Evolution of the Structure, Texture, and Mechanical Properties of Austenitic Stainless Steel during Annealing after Cold Radial Forging

• Published in: Physics of metals and metallography Vol. 124; no. 6; pp. 607 - 615
• Main Authors: Chernichenko, R. S., Panov, D. O., Naumov, S. V., Kudryavtsev, E. A., Mirontsov, V. V., Salishchev, G. A., Pertsev, A. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.06.2023; Springer; Springer Nature B.V
• Subjects: Annealing; Austenitic stainless steels; Chemistry and Materials Science; Cold forging; Hardness; Low temperature; Materials Science; Mechanical properties; Metallic Materials; Plastic deformation; Plastic properties; Polygonization; Radial forging; Recrystallization; Strength and Plasticity; Surface layers; Texture; plasticity; austenitic steel; strength; radial forging; texture; structure
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X23600537

—The effect of annealing temperature on the structure, texture, and mechanical properties of the austenitic 08Kh16N13M2T stainless steel after cold radial forging to a degree of 95% has been investigated. Preliminary plastic deformation results in the formation of austenitic structural and 〈111〉 and 〈100〉 textural gradients. Low-temperature annealing (500–600°C) causes structural polygonization. The intensity of the 〈111〉 and 〈100〉 textural components remains unchanged. Annealing at 700°С initiates recrystallization only in the surface layers of the bar. Annealing at 800–900°C results in static recrystallization processes throughout the bar cross section, which blurs the textural gradient. Annealing at 400–600°C increases the strength and hardness properties. Moreover, the plasticity increases with increasing annealing temperature. Annealing at 700°C makes the material soften almost to the level of the initial cold-deformed state and significantly increases its plasticity.