In the range of 25-300 °C, with the increase of the deformation temperature, the strength and elongation of the developed materials gradually decrease whether in the hot-rolled state, cold-rolled state or solid solution state. The reason may be that the temperature increases, the stacking fault energy of the material increases, and the deformation mechanism changes from twinning to slipping. 4.210-4-6. In the 310-3/rate range, with the increase of the strain rate, the strength and elongation of the material gradually decrease, which may be due to the increase of the strain rate, the restricted movement of dislocations, and the difficulty in forming deformation twins. The corrosion resistance of the material was tested and analyzed by the electrochemical workstation of the metal material. The developed 2205 stainless steel seamless pipe has excellent corrosion resistance after solution treatment, and the corrosion resistance decreases after deformation. The addition of Cr and Ni elements helps In order to improve the corrosion resistance, the mechanochemical effect of corrosion is the main reason for the reduction of corrosion resistance after deformation.

The finite element simulation method is used to simulate the expansion process of the large expansion rate expansion pipe, and the results are similar to those of the dynamic tensile test under the condition of the downhole temperature field. In some radio products, silver-plated 2205 stainless steel seamless pipe material is required. However, if the 2205 stainless steel seamless pipe material (part) is electroplated, how to solve the problem that it is difficult to electroplate without special treatment? After repeated experiments, the following better methods were concluded. After the 2205 stainless steel seamless pipe has undergone process measures such as machining, heat treatment, and welding, a layer of oxide scale will be formed on its surface. This layer of oxide scale is difficult to remove by the pickling method before general ferrous metal plating, which is one of the reasons for the difficulty in electroplating. The oxide scale on the surface of 2205 stainless steel tube mainly contains: ferric oxide (Fe_2O_3), hydrated ferric oxide (Fe_2O_3mH_2O), ferric oxide (Fe_3O_4), chromium oxide (Cr_2O_3), silicon dioxide (SiO_2) , oxides such as titanium dioxide (TiO_2) and spinel. In order to be able to electroplating, it is necessary to remove the pretreatment of these oxide 2205 stainless steel seamless pipe electroplating.