Investigation of residual stress in quenched and tempered rebar using finite element simulation and experimental method

Subject Areas : Journal of New Applied and Computational Findings in Mechanical Systems

Seyyed Ehsan Razavi ¹ , Pezhman Taghipour Birgani ^{2 *}

1 - Department of Mechanical Engineering, Ahv.C., Islamic Azad University, Ahvaz, Iran
2 - Department of Mechanical Engineering, Ahv.C., Islamic Azad University, Ahvaz, Iran

Received: 2025-04-15 Accepted : 2025-08-26 Published : 2025-09-01

Keywords: Steel Rebar, Quenching and Tempering, Finite Element, Residual Stress, Hole Drilling,

Abstract :

One of the common methods in the production of steel rebar with a yield strength of at least 500 MPa is the use of quench tempering (trade name Termex). Reducing the cost of purchasing raw materials and improving mechanical properties are the most important reasons for using this operation in production lines. In this study, finite element simulation of the Termex process was performed with the aim of understanding the effect of quenching and tempering operations on the residual stresses of 25 mm rebar using ANSYS software, and the results of the simulation were compared with the results of the experimental hole-drilling strain-gage test. The finite element simulation results show that the von Mises residual stress is 155.6 MPa at the center of the cross-sectional area of ​​25 mm rebar. Also, the test results show that the compressive residual stress in the center of the sample cross-section at different depths between 0.256 and 2.002 mm has values ​​between 85 and 194.5 MPa, and in this test, the stress depends on the drilling depth.

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