Navigation Links
Cool it, quick: Rapid cooling leads to stronger alloys
Date:7/10/2013

Oxford -- A team of researchers from the University of Rostock in Germany has developed a new way to rapidly produce high strength metallic alloys, at a lower cost using less energy than before. It's expected that this breakthrough will profoundly change how we produce components used in a diverse range of applications; including transport and medical devices.

The research, which appears in the latest issue of the open access journal Materials Today, reports on the first Spark Plasma Sintering (SPS) system with an integrated gas quenching mechanism, capable of alternating the phase compositions and retaining the smallest grain features inside a structured metallic alloy.

SPS is a technique used to fuse fine powders into a dense solid material, by placing powder into a mold (or die) and simultaneously applying pulses of electric current and mechanical pressure to it. By varying SPS cooling rates, it is possible to control the phase and grain sizes in a material, and so, to tune its mechanical properties. In their study, the team of researchers led by Dr. Eberhard Burkel, a Professor of Physics of New Materials, demonstrated that rapidly cooling a material directly after SPS fabrication can produce a material with enhanced hardness, strength and ductility.

The new rapid cooling SPS system is based on a commercially available design, modified to include a series of gas inlet nozzles. After sintering, most SPS systems are left to cool naturally, or are flooded with argon gas. The system blasts nitrogen gas into the chamber at high speeds, rapidly cooling the material.

To demonstrate the utility of the system, Grade 5 Titanium (Ti-6Al-4V) known as the "workhorse" of the titanium industry was produced at different cooling rates. The most-rapidly cooled alloy was found to be up to 12% harder than the naturally-cooled alloy, and with an improved ductility up to 343%. Ti-6Al-4V is the most common titanium alloy in use worldwide, with applications in the aerospace, biomedical and marine industries.

In their article the researchers explain, "This high-ductile alloy offers unprecedented opportunities for the easy manufacturing of complex shapes for biomedical and new engineering applications."

First author of the study, Dr. Faming Zhang, said "The system will play a major role in the production of novel materials, from metals, alloys, metal matrix composites to micro- and nanostructured semiconductors."


'/>"/>

Contact: Stewart Bland
s.bland@elsevier.com
44-186-584-3124
Elsevier
Source:Eurekalert

Related biology news :

1. Recent progress in gene-sensing strategies for rapid detection of foodborne pathogens
2. Hundreds of insect scientists migrating to Rapid City this week
3. Scientists alarmed by rapid spread of Brown Streak Disease in cassava
4. New ACS journal Environmental Science and Technology Letters to rapidly publish urgent research
5. Rapid climate change and the role of the Southern Ocean
6. Mobile LIDAR technology expanding rapidly
7. Psychemedics & TruTouch Announce US Sales/Marketing Distribution Agreement For TruTouch Technologies Rapid Optical Alcohol Detection & Biometric Test
8. Rapid, point-of-care tests for syphilis: The future of diagnosis
9. Imaging biomarker predicts response to rapid antidepressant
10. New study will predict how trees will adapt to rapid climate change
11. Tumors evolve rapidly in a childhood cancer, leaving fewer obvious tumor targets
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... Allen Institute for Cell Science today announces the launch ... dynamic digital window into the human cell. The website ... deep learning to create predictive models of cell organization, ... suite of powerful tools. The Allen Cell Explorer will ... resources created and shared by the Allen Institute for ...
(Date:4/4/2017)...   EyeLock LLC , a leader of iris-based ... Patent and Trademark Office (USPTO) has issued U.S. Patent ... an iris image with a face image acquired in ... 45 th issued patent. "The ... the multi-modal biometric capabilities that have recently come to ...
(Date:3/30/2017)... HONG KONG , March 30, 2017 ... developed a system for three-dimensional (3D) fingerprint identification by adopting ground ... technology into a new realm of speed and accuracy for use ... applications at an affordable cost. ... ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a complex biological network, a depiction of a system of linkages and ... Dmitry Korkin, PhD, associate professor of computer science at Worcester Polytechnic Institute (WPI) ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... Vilnius, Lithuania, announced today that they have entered into a multiyear collaboration to ... provide CRISPR researchers with additional tools for gene editing across all applications. , ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... with the addition of its newest module, US Hemostats & Sealants. , SmartTRAK’s ... hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic sealants used in surgical ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... analysis platform specifically designed for life science researchers to analyze and interpret ... Rosalind Franklin, who made a major contribution to the discovery of the ...
Breaking Biology Technology: