Wrapping cover method suitable for isothermal forging of Ti-Al-series intermetallic compound
An intermetallic compound and isothermal forging technology, which is applied in the field of warm forging sheathing, can solve the problems of narrow deformation temperature range, easy cracking, easy drum shape of the material, and difficult deformation of the upper and lower surfaces, so as to meet the requirements of simple forging equipment and reduce the temperature. The effect of loss and narrow heat-affected zone
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[0040] Example 1
[0041] A cladding method suitable for isothermal forging of Ti-Al intermetallic compounds. The Ti-Al intermetallic compound in this embodiment is Ti 2 AlNb-based alloy, the size of the sheath is determined by the size of the blank 3. The sheath of the invention has heat preservation effect, good deformation coordination, easy welding, simple and easy operation, reduces the vacuuming process, and improves production efficiency. The structure of the sheath is simple and practical, low cost, easy to operate, and can be used for Ti 2 AlNb-based alloy is produced by isothermal forging, and it is also suitable for other difficult-to-deform alloys and high-temperature alloys. The specific steps are as follows:
[0042] 1. Wrap preparation: The size of blank 3 is Φ60×100mm, considering the size of blank 3, heat preservation and deformation compatibility, the sheath wall thickness is selected as 10mm. The jacket material is made of low-carbon steel. According to the de...
Example Embodiment
[0050] Example 2
[0051] A cladding method suitable for isothermal forging of Ti-Al intermetallic compounds. The Ti-Al intermetallic compound in this embodiment is Ti 2 AlNb-based alloy, the size of the sheath is determined by the size of the blank 3. The sheath of the invention has heat preservation effect, good deformation coordination, easy welding, simple and easy operation, reduces the vacuuming process, and improves production efficiency. The structure of the sheath is simple and practical, low cost, easy to operate, and can be used for Ti 2 AlNb-based alloy is produced by isothermal forging, and it is also suitable for other difficult-to-deform alloys and high-temperature alloys. The specific steps are as follows:
[0052] 1. Preparation of the sheath: The sheath can be made of stainless steel, pure titanium or titanium alloy. The size of the blank 3 in this embodiment is Φ60×109mm. Taking into account the size of the blank 3, the insulation and deformation compatibility,...
Example Embodiment
[0060] Example 3
[0061] A cladding method suitable for isothermal forging of Ti-Al intermetallic compounds. This embodiment is basically the same as embodiment 1, except that the Ti-Al intermetallic compound in this embodiment is a TiAl-based alloy, and the isothermal forging process parameters of this embodiment are: blank temperature 1200°C / 2.5h, The mold temperature is 950℃, and the isothermal forging strain rate is 1×10 -2 s -1 , The deformation is 60%, after isothermal forging, the blank with the sheath is annealed at 1100℃ / 10h. The photo of the sample after isothermal forging removed the sheath is as follows image 3 with Figure 4 Shown. by image 3 with Figure 4 Yes, after one-step sheathing isothermal forging, the surface quality of TiAl-based alloy samples is better, and no microcracks are generated.
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