1. Development of two-dimensional temperature field solution method based on the stress–strain response of 316LN stainless steel at cryogenic temperatures.
- Author
-
Xie, Liancheng, Zhang, Hengcheng, Wu, Shanshan, Shen, Fuzhi, Xin, Jijun, Huang, Chuanjun, Jiang, Mingyue, Huang, Zichun, Wang, Wei, and Li, Laifeng
- Subjects
- *
STAINLESS steel , *AUSTENITIC stainless steel , *DIGITAL image correlation , *STRAINS & stresses (Mechanics) , *NICKEL-titanium alloys , *MARTENSITIC transformations , *TENSILE tests - Abstract
• The two-dimensional temperature field of the tensile process was investigated based on Digital Image Correlation (DIC) technology and cooling heat transfer model. • The reconstructed temperature field is in good agreement with the temperature rise in the tensile process. • The observed trend of increased martensite production is consistent with the simulated predictions. To better understand the tensile fracture behavior and temperature variation during the tension testing of the 316LN at cryogenic temperatures, a two-dimensional temperature field solution method is developed based on two-dimensional strain field measured by the digital image correlation technology combined with the Taylor Quinney coefficient model and the intrinsic model of strain-induced martensitic phase transformation. The method allows for visualization of the strain field and temperature variation of the 316LN austenitic stainless steel at cryogenic temperature. By numerical simulation, the localized temperature elevation of the 316LN is determined to be 13.3 K during the tensile test at 77 K, which is in good agreement with the experimental result of 10.2 K. This model reconstructed the two-dimensional temperature field variation throughout the entire tensile test, which is beneficial for facilitating the analysis of the mutual relation between the mechanical properties and microstructural evolution of the 316LN and other metastable austenitic stainless steels in cryogenic temperatures. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF