Press Esc to close
Saturday 28 March 2015
News updated at 2:59 AM IST
Weather
Max: 34.5°C
Min : 22.3°C
In Bengaluru
Sunny day

Scientists find new tool to make GenNext materials

Kalyan Ray New Delhi, Nov 19, 2012, DHNS

Discovery can help to examine materials at crystal level

(From left) Rajesh Ganapathy, K Hima Nagamanasa and  A K Sood. Inset: Shreyas Gokhale.

Scientists have developed a new probing tool to study material properties in micro level, which may lead to creation of super-steel or new age copper for a variety of unforeseen applications in the future.

The new tool may lead to important industrial applications by influencing material fabrication strategies. A set of new processing technologies may emerge, thanks to the probe that allows scientists to examine materials at tiny crystal level for steel or copper.

The discovery – made by a team comprising researchers from the Indian Institute of Science and the Jawaharlal Nehru Centre for Advanced Scientific Research – has been reported in the Proceedings of National Academy of Sciences on Tuesday.

“It has significance in material science as it allows playing with the size of a grain in industrial materials such as steel or copper or aluminium. This will improve what is known as grain-boundary engineering,” Ajay Sood, professor of physics at IISc and one of the scientists involved with the research told Deccan Herald.

Steel, copper or aluminium are composed of “poly-crystals”, which are tiny grains of these materials separated by internal boundaries known as grain boundary engineering. From the copper wires that bring electricity to homes to steel-made aircraft, poly-crystals are present everywhere.

Whatever be the application, be it a drilling head or a spool of wire, grain size of poly-crystals is one of the key factors that decides their mechanical, electrical and thermal properties, which in turn will have engineering application. Grain boundary has become a hot area of research.

A better understanding of material at individual grain level and subsequent engineering may lead to creation of advanced materials like super steel for fighter planes or high grade turbine blades, explained Rajesh Ganapthy, a scientist from JNCASR who is also a part of the research group. Even traditional blacksmiths and modern day steel rolling mills do such engineering but without understanding the mechanism.

A blacksmith takes a block of soft iron and shapes it into a hard cutting instrument by repeatedly subjecting the metal to heating-cooling cycles and mechanical stresses by hammering. This on a much larger scale and in a more controlled fashion is routinely done in industries. Both are grain boundary engineering even though little is known about it when these processed were developed and perfected.

While well-established materials engineering protocols are sufficient for conventional applications, further enhancement in the properties of materials is bound to involve developing new fabrication strategies which in turn requires in-depth understanding of grain boundary motion and grain growth when materials are subjected to external stresses, said Ganapathy.

“What we learn is a tip of the iceberg. We can investigate new phenomenon,” he said.


Go to Top

Photo Gallery
An Auto driver seen upset outside theTV showroom as he was watching...

An Auto driver seen upset outside theTV showroom as he was watching...

Angry cricket fans burn the posters of Virat Kohli and Bollywood...

Angry cricket fans burn the posters of Virat Kohli and Bollywood...

Indian cricket fans react as India bats against Australia during their...

Indian cricket fans react as India bats against Australia during their...

Indian supporters wait in the stands following their team's...

Indian supporters wait in the stands following their team's...

India's Virat Kohli (C) and team mates react after Australia won their...

India's Virat Kohli (C) and team mates react after Australia won their...

India's batsmen Umesh Yadav (L) and Mohammed Shami walk off the...

India's batsmen Umesh Yadav (L) and Mohammed Shami walk off the...

Australia's teammates look at India's batsmen Umesh Yadav's face after his...

Australia's teammates look at India's batsmen Umesh Yadav's face after his...

Australian team mates react after they won their Cricket World Cup semi-final...

Australian team mates react after they won their Cricket World Cup semi-final...

Actress and newly appointed AICC National Spokesperson Kushboo...

Actress and newly appointed AICC National Spokesperson Kushboo...

Saina Nehwal at India Open...

Saina Nehwal at India Open...

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523