遠心鋳造における多合金系白鋳鉄のMC炭化物の偏析に及ぼすニオブ含有量の影響
書誌事項
- タイトル別名
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- Effects of Niobium Content on MC Carbide Segregation in Multi-component White Cast Iron by Centrifugal Casting
説明
<p> Multi-component white cast iron containing Cr, Mo, W, V has excellent abrasive wear resistance due to the MC carbide with high hardness. In the centrifugal casting, since the MC carbide formed by V has a lower specific gravity than that of molten metal, there is a tendency to segregate itself toward the inside because of the centrifugal force. As a measure to solve this problem, it has been proposed to add Nb which forms the same type of MC carbide with a high specific gravity and to suppress the segregation by making the composite M (V, Nb) C carbide crystallize. In this research, the effect of Nb content on the degree of segregation was investigated. In the hyper-eutectic region, Nb with a higher specific gravity was enriched outward by the centrifugal force. In the hypo-eutectic region, a simultaneous enrichment of Nb and V was observed near the inner surface. Although the effective range of Nb content must be limited, the possibility to reduce the segregation by Nb-addition was confirmed.</p>
収録刊行物
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- 鋳造工学
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鋳造工学 96 (2), 62-67, 2024-02-25
公益社団法人 日本鋳造工学会
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詳細情報 詳細情報について
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- CRID
- 1390299318867717376
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- ISSN
- 21855374
- 13420429
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可