Science TechnologyTuesday, 4 August 2026·The Hindu - Science
Hiroshima blast debris reveals new alloy, showing nuclear events can create novel materials
Scientists identified a previously unknown alloy in Hiroshima atomic-bomb debris, published in Science Advances on July 29, 2026.
Key highlights
Direct fact
On July 29, 2026, a study in Science Advances reported a previously unknown metal alloy found in hiroshimaites recovered from Hiroshima Bay, formed from the 1945 Hiroshima atomic-bomb blast.
Key specifics
- The alloy was embedded in micrometer-sized metallic grains inside glass-like beads called hiroshimaites.
- The beads were recovered from the beach sands of Hiroshima Bay.
- The alloy contains iron, chromium, nickel, manganese, molybdenum, silicon and aluminium.
- The fireball temperature is estimated to have exceeded 7,000° C during the 1945 blast.
- The researchers said ultrafast quenching created a complex crystal structure impossible under normal conditions.
Exam lens
Question type: Science fact-based MCQ on materials and nuclear events. Key facts: Science Advances, July 29, 2026, Hiroshima Bay, 7,000° C, high-entropy alloys and quasicrystals. TNPSC may ask which journal published the finding or what hiroshimaites are.