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:
| Related Links |
Virginia Polytechnic Institute
| Related News Press |
Materials/Metamaterials/Magnetoresistance
First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025
Researchers unveil a groundbreaking clay-based solution to capture carbon dioxide and combat climate change June 6th, 2025
A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025
Institute for Nanoscience hosts annual proposal planning meeting May 16th, 2025
Announcements
Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025
Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025
Japan launches fully domestically produced quantum computer: Expo visitors to experience quantum computing firsthand August 8th, 2025
ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||