金属学报  1981, Vol. 17 Issue (1): 50-57

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高钛低铝高温合金电渣重熔中钛烧损的研究

陈崇禧;王涌;傅杰;陈恩普

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

A STUDY ON THE TITANIUM LOSS DURING ELECTROSLAG REMELTING HIGH TITANIUM AND LOW ALUMINUM CONTENT SUPERALLOY

Chen Chongxi; Wang Yong; Fu Jie and Chen Enpu (Beijing University of Iron and Steel Technology)

陈崇禧;王涌;傅杰;陈恩普. 高钛低铝高温合金电渣重熔中钛烧损的研究[J]. 金属学报, 1981, 17(1): 50-57.
, , , . A STUDY ON THE TITANIUM LOSS DURING ELECTROSLAG REMELTING HIGH TITANIUM AND LOW ALUMINUM CONTENT SUPERALLOY[J]. Acta Metall Sin, 1981, 17(1): 50-57.

摘要 参考文献 相关文章 Metrics 全文: PDF(580 KB)   摘要: 研究A286和V57合金电渣重熔过程中钛烧损时,发现渣中TiO_2浓度较高时,TiO_2是钛烧损的主要氧化剂。与合金中的钛相平衡的渣中低价钛氧化物主要是Ti_3O_5.决定钛烧损速率的主要因素是Ti~(4+)在钢/渣界面层的传质速度。传质速度随渣中TiO_2浓度的增加而增大。降低Ti~(3+)向渣/气界面的扩散速度是减少合金中钛烧损的关键。研究了CaF_2-Al_2O_3-TiO_2渣系中Ti~(4+)在电极/熔渣和金属熔池/熔渣界面在1700±10℃的传质系数与渣中TiO_2含量的关系,测定了Ti~(3+)向渣/气界面的传质系数为2.2×10~(-1)cm/s(1500℃)。 Abstract：The titanium loss during electroslag remelting superalloys A286 and V57 has been studied. It was shown that TiO_2 becomes the predominant oxidant causing the titanium loss of the superalloys when the concentration of TiO_2 in slag used is higher enough, and that the oxide of lower valence titanium which may be kept in eqilibrium with titanium in molten superalloy seems mainly to be Ti_3O_5. The controlling factor for the rate of titanium loss may be the speed of mass transfer of Ti~(4+) across metal/slag interface which increases with the increase of concentration of TiO_2 in the slag. Thus, the remedy for its titanium loss will be dependent upon reducing Ti~(3+) diffusion rate toward slag/atmosphere interface. Attempt has also been made on the correlation between TiO_2 concentration in the slag and the mass transfer coefficient of Ti~(4+) in CaF_2-Al_2O_3-TiO_2 slag system across either electrode/slag or metal pool/slag interfaces at 17004±10℃. The mass transfer coefficient of Ti~(4+) may be expressed as:k_(e/s)=6.59exp(-0.078TiO_2), 10~(-2)cm/sk_(p/s)=2.84exp(-0.079TiO_2), 10~(-2)cm/s The mass transfer coefficient of Ti~(3+) toward slag/atmosphere interface was measured, i.e. 2.2×10~(-1) cm/s at 1500℃. 收稿日期: 1981-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 陈崇禧 王涌 傅杰 陈恩普 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1981/V17/I1/50 [1] Elienne, M. and Mitchell, A., Oxidation Losses of Low Levels of Titanium During Electroslag Remelting,Second International Symposium on Electroslag Remelting Technology Proceedings Part Ⅱ,Pittsburgh,Mellon Institute,1969, ed. by G. K. Bhat. [2] Knights, C. F. and Perkins, R., Electroslag Refining, London, 1973, Iron and Steel Institute, p.35． [3] Gill, L. L. and Harris, K., Electroslag Refining, London, 1973, Iron and Steel Institute, p.89． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed