A kind of deformed superalloy containing zr-ce and preparation method thereof

A technology for deforming superalloys and alloys, which is applied in the field of superalloy smelting, and can solve the problems of unreasonable and accurate control of Zr smelting process, element burning loss, complex control of Zr and Ce elements, etc.
CN112458326BActive Publication Date: 2021-04-16UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2021-04-16

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Abstract

The invention relates to a deformed superalloy containing Zr-Ce and a preparation method thereof. The method: prepare the raw materials; carry out vacuum induction smelting on the raw materials according to chemical material, refining and pouring in sequence: in the refining period, pre-add a small amount of zirconium and cerium to continue refining for 10 ~ 15 minutes, and detect the burning loss of zirconium and cerium; then add the remaining zirconium and cerium and the burned zirconium and cerium to continue refining for 10~15 minutes; during the pouring period, pour the refined alloy melt to obtain a vacuum induction ingot Carry out electroslag remelting to the vacuum induction ingot to obtain a deformed superalloy containing Zr-Ce; the slag material used in the electroslag remelting contains CaF 2 , CaO, Al 2 O 3 、TiO 2 , ZrO 2 and CeO 2 . The invention can be used to accurately control the contents of Zr and Ce elements in the alloy, and improve the purity of the alloy and the uniformity of element distribution.
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Description

technical field

[0001] The invention belongs to the technical field of superalloy smelting, and in particular relates to a deformed superalloy containing Zr-Ce and a preparation method thereof. Background technique

[0002] Adding trace elements of Zr (zirconium) and Ce (cerium) to the deformed superalloy can significantly improve the durability of the alloy. The element Zr is segregated at the grain boundary to reduce grain boundary defects, increase grain boundary binding force, and reduce grain boundary diffusion rate, thereby slowing down dislocation climbing and strengthening grain boundaries. As a scavenger, Ce has the functions of deoxidation and desulfurization, and reduces the harmful effects of oxygen and sulfur on the grain boundary. In addition, Ce can improve the oxidation resistance of the alloy and increase the surface activity. However, too much Zr will increase the formation of harmful phases such as Lavese in the alloy, and too much Ce will also deteriorat...

Claims

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