Amorphous alloy strip with composition gradient and manufacturing method thereof
A composition gradient and amorphous alloy technology, which is applied in the field of manufacturing amorphous nanocrystalline alloy thin strips, can solve the problems of complex manufacturing process, no gradient functional materials, and no C element concentration gradient, so as to achieve low production cost and expand Field of application, large size effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0081] First set the composition to Fe 76 Si 9 B 13 C 2 The alloy is melted in a high-frequency electric furnace. After the melting is completed and the composition is uniform, the molten high-temperature molten steel is sprayed onto the cooling roll rotating at a high speed of 30m / s through a nozzle with a size of 0.4×50mm. The flow rate blows CO gas to the upstream side of the molten pool (see Table 1 for specific process parameters). The CO gas is heated and decomposed around the molten pool, and the following chemical reactions occur:
[0082] 2CO→CO 2 +[C] (1)
[0083] CO → 1 2 O 2 + [ C ] - - - ( 2 )
[0084] The active [C] atoms formed by the decomposition of CO will penetrate into the surface layer of the high-temperature melt after contacting the hi...
Embodiment 2
[0087] This embodiment chooses B 2 h 6 For gas, the specific process parameters are shown in Table 1. When the superalloy melt flows through the nozzle opening with a size of 0.4×50mm to form a molten pool, blow the gas to the downstream of the molten pool with a flow rate of 3L / min. B 2 h 6 When the gas contacts the superalloy melt, it is heated and decomposed into active boron atoms, which are dissolved into the molten steel in the molten pool, and finally form an iron-based amorphous alloy strip with a concentration gradient of B element. The change of B element content along the thickness direction of the iron-based amorphous alloy strip roll surface is as follows: image 3 As shown, it is a diagram of the variation of the composition of the iron-based amorphous alloy strip with B composition gradient along the thickness of the strip. It can be seen that the content of component B on the surface of the amorphous alloy strip is relatively high, and it is close to the eq...
Embodiment 3
[0089] This embodiment chooses NH 3 For gas, the specific process parameters are shown in Table 1. When the superalloy melt flows through the nozzle opening with a size of 0.4×50mm to form a molten pool, the gas is blown upstream of the molten pool with a flow rate of 3L / min. NH 3 When the gas contacts the superalloy melt, it is heated and decomposed into active nitrogen atoms (2NH 3 →3H 2 +2[N]), and dissolve into the molten steel in the molten pool, and finally form an iron-based amorphous alloy strip with a concentration gradient of N element. The change of N element content along the thickness direction of the iron-based amorphous alloy strip roll surface is as follows: Figure 4 As shown, it is a diagram of the change of the composition of the iron-based amorphous alloy strip with N composition gradient along the thickness of the strip. It can be seen that the content of N on the surface of the amorphous alloy strip is relatively high, and it is close to the equilibri...
PUM
| Property | Measurement | Unit |
|---|---|---|
| depth | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More