Previously unknown alloy found in Hiroshima blast debris
Researchers discovered a unique metal alloy within glass-like beads formed during the 1945 Hiroshima atomic bombing. The alloy's complex structure suggests that high-energy nuclear events can create materials that are otherwise difficult to synthesize in a laboratory.
Why it matters
The study demonstrates how nuclear debris can serve as a record of extreme physical conditions and potentially lead to the discovery of new, high-strength materials.
Researchers have found a previously unknown metal alloy created by the blast of the Hiroshima atomic bomb in 1945. The material was found inside small, glass-like beads called hiroshimaites, which were recovered from the beach sands of Hiroshima Bay. These beads formed when the intense heat of the blast vaporised building materials, soil, and metals, which solidified as they fell back to the earth.
When the researchers examined the beads, they identified a micrometer-sized metallic grain embedded in the glass. It turned out to be a complex mix of iron, chromium, nickel, manganese, molybdenum, silicon, and aluminium — and it had a unique crystal structure.
The findings were published in Science Advances on July 29.
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