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In this study, the corrosion properties of AISI 316 stainless steelAISI 316 stainless steel were investigated, with a focus on intergranular corrosionIntergranular corrosion and pitting corrosion. AISI 316 is widely used in chemical, petrochemical, and nuclear industries due to its mechanical properties and microstructure. Intergranular corrosionIntergranular corrosion occurs when the steel is sensitized to temperatures between 500 and 800 °C, leading to chromium-rich carbide precipitation and the formation of chromium-depleted regions. Solution annealingSolution annealing followed by rapid quenching was employed to mitigate intergranular corrosion. Pitting corrosion, on the other hand, is caused by localized corrosion attacks on heterogeneous surface regions. Electrochemical analysis and oxalic etch testing were used to classify etch structures and assess corrosion susceptibility. The study also evaluated the effects of solution annealingSolution annealingand sensitizationSensitization on hardness. Results revealed the impact of solution annealing on microstructure, corrosion resistanceCorrosion resistance, and hardness in sensitized AISI 316 stainless steelAISI 316 stainless steel.

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Investigation of Microstructure, Corrosion Behavior, and Hardness in Sensitized AISI 316 Stainless Steel Subjected to Solution Annealing

  • 章节

  • 发表日期：

    2026年

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  • Mohd Fauzi Abu Hassan,
  • Wong King Jye,
  • Shahrulzaman Shaharuddin,
  • Muhammad Azmi,
  • Mohd Anuar Ismail,
  • Mahzan Johar

摘要

In this study, the corrosion properties of AISI 316 stainless steelAISI 316 stainless steel were investigated, with a focus on intergranular corrosionIntergranular corrosion and pitting corrosion. AISI 316 is widely used in chemical, petrochemical, and nuclear industries due to its mechanical properties and microstructure. Intergranular corrosionIntergranular corrosion occurs when the steel is sensitized to temperatures between 500 and 800 °C, leading to chromium-rich carbide precipitation and the formation of chromium-depleted regions. Solution annealingSolution annealing followed by rapid quenching was employed to mitigate intergranular corrosion. Pitting corrosion, on the other hand, is caused by localized corrosion attacks on heterogeneous surface regions. Electrochemical analysis and oxalic etch testing were used to classify etch structures and assess corrosion susceptibility. The study also evaluated the effects of solution annealingSolution annealingand sensitizationSensitization on hardness. Results revealed the impact of solution annealing on microstructure, corrosion resistanceCorrosion resistance, and hardness in sensitized AISI 316 stainless steelAISI 316 stainless steel.