Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > Nanobubbles cause metal fatigue

May 15th, 2005

Nanobubbles cause metal fatigue

Abstract:
Metals with nanoscale grain sizes can be stronger than ordinary metals, but they may also be highly susceptible to fatigue: the gradual growth of cracks under repeated cycles of stress and release. Computer simulations of the atomic-scale processes involved in the cracking of a nanocrystalline metal have now helped to clarify the reasons for this Achilles' heel.

The key problem that Diana Farkas and her colleagues at Virginia Polytechnic Institute and State University in Blacksburg have overcome in conducting their investigation is how to bridge the different scales at which the issue of cracking must be considered. Although the basic process by which a crack propagates through a metal involves sliding of individual planes of atoms in the crystalline material, the big picture becomes apparent only when one draws back to the scale of many tens of nanometres which encompasses enormous numbers of atoms.

Source:
* Nature

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Virginia Polytechnic Institute

Related News Press

Materials/Metamaterials

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Coexistence of superconductivity and charge density waves observed June 23rd, 2016

GraphExeter illuminates bright new future for flexible lighting devices June 23rd, 2016

Soft decoupling of organic molecules on metal June 23rd, 2016

Announcements

Radiation-guided nanoparticles zero in on metastatic cancer July 1st, 2016

Synthesized microporous 3-D graphene-like carbons: IBS research team create carbon synthesis using zeolites as a template July 1st, 2016

No need in supercomputers: Russian scientists suggest a PC to solve complex problems tens of times faster than with massive supercomputers June 30th, 2016

Surprising qualities of insulator ring surfaces: Surface phenomena in ring-shaped topological insulators are just as controllable as those in spheres made of the same material June 30th, 2016

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







Car Brands
Buy website traffic