Transient high temperature mechanical properties of chromium-nickel-manganese-nitrogen austenitic stainless steel 1Cr17Ni2Mn15N (AISI205)

Instantaneous High Temperature Mechanical Property of 1Cr17Ni2Mn15N(AISI205) Chromium-Nickel-Manganese-Nitrogen Austenitic Stainless Steel

The mechanical properties of materials at high temperatures often significantly influence the performance and efficiency of engines, boiler and other mechanical components. Among them, chromium-nickel-manganese-nitrogen austenitic stainless steel (1Cr17Ni2Mn15N, referred to as AISI205) is a complex material with high strength, high temperature resistance and corrosion resistance. Therefore, studies on the high temperature mechanical properties of 1Cr17Ni2Mn15N (AISI205) are of great significance for the design, production and safe application of materials and components.

In this experiment, the high temperature mechanical properties of 1Cr17Ni2Mn15N (AISI205) were investigated using a universal tensile tester. The thermal treatments of sample prior and after testing were 250°C/3h and 700°C/3h, respectively, and the test temperature range was from 10°C to 1250°C. The sample used for testing was the AISI205 steel with a diameter of 6 mm and a gauge length of 100 mm. The tensile test was performed with a loading rate of 50 N/s, and the strain rate was 1.75×10-2N/mm2. The true strain of the sample was detected by the strain gauge and then the true stress was calculated according to the load history.

The results show that the instantaneous strength of the 1Cr17Ni2Mn15N (AISI205) steel remains constant at low temperatures, start to decrease when temperature rises above 500°C, and then follows the rule of low temperature Arrhenius equation. The true stress-true strain curve shows that at temperatures lower than 500°C, the 1Cr17Ni2Mn15N (AISI205) steel exhibits quite a good linear elasticity, while at temperatures higher than 500°C the mechanical property is not just a function of temperature, and strain hardening also plays a important role.

In conclusion, under the given test conditions, the mechanical properties of 1Cr17Ni2Mn15N (AISI205) steel can be described roughly by the Arrhenius equation in the range of 10°C-500°C. Its instantaneous strength begins to decrease when temperature rises above 500°C, and the ductility is low at temperatures higher than 500°C due to increase in strain hardening.

The ultra-high temperature material 1Cr17Ni2Mn15N (AISI205) is a stainless steel containing chromium, nickel, manganese and nitrogen elements, and has high corrosion resistance. The composition of the material can well resist a variety of severe conditions, such as high temperature, metal Alteration and thermal deformation.

It was found that the performance of 1Cr17Ni2Mn15N stainless steel may be negatively affected when it is subjected to instantaneous high temperature. This is due to the fact that the material deforms plastically at high temperatures and interatomic lattice distortions may occur. In order to give this material good transient high temperature behavior, we need to evaluate its heat resistance and hot strength properties.

In order to evaluate the transient high temperature sensitivity of 1Cr17Ni2Mn15N (AISI205) stainless steel, the researchers used computer simulation methods to evaluate its mechanical properties. The results showed that under the same conditions, the tensile strength and deformation temperature of the material weakened with increasing temperature.

In addition, the fracture strength and deformation strength of 1Cr17Ni2Mn15N stainless steel are significantly reduced under instantaneous high temperature. The volume change of the material will also increase with the increase of temperature, and have a certain influence on the change of the tensile strength and breaking strength of the material.

To sum up, the mechanical properties of 1Cr17Ni2Mn15N (AISI205) stainless steel under instantaneous high temperature conditions are relatively unsatisfactory, especially in terms of tensile strength and fracture strength. However, the material is highly resistant to corrosion and has good heat resistance and strength, so it can still be used in this particular environment.