The Hiroshima Atomic Blast Forged a Metal Never Seen Before on Earth

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The Hiroshima Atomic Blast Forged a Metal Never Seen Before on Earth

https://www.sciencealert.com/the-hiroshima-atomic-blast-forged-a-metal-never-seen-before-on-earth

[Core Content]

Geologists led by the University of Florence have identified a previously unknown iron-chromium alloy within microscopic fallout debris from the 1945 Hiroshima atomic bombing. The 10-micrometer grain exhibits a complex, highly ordered cubic crystal structure that formed due to the extreme temperatures and rapid cooling rates of the nuclear fireball.

This discovery highlights that nuclear blast debris contains a unique library of metastable materials that are difficult to replicate in laboratory settings. For the nuclear industry, these findings demonstrate that fallout particles serve as a physical record of extreme thermal events, potentially offering new insights into material behavior under rapid, high-energy phase transitions.

The world changed forever on 6 August 1945.

That was the day humanity first deliberately turned the most powerful weapon ever conceived upon itself – when the US unleashed an atomic bomb on the people of Hiroshima in Japan.

In seconds, the fireball reached temperatures above 7,000 °C (~12,600 °F), vaporizing flesh and metal alike.

And, as materials cooled in its terrible wake, something humanity had never seen before formed in the ashes.

Read the full article at ScienceAlert:
https://www.sciencealert.com/the-hiroshima-atomic-blast-forged-a-metal-never-seen-before-on-earth