厚板坯氣泡形貌、分布及攜帶夾雜物的原位分析

李向龍; 李寶寬; 劉中秋; 牛冉; 劉強; 任能; 徐國棟; 阮曉明

doi:10.13374/j.issn2095-9389.2018.s1.026

厚板坯氣泡形貌、分布及攜帶夾雜物的原位分析

doi: 10.13374/j.issn2095-9389.2018.s1.026

1. 東北大學冶金學院;
2. 寶山鋼鐵股份有限公司

基金項目:

國家自然科學基金資助項目 (51574068, 51604070)

詳細信息

通訊作者:
李寶寬, E-mail:libk@smm.neu.edu.cn

中圖分類號: TF777
計量
- 文章訪問數: 32
- HTML全文瀏覽量: 11
- PDF下載量: 0
- 被引次數: 0
出版歷程
- 收稿日期: 2018-05-08
- 網絡出版日期: 2023-07-18

In-situ analysis on morphology,distribution and entrapped inclusions of bubbles in thick slab

1. School of Metallurgy,Northeastern University;
2. Baoshan Iron & Steel Co.,Ltd.

摘要

摘要: 對管線鋼X70厚板坯進行分層刨削, 并對厚板坯內氣泡尺寸、形貌及其攜帶夾雜物的情況進行原位分析.結果表明, 厚板坯內約94%的氣泡直徑在200μm以下;厚板坯皮下8 mm范圍內氣泡及其攜帶的夾雜物缺陷較多, 繼續深入刨層, 基本上難以發現明顯的氣泡及其攜帶的夾雜物, 只在個別位置發現了少許氣泡, 且表現出了一定的偶然性;氣泡形態以單個氣泡和孿生氣泡為主, 還有少許葫蘆形氣泡以及“四瓣”形氣泡;發現了四種夾雜物的存在形式:氧化物、團簇狀夾雜物、氣泡群夾雜物以及夾灰.
- 厚板坯 /
- 氣泡 /
- 夾雜物 /
- 原位分析
Abstract: The morphology, distribution, and entrapped inclusions of bubbles in thick slab of X70 pipeline steels were investigated by peeling layer.The results show that the diameters of 94%bubbles in thick slab are less than 200μm;the bubbles and the entrapped inclusions are common in 8 mm depth from the slab surface, but the defects are hardly found as peeling deeper into the middle of slab, only a small number of defects are shown, presenting a random distribution in this area;the main morphology of bubbles existing in slab are single bubbles and twin bubbles, the calabash bubbles and petal bubbles are also found;the inclusions are mainly in four existent forms:oxides, aggregation in clusters, bubbles in clusters, and ash inclusions.
- thick slab /
- bubbles /
- inclusions /
- in-situ analysis

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參考文獻(15)

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