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Preparation method of Haynes 214 alloy strip foil

A technology of alloy strips and foils, which is applied in the field of preparation of Haynes214 alloy strips and foils, can solve the problems of unsystematic research on strip and foil forming methods, poor structure uniformity, and inability to prepare parts, so as to avoid uneven deformation and the method is simple , Good uniformity and consistency

Active Publication Date: 2022-07-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) The research on the forming method of strip foil is not systematic and the quality is not stable:
For example, the amount of deformation in each pass must be controlled to a certain extent to obtain a completely recrystallized structure, but excessive deformation will cause strip hardening, performance exceeding the standard or cracking, and deterioration of processability
In addition, due to the high dimensional accuracy, surface quality, and uniformity of the structure and performance of the aviation tape and foil, even if the tape and foil can be formed and the structure and performance are qualified, if the size does not meet the specified accuracy, the surface quality is poor, and the structure Poor uniformity will still lead to problems such as failure to prepare subsequent parts

Method used

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  • Preparation method of Haynes 214 alloy strip foil
  • Preparation method of Haynes 214 alloy strip foil
  • Preparation method of Haynes 214 alloy strip foil

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The Haynes214 alloy ingot was prepared by vacuum induction plus electroslag melting, and forged into a 60mm thick slab at a temperature of 1050 ° C ~ 1120 ° C, and the deformation amount is about 45%. The obtained slab is as follows: figure 1 as shown; heated to 1150°C and hot rolled into a 5.0mm strip with a deformation of about 91%; then subjected to solution treatment at 1160°C for 60 minutes, water-cooled, pickled and sandblasted, and then the strip was cold-rolled, The annealing was repeated 4 times and rolled into a 0.6mm×210mm strip. The rolling process parameters are shown in Table 1.

[0036] Table 1 Rolling process parameters of Example 1

[0037]

Embodiment 2

[0039] The Haynes214 alloy ingot is smelted by vacuum induction and electroslag, and is forged into a 60mm thick slab at 1050℃~1120℃ with a deformation of about 45%; heated to 1200℃ and hot rolled into a 5.0mm strip with a deformation of about 91% ; After solution treatment at 1160 ℃ × 60 minutes, pickling and sand blasting after water cooling, then cold rolling and annealing are repeated for 6 times, and the strip is rolled into a 0.2mm × 210mm strip. The rolling process parameters are shown in Table 2.

[0040] Table 2 Rolling process parameters of Example 2

[0041]

Embodiment 3

[0043] The Haynes214 alloy ingot is smelted by vacuum induction and electroslag, and forged into a 60mm thick slab at 1050℃~1120℃, with a deformation of about 45%; heated to 1250℃ and hot rolled into a 5.0mm strip, with a deformation of about 91% ; After solution treatment at 1120 ℃ × 60 minutes, pickling and sand blasting after water cooling, then cold rolling and annealing are repeated 8 times, and rolled into 0.076mm × 210mm foil, and the obtained foil is prepared as follows: figure 2 shown, image 3 For the foil texture after polishing, Figure 4 is the grain structure of the foil. The rolling process parameters are shown in Table 3.

[0044] Table 3 Rolling process parameter table of Example 3

[0045]

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Abstract

The invention belongs to the field of metal material processing, and particularly relates to a preparation method of Haynes 214 alloy strip foil, which comprises the following specific process flows: smelting, cogging and forging, hot rolling, solution treatment, acid pickling, sand blasting, repeated cold rolling, annealing and solution treatment of a finished product. The cogging forging heating temperature is 1030-1150 DEG C, and the total deformation is 35%-60%; the heating temperature of hot rolling is 1150-1250 DEG C, and the total deformation is 85-95%; the solution treatment comprises the following steps: preserving heat at 1100-1180 DEG C for 30-60 minutes, cooling with water, pickling the surface, and blasting sand; the rolling speed in cold rolling is 4-30 m / min, and the cold rolling deformation between two times of annealing is 30%-60%; the intermediate annealing temperature ranges from 1050 DEG C to 1150 DEG C; and the solution treatment of the finished product comprises the following steps: preserving heat at 1065-1120 DEG C for 10-60 minutes, cooling by adopting 99.999% high-purity argon after the heat preservation is finished, keeping the heat preservation temperature to 200 DEG C and the cooling rate greater than 180 DEG C / min, and then correcting the plate shape. The strip foil prepared through the method has the advantages of being high in size precision, smooth in surface, good in uniformity and consistency and the like, and higher use requirements can be met.

Description

technical field [0001] The invention relates to the field of metal material processing, in particular to a preparation method of Haynes 214 alloy strip and foil. Background technique [0002] Haynes 214 alloy is a Ni-Cr-Al base deformed superalloy with excellent high temperature oxidation resistance, suitable for use under small stress and high temperature conditions. The biggest feature of Haynes 214 alloy is that a relatively high content of Al (about 5%) is added to the Ni-Cr matrix. The high Al content makes the alloy form Al at high temperature. 2 O 3 + Cr 2 O 3 Duplex protective layer. This hybrid protective layer is better than the single Cr of other high temperature oxidation resistant alloys 2 O 3 The protective layer has better anti-oxidation ability at high temperature, so the maximum anti-oxidation temperature of this alloy can reach 1315℃. In addition, the alloy also has very good corrosion resistance in carburizing environment, nitriding environment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10C21D9/46C22B9/18C22C1/02C22F1/02
CPCC22F1/10C22F1/02C21D9/46C22C1/023C22B9/18Y02P10/25
Inventor 信昕孙文儒刘家奥朱旭晖张伟红贾丹祁峰刘芳朱崇伟熊峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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