Blisters on 6061 forgings after T6 treatment. Hydrogen gas inside blisters. H came from moisture which came from forging lubricant. 鍛造液濕氣與鋁在高溫下起化學反應生氫. 氫躦入鋁中後聚集成氫氣泡.
上2張: 水皰磨開後 下: 水皰磨開前
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Blisters on 6061 forgings after T6 treatment. Hydrogen gas inside blisters. H came from moisture which came from forging lubricant. 鍛造液濕氣與鋁在高溫下起化學反應生氫. 氫躦入鋁中後聚集成氫氣泡.
上2張: 水皰磨開後 下: 水皰磨開前
是否因為時效溫度較高或環境水氣濃度高,導致H易溶入鍛件而最後從材料表面脹開呢