Yttrium-ferrous alloy and preparation method thereof

Abstract

The invention discloses a yttrium-ferrous alloy, which is prepared from the following components in percent by weight: 0 to 95 percent of yttrium, and the balance ferrous and inevitable impurities with the total amount being less than 0.5 percent, wherein oxygen is less than or equal to 0.01 percent by weight, carbon is less than or equal to 0.01 percent by weight, phosphorus is less than or equal to 0.01 percent by weight, and sulfur is less than or equal to 0.005 percent by weight. The invention further discloses a preparation method of the yttrium-ferrous alloy. The yttrium-ferrous alloy prepared through the invention is uniform in component, small in segregation, low in impurity content, high in rare earth yield, low in cost and free of pollution, is high in rare earth yield and remarkable in effect when being applied in rare earth steel, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a rare earth metal material, in particular to a yttrium-iron alloy and a preparation method thereof. Background technique [0002] At present, steel is the largest metal structural material and is widely used in construction, energy, transportation, aerospace and other fields. The application and research of rare earths in steel have also developed rapidly. The addition of rare earths to molten steel can desulfurize, deoxidize, change the shape of inclusions, etc., and can improve the plasticity, stamping performance, wear resistance and welding performance of steel. Various rare earth steels such as rare earth steel plates for automobiles, die steels, rails, etc. have been widely used. [0003] The addition method of rare earth in the production process of rare earth steel has always been the focus of scientific research. The existing addition methods include wire feeding method, cored wire, rare earth iron intermediate alloy...

AI Technical Summary

Problems solved by technology

This method is the method commonly used at present, and its process technology is simple, can make multi-element master alloy or application alloy, but also has deficiency: 1) rare earth metal easily local concentration is too high in molten iron, produces segregation; 2) this method The raw materials used are rare earth metals, especially for medium and heavy rare earth metals, the preparation process is complicated and the cost is high; 3) The melting temperature is relatively high. Since rare earth metals and pure iron are used as raw materials, the melting temperature requirements are high

This method has low production cost and simple process, but it also has the following defects: the distribution of rare earth and iron in the alloy fluctuates greatly, it is difficult to control, and the distribution error is as high as 3%-5%, which affects product consistency

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