Nanotechnology Now

Our NanoNews Digest Sponsors







Heifer International

Wikipedia Affiliate Button


Home > Press > Researchers provide new insight into how metals fail

Warner
Warner

Abstract:
The eventual failure of metals, such as the aluminum in ships and airplanes, can often be blamed on breaks, or voids, in the material's atomic lattice. They're at first invisible, only microns in size, but once enough of them link up, the metal eventually splits apart.

Researchers provide new insight into how metals fail

Ithaca, NY | Posted on January 23rd, 2012

Cornell engineers, trying to better understand this process, have discovered that nanoscale voids behave differently than the larger ones that are hundreds of thousands of atoms in scale, studied through traditional physics. This insight could lead to improved ability to predict how cracks grow in metals, and how to engineer better materials.

Graduate student Linh Nguyen and Derek Warner, assistant professor of civil and environmental engineering, reported their findings in the journal Physical Review Letters, Jan. 20. Using new atomistic simulation techniques, they concluded that the smallest voids in these materials, those having nanometer dimensions, don't contribute in the same way as microscale voids do in material failure at ordinary room temperatures and pressures.

When metals fail, a physical phenomenon known as plasticity often occurs, permanently deforming, or changing the shape of the material. Previously, it was theorized that both nanometer and microscale voids grow via plasticity as the material fails, but the new research says otherwise.

"While this was something amenable to study with traditional atomistic modeling approaches, the interpretation of previous results was difficult due to a longstanding challenge of time scaling," Warner said. "We've come up with a technique to better address that."

Nguyen and Warner's work is supported by the Office of Naval Research, which has particular interest in the use of aluminum and other lightweight, durable metals in high-performance ship structures.

####

For more information, please click here

Contacts:
Media Contact:
John Carberry
(607) 255-5353


Cornell Chronicle:
Anne Ju
(607) 255-9735

Copyright © Cornell University

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

SEMATECH to Address Critical Supply Chain Challenges and Present Latest Technology Advances at SEMICON West 2013 June 17th, 2013

An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013

Polymer-coated catalyst protects "artificial leaf" June 17th, 2013

Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013

Marine/Watercraft

Improving Energy Storage: Neutron Scattering Technique Provides New Data on Adsorption of Ions in Microporous Materials February 28th, 2013

Southampton scientist develops strongest, lightest glass nanofibres in the world January 10th, 2013

Research and Markets: The Global Nanotechnology and Nanomaterials Industry 2013 Report: Stage of Development, Global Activity and Market Opportunities December 16th, 2012

mPhase to Release Video of New Product October 25th, 2012

Discoveries

Working backward: Computer-aided design of zeolite templates: Rice scientists apply drug-design lessons to production of industrial minerals June 17th, 2013

An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013

Polymer-coated catalyst protects "artificial leaf" June 17th, 2013

Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013

Materials

Working backward: Computer-aided design of zeolite templates: Rice scientists apply drug-design lessons to production of industrial minerals June 17th, 2013

Discover the ‘Nanostructure Advantage’ at ECerS 2013, Booth 5: Innovnano presents nanostructured powders for high performance ceramics June 17th, 2013

Discovery of new material state counterintuitive to laws of physics June 14th, 2013

Ceramics in Paper Manufacturing including Advanced and Nano Materials: Author- Dr. Mahendra Patel, 420 pages; 32 chapters, Publ.2013 June 12th, 2013

Announcements

An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013

Polymer-coated catalyst protects "artificial leaf" June 17th, 2013

Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013

AXEON Acquires Assets of Leading Reverse Osmosis Systems Manufacturer June 17th, 2013

Military

Unzipped nanotubes unlock potential for batteries: Rice University lab combines graphene nanoribbons with tin oxide for improved anodes June 13th, 2013

Polymer structures serve as 'nanoreactors' for nanocrystals with uniform sizes, shapes: Tiny chemistry June 11th, 2013

2-D electronics take a step forward: Rice, Oak Ridge labs make semiconducting films for atom-thick circuits June 10th, 2013

Noble way to low-cost fuel cells, halogenated graphene may replace expensive platinum June 6th, 2013

Aerospace/Space

'Popcorn' particle pathways promise better lithium-ion batteries June 11th, 2013

Space Solar Power: Key to a Livable Planet Earth June 10th, 2013

Researchers enlist Cameca Nanosims Microprobe to determine origins of lunar water: Microprobes's results indicate water on Earth and Moon has similar origin June 4th, 2013

National Space Society Report On Annual Conference June 3rd, 2013

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







  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More












ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project








abbigliamento uomo
Computer Accessories
© Copyright 1999-2013 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE