Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




TECH SPACE
New Technique Creates Stronger, Lightweight Magnesium Alloys
by Staff Writers
Raleigh NC (SPX) Mar 14, 2013


Nano-spaced stacking faults are parallel fault-lines in the structure of the alloy that increase the strength of the material.

Researchers from North Carolina State University have developed a new technique for creating stronger, lightweight magnesium alloys that have potential structural applications in the automobile and aerospace industries.

Engineers constantly seek strong, lightweight materials for use in cars and planes to improve fuel efficiency. Their goal is to develop structural materials with a high "specific strength," which is defined as a material's strength divided by its density. In other words, specific strength measures how much load it can carry per unit of weight.

Researchers at NC State focused on magnesium alloys because magnesium is very light; on its own, though, it isn't very strong. In the study, however, the researchers were able to strengthen the material by introducing "nano-spaced stacking faults."

These are essentially a series of parallel fault-lines in the crystalline structure of the alloy that isolate any defects in that structure. This increases the overall strength of the material by approximately 200 percent.

"This material is not as strong as steel, but it is so much lighter that its specific strength is actually much higher," says Dr. Suveen Mathaudhu, a co-author of a paper on the research and an adjunct assistant professor of materials science and engineering at NC State under the U.S. Army Research Office's Staff Research Program.

"In theory, you could use twice as much of the magnesium alloy and still be half the weight of steel. This has real potential for replacing steel or other materials in some applications, particularly in the transportation industry - such as the framework or panels of vehicles."

The researchers were able to introduce the nano-spaced stacking faults to the alloy using conventional "hot rolling" technology that is widely used by industry.

"We selected an alloy of magnesium, gadolinium, yttrium, silver and zirconium because we thought we could introduce the faults to that specific alloy using hot rolling," says Dr. Yuntian Zhu, a professor of materials science and engineering at NC State and co-author of the paper. "And we were proven right."

"Because we used existing technology, industry could adopt this technique quickly and without investing in new infrastructure," Mathaudhu says.

"Ultrastrong Mg-Alloy via Nano-Spaced Stacking Faults"; W. W. Jian, G. M. Cheng, W. Z. Xu, H. Yuan, M. H. Tsai, C. C. Koch, Y. T. Zhu and S. N. Mathaudhu, North Carolina State University; Q. D. Wang, Shangai Jiaotong University. Published: Online March 12, 2013 in Materials Research Letters.

.


Related Links
North Carolina State University
Space Technology News - Applications and Research






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





TECH SPACE
Novel technique for chemical identification at the nanometer scale developed
Urbana IL (SPX) Mar 14, 2013
For more than 20 years, researchers have been using atomic force microscopy (AFM) to measure and characterize materials at the nanometer scale. However AFM-based measurements of chemistry and chemical properties of materials were generally not possible, until now. Researchers at the University Illinois report that they have measured the chemical properties of polymer nanostructures as smal ... read more


TECH SPACE
Lunar Orbiter Image Recovery Project Seeks Public Support To Retrieve Apollo Era Moon Images

China sets moon mission re-entry test

Lunar impacts created seas of molten rock

China to use modified rocket for moon landing mission

TECH SPACE
Maryland explores adaptations strategies for survival on Mars

NASA rover finds conditions once suited to life on Mars

Curiosity Rover's Recovery Moving Forward

NASA Rover Finds Conditions Once Suited for Ancient Life on Mars

TECH SPACE
Technology to detect Alzheimer's takes SXSW prize

Basketball legend Shaq talks tech at SXSW

UK and Kazakhstan agree collaboration in space

Wyle To Provide NASA Ongoing Support For Human Space Flight

TECH SPACE
China's fourth space launch center to be in use in two years

China to launch new manned spacecraft

Woman expected again to join next China crew roster

China's space station will be energy-efficient

TECH SPACE
Canadian commands space station for first time

'Goody Bag' Filled With Sample Processing Supplies Arrives on Station

ESA's Columbus Biolab Facility

SpaceX set for third mission to space station

TECH SPACE
Vega receives its upper stage as the next mission's two primary passengers land in French Guiana

Grasshopper Successfully Completes 80M Hover Slam

Musk: 'I'd like to die on Mars'

Ariane 5 vehicle for next ATV resupply mission in Kourou

TECH SPACE
The Great Exoplanet Debate

Earth-sized planets in habitable zones are more common than previously thought

Astronomers Observe Planets Around Another Star Like Never Before

Astronomers Conduct First Remote Reconnaissance of Another Solar System

TECH SPACE
Breaking the final barrier: room-temperature electrically powered nanolasers

New Technique Creates Stronger, Lightweight Magnesium Alloys

Novel technique for chemical identification at the nanometer scale developed

Aspirin may lower melanoma risk




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement