Effect of composition and microstructure on the rusting of MS rebars and ultimately their impact on mechanical behavior

• DOI: 10.1139/tcsme-2021-0207
• Publication Date: 2022-04-29T21:36:06Z
• Authors: Atif Shazad; Junaid Jadoon; Muhammad Uzair; Maaz Akhtar; Abdul Shakoor; Muhammad Muzamil; Mohsin Sattar
• Keywords: Tempering; Rebar; Pitting Corrosion; Tensile testing

Rebar steel is used for reinforcement to aid concrete because does not sustain tension. Thermomechanical treatment an advanced manufacturing technique rebar production, but rusting problems emerged in the local industry. Raw material sampling included ingot casting (IC) and continuous (CC). IC samples corroded more frequently than CC samples. Spectroscopy indicated a small amount of chromium improper ratio manganese sulfur The promoted hot cracking at grain boundaries, which resulted intergranular corrosion. microstructural results G40 (air cooled) G60 (water showed ferrite martensite different proportions. deformed inclination corrosion, no proper stable layer was found. percentage enough retaliate against Highly pressurized water initiated pitting corrosion due formation pits on surface. Tensile testing revealed 10% reduction ultimate strength, 8% yield 30% elongation Environmental study that humidity level industry greater laboratory space. High values SO x NO emission involvement environment deterioration product