The Investigation on Strain Strengthening Induced Martensitic Phase Transformation of Austenitic Stainless Steel: A Fundamental Research for the Quality Evaluation of Strain Strengthened Pressure Vessel

3rd International Conference on Energy Equipment Science and Engineering

Li, Bo^1 ; Ren, Fa Cai^1 ; Tang, Xiao Ying^1

Shanghai Institute of Special Equipment Inspection and Technical Research (SSEI), Shanghai

200333, China^1

关键词: Cryogenic pressure vessels;    Deformation-induced martensite;    Fundamental research;    Martensitic phase;    Martensitic phase transformations;    Quality evaluation;    Safety performance;    Strengthening technologies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012005/pdf
DOI  :  10.1088/1755-1315/128/1/012005

来源: IOP

【 摘 要 】

The manufacture of pressure vessels with austenitic stainless steel strain strengthening technology has become an important technical means for the light weight of cryogenic pressure vessels. In the process of increasing the strength of austenitic stainless steel, strain can induce the martensitic phase transformation in austenite phase. There is a quantitative relationship between the transformation quantity of martensitic phase and the basic mechanical properties. Then, the martensitic phase variables can be obtained by means of detection, and the mechanical properties and safety performance are evaluated and calculated. Based on this, the quantitative relationship between strain hardening and deformation induced martensite phase content is studied in this paper, and the mechanism of deformation induced martensitic transformation of austenitic stainless steel is detailed.