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Residual Mechanical Properties of Cold-Worked Austenitic Stainless-Steel Reinforcing Rebar After Exposure to Elevated Temperatures: A Non-linear Analysis
Haitham Abdallah Khamis AL Adawani Haitham Abdallah Khamis AL Adawania, Tuan Zaharinie Tuan Zahari Tuan Zaharinie Tuan Zaharib and Muhammad Khairi Faiz bin Ahmad Hairuddin Muhammad Khairi Faiz bin Ahmad Hairuddinb
aDepartment of Mechanical Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
bDepartment of Mechanical Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.; Centre of Advanced Manufacturing and Material Processing, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
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Abstract:
This study focuses on the finite element analysis of the residual mechanical properties of 316 EN 1.4401 cold-worked austenitic stainless steel reinforc¬ing bars, compared to experimental results. The study assessed the influence of user-defined material proper¬ties on an isotropic elasticity model and a multilinear isotropic hardening model, evaluated under different conditions to validate against experimental observa¬tions. This study demonstrated a strong correlation be¬tween experimental results and numerical simulations, showing only slight differences in the residual mechanical response across various cooling methods. The investigation revealed a high correlation between total maximum strain (mm/mm) and user-defined (the total elastic and plastic strain). The variation in ultimate tensile strength (𝑓ᵤ) between the experimental and numerical results is less than 2% except for one case which involving slow cooling inside furnace at 500°C (2.5%). Likewise, the difference in 0.2% proof strength (𝑓0.2p) is below 2.5%, except for three cases involving rapid water cooling at 500°C (3.2%) and intermediate air cooling at 500°C (3.3%) and 500°C (3.8%) respectively. Therefore, the numerical methods can enhance the precision of experimental results for assessing structural characteristics.
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Keywords: Stainless steel, Residual mechanical properties, EN1.4401 Austenitic stainless steel reinforcing bars, Proof strength, Ultimate tensile strength.
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2026
CSME , ISSN 0257-9731
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