Influence of Deformation and Temperature on the Austenitic Stainless Steel Performance

Abstract:

Austenitic stainless steels widely used in cryogenic pressure vessel construction, and heads are formed by cold or warm spinning and stamping. Because of large deformation at excessive circular arc and at the straight parts of head during fabrication, the possibility of damage in these two positions during service is very high. In order to solve this problem, the commonly used S304408, S30403, S31608 steel plates processed under different temperature, different deflection and deformation rate were comparative studied. The evolution of the microstructure and mechanical properties were investigated to quantify the driving characteristics of the martensitic transformation by temperature and mechanical deformation. Consequently, the intergranular corrosion resistance of different microstructure was studied. The results of the research provide valuable reference for the selection and the processing technology of the head steel. Meanwhile, this study also provides a simple method for estimating the material properties after forming.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 984-992
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.984
• Online since: March 2016
• Authors: Xue Tao Zhang*, Tong Xu, Ming Song, Bo Zhao, Yi Liang Zhang
• Keywords: Austenite Stainless Steel, Cryogenic Vessel, Deformed-Induced Martensite, Temperature Processing

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