Preparation process of high-performance low-cost titanium alloy

Abstract

The invention relates to a preparation process of a high-performance low-cost titanium alloy. The preparation process comprises the following steps: carrying out bottoming and sealing on a small amount of sponge Ti, laying a layer of sponge Ti, recycled materials, intermediate alloy mixture, Al beans and Cr mixture, and extruding the mixture into an electrode block after repeating the laying for 3-4 times; smelting the electrode block twice, and peeling off the two end surfaces and the side surface after smelting to obtain a blank; sequentially carrying out no less than three heating times offorging and 3-4 heating times of rolling on the blank to obtain a titanium alloy semi-finished product; cutting the titanium alloy semi-finished product into the titanium alloy semi-finished product with required size and then carrying out annealing; and screening alloy titanium plates with qualified performance, and carrying out surface repair treatment to obtain the titanium alloy plates. The process is simple, large-batch stable production can be realized, and the comprehensive performance of the prepared titanium alloy plates is good; and through rolling and annealing, the tensile strengthis larger than or equal to 1050 MPa, the yield strength is 1000-1150 MPa, and the elongation rate is larger than or equal to 10%.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy plate preparation, and in particular relates to a high-performance and low-cost titanium alloy preparation process. Background technique [0002] Lightweight composite armor has been researched and applied since the 1960s. While maintaining the ballistic performance of composite armor and slightly improving the ability to resist multiple projectile attacks, try to use light backboard materials to greatly reduce the armor system. the weight of. The armor of light combat vehicles has always been limited by the vehicle's weight, and as militaries increasingly rely on these vehicles, the problem of armor protection has become more and more prominent. Armor material that increases vehicle weight. [0003] Titanium alloy has the advantages of high specific strength, non-magnetic, corrosion resistance and good dynamic performance. It is used in armored chariots, which can greatly reduce the weig...

AI Technical Summary

Problems solved by technology

[0007] In order to reduce the weight of tanks and replace steel armor materials, there is a demand for high-performance and low-cost titanium alloys in the armor field, requiring titanium alloys to have strength ≥ 1050 MPa, elongation ≥ 10%, and good comprehensive performance. In addition, the application of titanium alloys for armor is not yet Generally, in addition to insufficient application accumulation and insufficient strength, high cost is also an important reason for restricting applications. Therefore, low cost should also be considered when developing high-performance titanium alloys.

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