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| EFFECT OF SLAG COMPOSITION ON Mg, Al OR Ti CONTENT IN Ni-BASE SUPERALLOY DURING ESR |
| CHEN Chongxi; GAO Rongfu; ZHAO Wenxiang (Beijing University of Iron and Steel Technology) (Manuscript received 14 January; 1983) |
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Cite this article:
CHEN Chongxi; GAO Rongfu; ZHAO Wenxiang (Beijing University of Iron and Steel Technology) (Manuscript received 14 January; 1983). EFFECT OF SLAG COMPOSITION ON Mg, Al OR Ti CONTENT IN Ni-BASE SUPERALLOY DURING ESR. Acta Metall Sin, 1984, 20(3): 243-251.
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Abstract The effect of the composition of slag system CaF_2-MgO-Al_2O_3-CaO-0.5 mol % TiO_2 on the contents of Mg, Al and Ti in Ni-base superalloy during ESR has been investigated. In the mole concentration range of the slag: 0.10≤N_(MgO)≤0.25, 0.05≤N_(Al_2O_3)≤0.21 and 0.05≤N_(CaO)≤0.15, and at temperature of the slag pool about 1690±10℃, the wt-% elementary content in the superalloy after ESR may satisfy the following functions: [Mg]=0.881[Al]_0~(0.641)N_(MgO)~(4.114-2.835N_(CaO)+1.077lnN_(Al_2O_3))N_(Al_2O_3)~(1.282) [Al]=[Al]_0-(0.19+0.804N_(CaO)~(0.454)-1.70N_(Al_2O_3))vA/45.36V v=0.148+0.479N_(Al_2O_3)+0.348N_(MgO)-0.378N_(CaO) where [Al]_0 is the Al content in the electrode; A is the area in cm~2 of the metal pool/slag interface and v or V is the mett rate in kg/min of this study or others respectively. [Ti] increases slightly with the increase of N_(CaO) and without relevance to the variation of N_(MgO) or N_(Al_2O_3).
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Received: 18 March 1984
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2 Debarbadillo, J. J., Superalloys: Metallurgy and Manufacture, Proc. of the 3rd Int. Symp. Seven Springs, PA., Eds. Kear, B. H.; Muzyka, D. R.; Tien, J. K., et al., Claitor's Publ. Div. Baton Rouge, LA., 1976, p. 95．
3 陈崇禧;赵文祥,金属学报,19(1983) ,A1．7 |
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