In-situ observation of manganese sulfide inclusions in YF45MnV steel
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摘要: 采用共焦激光掃描顯微鏡首次原位觀察YF45MnV鋼中MnS夾雜在連續升溫過程中的變化.結果表明:在勻速加熱過程中,細長條狀MnS首先轉變為近球狀硫化物組成的串狀夾雜物,然后近球狀硫化物發生擴散長大,數量減少;溫度增加到一定程度后,MnS夾雜發生固溶現象,其面積反而減小.Abstract: The change process of MnS inclusions in YF45MnV steel was in-situ observed by confocal laser scanning microscope. The result shows that during the continuous heating process, slender MnS inclusions firstly change into string-like inclusions composed of subsphaeroidal sulfides, then these subsphaeroidal sulfides diffuse and grow up with the number decreasing. When the temperature increases to some extent, MnS inclusions dissolve to the steel and the areas of corresponding sulfides decrease.
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Key words:
- free-cutting steel /
- MnS inclusions /
- size /
- diffusion /
- dissolution
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