Vol. 21, No. 2, pp. 110-118 (2025)
A REVIEW ON: MECHANICAL, AND MICROSTRUCTURAL BEHAVIORS OF
DUPLEX AND AUSTENITIC STAINLESS-STEEL REINFORCING REBAR
AFTER EXPOSURE TO ELEVATED TEMPERATURES
Haitham Abdallah Khamis AL Adawani 1, Tuan Zaharinie Tuan Zahari 1, 2, * and
Muhammad Khairi Faiz bin Ahmad Hairuddin 1, 2
1 Department of Mechanical Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
2 Centre of Advanced Manufacturing and Material Processing, Universiti Malaya,50603 Kuala Lumpur, Malaysia
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 20 March 2024; Revised: 20 December 2024; Accepted: 20 December 2024
DOI:10.18057/IJASC.2025.21.2.2
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ABSTRACT
The utilization of structural stainless steel has risen due to its attractive aesthetic and architectural features as well as its durability. This paper examines previous research on the use of duplex and austenitic stainless steel reinforcement bars in reinforced concrete structures, focusing on their material properties affected by prolonged exposure to high temperatures and different cooling methods. It is important to know that for duplex stainless steel reinforcing rebar, the manufacturing process plays a critical role in preventing the formation of excessively brittle phases, such as sigma phases, within the microstructure. Duplex stainless steel rebars exhibit a less stable microstructure, making them more susceptible to changes under similar conditions compared to austenitic rebars. This paper provides a comprehensive review of the literature on reinforcing bars comprised of duplex and austenitic stainless steel for use in reinforced concrete constructions.
KEYWORDS
Structural stainless steel, Duplex and austenitic stainless-steel reinforcing rebar, Mechanical properties, High temperatures, Manufacturing process
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