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<p>This study examines the effect of deep cryogenic treatment at − 196&#xa0;°C on the tribological and corrosion properties of brass alloy 272, composed of CuZn37. The samples underwent cryogenic treatment for 72&#xa0;h in a nitrogen chamber, and their properties were compared with those of untreated samples. The cryogenically treated samples demonstrated a reduction in mass loss during abrasion tests by approximately 15% compared to the untreated samples. Additionally, they exhibited a 12% increase in hardness, as measured by Vickers microhardness tests. The microstructure analysis of the treated samples revealed twinned alpha grains within a beta phase matrix. Optical emission spectroscopy detected the presence of elements such as copper, lead, iron, and zinc, alongside other impurities. Corrosion tests indicated no significant difference in corrosion resistance between treated and untreated samples. The surface roughness (Ra) of the treated samples was found to be 38% lower than that of the untreated ones. Overall, the cryogenic treatment was shown to positively influence the properties of brass alloy 272, suggesting its potential in the development of high-performance brass alloys for industrial applications.</p>

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Tribological and Corrosion Properties of Deep Cryogenic Treated CuZn37 Brass Alloy

  • 期刊论文

  • 发表日期：

    2025年3月26日

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  • N. Sathishkumar,
  • G. Kasirajan,
  • Rahul Senthil Kumar,
  • R. Sarathi

摘要

This study examines the effect of deep cryogenic treatment at − 196 °C on the tribological and corrosion properties of brass alloy 272, composed of CuZn37. The samples underwent cryogenic treatment for 72 h in a nitrogen chamber, and their properties were compared with those of untreated samples. The cryogenically treated samples demonstrated a reduction in mass loss during abrasion tests by approximately 15% compared to the untreated samples. Additionally, they exhibited a 12% increase in hardness, as measured by Vickers microhardness tests. The microstructure analysis of the treated samples revealed twinned alpha grains within a beta phase matrix. Optical emission spectroscopy detected the presence of elements such as copper, lead, iron, and zinc, alongside other impurities. Corrosion tests indicated no significant difference in corrosion resistance between treated and untreated samples. The surface roughness (Ra) of the treated samples was found to be 38% lower than that of the untreated ones. Overall, the cryogenic treatment was shown to positively influence the properties of brass alloy 272, suggesting its potential in the development of high-performance brass alloys for industrial applications.