Category: metallurgy

“In the world of science, change is the only true constant” – Professor Peter J. Uggowitzer

~ Matheus A. Tunes ~ 1 Comment

I recommend all the materialsatextremes.com audience to spend sometime reading this marvelous interview given by Professor Peter Uggowitzer to the AluReport, a publication from AMAG Austria Metall AG! https://alureport.com/issues/issue-02-24/article/the-development-of-scientific-expertise-at-amag-a-success-story Image: Prof. Peter Uggowitzer, Chair of the Scientific Advisory Board of AMAG. Credits: AMAG/AluReport. In this recent interview with AluReport, Prof. Peter Uggowitzer, Chair of the Scientific … Continue reading “In the world of science, change is the only true constant” – Professor Peter J. Uggowitzer

Advancing microreactor materials technology: Next stop, the Moon!

~ Matheus A. Tunes ~ Leave a comment

Miniaturizing nuclear reactors offers a robust solution for generating reliable and efficient electricity, crucial for supporting human missions beyond Earth. Such miniturization is not at all an easy task. I have been pursuing research in this area since 2015, when we designed a ~ 3x3 metre-sized small nuclear reactor core for biological shielding optimization studies. … Continue reading Advancing microreactor materials technology: Next stop, the Moon!

A New Era Beckons: The Epoch of Nanometallurgy

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Casting metallic alloys is a primary human activity since the ancient times. Now, by using advanced methods of electron microscopy coupled with the advent of micro-electromechanical devices (MEMS), Diego Coradini and Professor Stefan Pogatscher led a scientific team to a study that demonstrates the feasibility to cast metallic alloys at the nanoscale. Coradini et al. … Continue reading A New Era Beckons: The Epoch of Nanometallurgy

The influence of He bubble in strengthening of Copper

~ Matheus A. Tunes ~ 1 Comment

It is good to see that scientists are working hard to better evaluate the effect of He bubbles in metals and alloys! Sharing a very interesting new article showing unequivocally the influence of He bubbles in the strengthening behavior of Copper! By using shock loading, Lear et al. discovered that He bubbles totally collapse, leaving … Continue reading The influence of He bubble in strengthening of Copper

Amorphous and Refractory High Entropy Alloys

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In this very interesting new field of research on refractory amorphous high entropy alloys (RAHEA), we present a case where two different RAHEAs have been synthesized and tested under extreme environments: the WTaCrV and WTaCrVHf. We discuss the parameters that may guide the design and application of these interesting alloys in future nuclear reactors and … Continue reading Amorphous and Refractory High Entropy Alloys

Novel high entropy ceramics for extreme environments

~ Matheus A. Tunes ~ 1 Comment

We investigate the radiation response of a hard refractory high entropy carbide (HEC): the (CrNbTaTiW)C. Comparison with the high entropy alloy (HEA) has shown the HEC outperforms the HEA under irradiation. Results suggest high-entropy ceramics can be alternative to HEAs in extreme environments. Available now at Acta Materialia (open access)! Do not forget to see … Continue reading Novel high entropy ceramics for extreme environments

Advancing the field of fine-grained aluminium alloys

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In a new pre-print available at SSRN Electronic Journal, Samberger et al. introduce a new concept for fine-grained aluminium alloys. The authors shows a process of synthesis that resulted in a fine-grained aluminium crossover alloys intended to be applied in high-temperature forming processes. The use of EBSD unravels the active role of T-phase precipitates on … Continue reading Advancing the field of fine-grained aluminium alloys

Using the Plasma FIB as a revolutionary tool for studying radiation effects in solids: cover page award!

~ Matheus A. Tunes ~ 4 Comments

Our recent work entitled "Rethinking radiation effects in materials science using the plasma-focused ion beam" published in the September issue of the historically prestigious Journal of Materials Science (Springer) has been awarded the cover page of the November 2022 issue (volume 57, number 41). A very nice editorial has been written by Professor C. Barry … Continue reading Using the Plasma FIB as a revolutionary tool for studying radiation effects in solids: cover page award!

Nanocrystalline lightweight alloys for space exploration

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We continue in our saga aiming at finding better radiation-resistant materials for applications in the extreme environment of the solar system. I am delighted to introduce you our new paper that was led by Patrick Willenshofer (another genius from Montanuniversitaet Leoben). In this paper, we introduce a revolutionary nanocrystalline crossover aluminium alloy that scored the … Continue reading Nanocrystalline lightweight alloys for space exploration