Which microstructural consequence occurred in early Bronze Age metallurgy from repeated hot forging?

💡 Explanation

When bronze is repeatedly hot forged, grain growth occurs because high temperatures provide atoms with sufficient energy to move across grain boundaries, increasing grain size and reducing ductility. Therefore grain growth and embrittlement result, rather than alternative effects like martensite or carbide precipitation, which don't occur within the typical constitution of early bronze alloys and forging practices, which might refine grain structure depending on precise circumstances, but do not consistently do solely.

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