Method for evaluating segregation tendency of titanium alloy
Calculation of the equilibrium distribution coefficient K0 of the titanium alloy through directional solidification and EPMA line sweep analysis, solving the problem that it is difficult to judge the segregation tendency of the titanium alloy in advance in the prior art, and achieving semi-quantitative judgment of the segregation tendency of the titanium alloy and improving the quality of the finished product.
CN119715649APending Publication Date: 2025-03-28西部超导材料科技股份有限公司
0 Cites 0 Cited by
Patent Information
- Application Number
- CN202411911584.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The prior art is difficult to judge the segregation tendency of titanium alloys in advance, resulting in a high probability of β spots that may occur during the smelting process of large-scale ingots, affecting the quality of the finished product.
Method used
By preparing titanium alloy ingots, conducting directional solidification and EPMA line sweep analysis, the equilibrium distribution coefficient K0 of easily segregated elements is calculated, and the size of the segregation tendency of the titanium alloy is then judged.
Benefits of technology
Semi-quantitative judgment of the segregation tendency of titanium alloys is achieved, helping to formulate appropriate smelting processes, reducing the probability of β spots, and improving the quality of finished products.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method for evaluating segregation tendency of titanium alloy. The method comprises the following steps: preparing a titanium alloy cast ingot; two titanium alloy bars are cut out from the head end of the cast ingot, and a groove is formed in the top of one titanium alloy bar; the two titanium alloy bars are subjected to directional solidification preparation through a light suspension furnace, and a solid-liquid interface is formed; performing surface treatment on the directional solidification sample; performing low-power corrosion on the sample subjected to surface treatment to find a solid-liquid interface; ePMA line scanning analysis is conducted on the range of 1 mm before and after the solid-liquid interface, and the concentration distribution result of the elements prone to segregation near the solid-liquid interface is obtained; and the equilibrium distribution coefficient K0 of each segregation-prone element is calculated, and then the overall influence of segregation of the segregation-prone elements in the titanium alloy on the microcell phase transformation point is obtained according to the K0. According to the method, the segregation tendency of the titanium alloy can be quantitatively judged in advance, a proper smelting process is formulated for follow-up VAR smelting of large-specification cast ingots, and the probability that beta spots appear on a finished bar due to improper smelting parameters is reduced.
Need to check novelty before this filing date? Find Prior Art