Development of a method for calculating the coefficient of thermal expansion in phase transformation temperature intervals
DOI:
https://doi.org/10.52340/atsu.2025.1.25.18Keywords:
thermal expansion, coefficient, dilatometric curve, linear regressionAbstract
The paper analyzes dilatometric curves and proposes a method for determining the coefficient of linear expansion in the temperature intervals of phase transformations. Experiments conducted by foreign researchers and the method proposed by them are used for comparative analysis. The temperature interval of the phase transformation of the dilatometric curve is divided into two regions, and the „AutoCad“ and „MathCad“ software packages are used for the simulation. The values of the regression coefficients are found using the built-in functions of „MathCad“ and the dependence of the coefficient of thermal expansion on temperature in each region is determined.
References
Babinetz, A.A. 2019. Influence of the chemical composition and structure of the weld metal on the deformation of thin steel plates. Kiev (in Russian).
James, A. Leach., Shawna, Lockhart. 2022. AUTOCAD 3D 2023 INSTRUCTOR. SDC Publications. Kiryanov, Dimitry. 2006. Self-study MathCad 13. (in Russian).
Panov, D.O. 2014. „Dilatometric studies of austentization processes in the intercritical temperature range of hardened and high-tempered low-carbon steel“ // Modern Problems of Science and Education. No. 6. (in Russian). URL: https://scienceeducation.ru/ru/article/view?id=16033
Vinokurov, V.A. 1984. The theory of welding stress and deformations, Moscow (in Russian).
