes researchers from the University of California San Diego and Berkeley, as well as Carnegie Mellon University and University of Oxford, details their findings in the Jan. 29 issue of Science Advances.

"These present a bright potential for increased strength and toughness since metallic glasses (amorphous metals) have a strength that is vastly superior to that of crystalline metals and alloys," said Marc Meyers, a professor in the Department of Mechanical and Aerospace Engineering at UC San Diego, and the paper' s corresponding author.

Using transmission electron microscopy, which can identify the arrangement of atoms, the researchers concluded that this amorphization is triggered by extreme deformation at high velocities. It is a new deformation mechanism that can increase the strength and toughness of these high entropy alloys even further.

The research is based on seminal work by Brian Cantor at the University of Oxford, and Jien-Wei Yeh at National Tsing Hua University in Taiwan. In 2004, both researchers led teams that reported the discovery of high-entropy alloys. This triggered a global search for new materials in the same class, driven by numerous potential applications in the transportation, energy, and defense industries.

"Significant new developments and discoveries in metal alloys are quite rare," Meyers said.

###

Amorphization in extreme deformation of the CrMnFeCoNi high-entropy alloy

Shiteng Zhao and Robert O. Ritchie, University of California Berkeley; Zezhou Li, Wen Yang and Marc A. Meyers, University of California San Diego; Chaoyi Zhu, Carnegie Mellon University; Zhouran Zhang, David E. J. Armstrong and Patrick S. Grant, University of Oxford.

####

For more information, please click here

Contacts:
Ioana Patringenaru

619-253-4474

@UCSanDiego

Copyright © University of California, San Diego

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Antibody binding-site conserved across COVID-19 virus variants: The structural revelation could have implications as a therapeutic target in all SARS-CoV-2 variants April 9th, 2021

Discovery could help lengthen lifespan of electronic devices: The research could lead to electronics being designed with better endurance April 9th, 2021

Graphene: Everything under control: Research team demonstrates control mechanism for quantum material April 9th, 2021

Energy transmission by gold nanoparticles coupled to DNA structures April 9th, 2021

Possible Futures

Antibody binding-site conserved across COVID-19 virus variants: The structural revelation could have implications as a therapeutic target in all SARS-CoV-2 variants April 9th, 2021

Discovery could help lengthen lifespan of electronic devices: The research could lead to electronics being designed with better endurance April 9th, 2021

Graphene: Everything under control: Research team demonstrates control mechanism for quantum material April 9th, 2021

Energy transmission by gold nanoparticles coupled to DNA structures April 9th, 2021

Discoveries

Antibody binding-site conserved across COVID-19 virus variants: The structural revelation could have implications as a therapeutic target in all SARS-CoV-2 variants April 9th, 2021

Discovery could help lengthen lifespan of electronic devices: The research could lead to electronics being designed with better endurance April 9th, 2021

Graphene: Everything under control: Research team demonstrates control mechanism for quantum material April 9th, 2021

Energy transmission by gold nanoparticles coupled to DNA structures April 9th, 2021

Materials/Metamaterials

Chile coating and composite industry makes leap forward leveraging graphene nanotube solutions April 9th, 2021

Scientists observe role of cavitation in glass fracturing April 2nd, 2021

DNA--Metal double helix: Single-stranded DNA as supramolecular template for highly organized palladium nanowires March 26th, 2021

Fast-acting, color-changing molecular probe senses when a material is about to fail March 25th, 2021

Announcements

Discovery could help lengthen lifespan of electronic devices: The research could lead to electronics being designed with better endurance April 9th, 2021

Graphene: Everything under control: Research team demonstrates control mechanism for quantum material April 9th, 2021

Energy transmission by gold nanoparticles coupled to DNA structures April 9th, 2021

A new agent for the brain diseases: mRNA April 9th, 2021

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Antibody binding-site conserved across COVID-19 virus variants: The structural revelation could have implications as a therapeutic target in all SARS-CoV-2 variants April 9th, 2021

Discovery could help lengthen lifespan of electronic devices: The research could lead to electronics being designed with better endurance April 9th, 2021

Graphene: Everything under control: Research team demonstrates control mechanism for quantum material April 9th, 2021

Energy transmission by gold nanoparticles coupled to DNA structures April 9th, 2021

Military

Fast-acting, color-changing molecular probe senses when a material is about to fail March 25th, 2021

Building tough 3D nanomaterials with DNA: Columbia Engineers use DNA nanotechnology to create highly resilient synthetic nanoparticle-based materials that can be processed through conventional nanofabrication methods March 19th, 2021

Nanotech scientists create world's smallest origami bird March 17th, 2021

Bioinformatics tool accurately tracks synthetic: DNA Computer scientists show benefits of bioinformatics with PlasmidHawk February 26th, 2021

Energy

Better solutions for making hydrogen may lie just at the surface April 9th, 2021

2D materials for conducting hole currents from grain boundaries in perovskite solar cells April 2nd, 2021

A PTV-based polymer enabled organic solar cells with over 16% efficiency April 2nd, 2021

A general approach to high-efficiency perovskite solar cells April 1st, 2021

Automotive/Transportation

Chile coating and composite industry makes leap forward leveraging graphene nanotube solutions April 9th, 2021

Izon Science launches the Exoid to transform nanoparticle measurement: The semi-automated Exoid device uses new-generation Tunable Resistive Pulse Sensing (TRPS) technology, enabling the measurement of complex nano-particle size, concentration, and charge – with unparalleled prec March 23rd, 2021

A new industry standard for batteries: ultra-clean facility for graphene nanotube dispersions March 19th, 2021

GLOBALFOUNDRIES 22FDX RF Solution Provides the Basis for Next-Gen mmWave Automotive Radar: Next-generation auto radar technology, based on GF’s 22FDX RF solution, will help make vehicles smarter and roads even safer than today March 10th, 2021

Aerospace/Space

Expanding the freedom of design: powder coating on FRP thanks to conductive gelcoats with graphene nanotubes March 3rd, 2021

Starship Takes Flight: High-Altitude Test Flight is a Huge Step Toward National Space Society Goals of Space Settlement December 10th, 2020

The National Space Society Remembers Ben Bova : NSS Mourns the Loss of a Visionary NSS Leader December 2nd, 2020

Russian scientists improve 3D printing technology for aerospace composites using oil waste November 27th, 2020

Research partnerships

TPU scientists offer new plasmon energy-based method to remove CO2 from atmosphere March 19th, 2021

Quantum quirk yields giant magnetic effect, where none should exist: Study opens window into the landscape of extreme topological matter March 1st, 2021

Researchers improve efficiency of next-generation solar cell material: Reducing internal losses could pave the way to low-cost perovskite-based photovoltaics that match silicon cells’ output February 26th, 2021

CEA-Leti & Dolphin Design Report FD-SOI Breakthrough that Boosts Operating Frequency by 450% and Reduces Power Consumption by 30%: Joint Paper Presented at ISSCC 2021 Shows How New Adaptive Back-Biasing Technique Overcomes Integration Limits in Chip Design Flows February 23rd, 2021

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project