Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Dense high performance low alloy PM steels

14.10.2005


Miren Sarasola, Bachelor of Physics Science and researcher of the Materials Department at CEIT, has developed dense high performance low alloy PM steels by liquid phase sintering. The Thesis title is : "Development of dense high performance low alloy PM steels by liquid phase sintering".



The master alloy concept as a mean for obtaining high density low alloyed PM steels was revisited. In a first instance, several master alloys previously reported in the literature, were reproduced in order to carry out experimental sintering trials with the aim of understanding the behaviour of these master alloys, mixed in predetermined proportions, with a selection of Fe-based powders. As a secondary objective the accuracy of theoretical predictions based on ThermoCalc calculations was compared against the reported experimental data. A conjunction of this information with additional experiments tending to determine the diffusion paths and rates of a diversity of elements in multicomponent Fe-based systems was used for identifying adequate alloy additions supported by a computer aided alloy design approach.

On these bases, several mater alloys have been specifically designed, under metallurgic and thermodinamic criterion, to provide the formation of wetting liquid phases at low temperature and also, attractive mechanical properties of the steels. The as-sintered density and properties of the alloys is determined by the amount and type of master alloy used, total carbon content, the sintering temperature and time. The performance of the master alloys during sintering is shown for several commercially available Fe-based powders. The microstructural development of the steels is determined, both, by the chemical composition of the Fe-based powder and the chemical reactions taking place between the Fe and the master alloy particles during high temperature sintering. The influence of alloying and the sintering conditions on the final microstructure, density and mechanical properties is also discussed.


The thesis has been given the Schunk Materials Prize 2005 because the work in the field of sintered metal technology has distinguished itself by its scientific significance.

Irati Kortabitarte | alfa
Further information:
http://www.basqueresearch.com

More articles from Physics and Astronomy:

nachricht Tune your radio: galaxies sing while forming stars
21.02.2017 | Max-Planck-Institut für Radioastronomie

nachricht Breakthrough with a chain of gold atoms
17.02.2017 | Universität Konstanz

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Impacts of mass coral die-off on Indian Ocean reefs revealed

21.02.2017 | Earth Sciences

Novel breast tomosynthesis technique reduces screening recall rate

21.02.2017 | Medical Engineering

Use your Voice – and Smart Homes will “LISTEN”

21.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>