Study on Inner Crack Healing at Elevated Temperature in Metals
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摘要: 給出對純銅和45號及80號優質碳素鋼內部裂紋高溫愈合處理的一些實驗結果.研究表明:內部裂紋愈合過程中存在比較強烈的原子擴散遷移行為,鋼中Fe原子更易于向裂紋愈合區擴散遷移;較長裂紋段的愈合可能依賴于一種分隔愈合機制.Abstract: The results of research on the healing in pure copper and carbon steel are shown herewith. The inner crack could be healed at elevated temperature. It suggests that the healing of long crack could depend on the "separate healing" mechanism, in which forming of partition is an haportant stage. It results in that the long crack transformed into a row of tiny smooth cracks and round holes. The diffusivity of Fe atoms to crack healing area is higher than other elements.
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Key words:
- metal /
- inner crack /
- healing
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