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<p>In order to improve the wear and erosion–corrosion resistance of unlined cement slurry transport pipelines, this study examines the efficacy of heat treatment. The study focuses on low-carbon St-52-3 steel, a common structural element in cement factories where pipelines are frequently run without coatings or linings for protection. Austenitizing at 950&#xa0;°C for 1, 2, and 3&#xa0;h was followed by water quenching and tempering at 500&#xa0;°C to investigate the impact of heat treatment on the microstructure and performance of the steel. In order to assess the improvements brought about by heat treatment, the as-received state served as a reference. Microhardness, wear, surface roughness, and erosion–corrosion tests were among the experimental investigations carried out in alkaline cement slurry conditions. The sample that was austenitized for two hours in particular performed well, as seen by its enhanced hardness, decreased surface roughness, and low material loss. Microstructure that most likely contains bainitic and tempered martensitic components, which increases resistance to corrosion processes and particle-induced damage, is responsible for these advancements. The results indicate that heat treatment is an efficient and underutilized method for enhancing the longevity of unlined cement slurry pipelines, providing a workable substitute for traditional protective coatings and linings.</p> Graphical Abstract <p></p>

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Heat Treatment as an Effective Strategy to Enhance the erosion–corrosion Resistance of Unlined Cement Slurry Transport Pipelines

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • Shaymaa Abbas Abdulsada,
  • Ali I. Al-Mosawi

摘要

In order to improve the wear and erosion–corrosion resistance of unlined cement slurry transport pipelines, this study examines the efficacy of heat treatment. The study focuses on low-carbon St-52-3 steel, a common structural element in cement factories where pipelines are frequently run without coatings or linings for protection. Austenitizing at 950 °C for 1, 2, and 3 h was followed by water quenching and tempering at 500 °C to investigate the impact of heat treatment on the microstructure and performance of the steel. In order to assess the improvements brought about by heat treatment, the as-received state served as a reference. Microhardness, wear, surface roughness, and erosion–corrosion tests were among the experimental investigations carried out in alkaline cement slurry conditions. The sample that was austenitized for two hours in particular performed well, as seen by its enhanced hardness, decreased surface roughness, and low material loss. Microstructure that most likely contains bainitic and tempered martensitic components, which increases resistance to corrosion processes and particle-induced damage, is responsible for these advancements. The results indicate that heat treatment is an efficient and underutilized method for enhancing the longevity of unlined cement slurry pipelines, providing a workable substitute for traditional protective coatings and linings.

Graphical Abstract