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<p>This study explores the influence of adding trace alloying elements titanium (Ti), vanadium (V), and zirconium (Zr) on the microstructure and mechanical properties of piston alloy based on a cast 13Si–2.5Cu–1.3Mg–2Ni piston alloy, which is similar to AA 339. The study used Brinell hardness and tensile properties to characterize the mechanical properties of castings with different alloy element contents and observed their microstructure by means of metallographic microscope, scanning electron microscope and transmission electron microscope. The following conclusion is drawn through the main effect analysis of orthogonal test: The titanium (Ti) factor has the greatest influence on the hardness of the alloy. When the titanium (Ti) content is 0.2%, the average hardness of the alloy reaches the highest; the zirconium (Zr) factor has the most significant influence on the mechanical properties of the alloy. A zirconium content of 0.1% can significantly improve the tensile strength and yield strength of the alloy; however, the vanadium (V) factor has little influence on the hardness and mechanical properties of the alloy.</p>

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Effect of Ti, V, and Zr on the Microstructure and Properties of Piston Alloys

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • Shan Gao,
  • Zhiping Sun,
  • Zhiming Wang,
  • Xiaoyu Gu

摘要

This study explores the influence of adding trace alloying elements titanium (Ti), vanadium (V), and zirconium (Zr) on the microstructure and mechanical properties of piston alloy based on a cast 13Si–2.5Cu–1.3Mg–2Ni piston alloy, which is similar to AA 339. The study used Brinell hardness and tensile properties to characterize the mechanical properties of castings with different alloy element contents and observed their microstructure by means of metallographic microscope, scanning electron microscope and transmission electron microscope. The following conclusion is drawn through the main effect analysis of orthogonal test: The titanium (Ti) factor has the greatest influence on the hardness of the alloy. When the titanium (Ti) content is 0.2%, the average hardness of the alloy reaches the highest; the zirconium (Zr) factor has the most significant influence on the mechanical properties of the alloy. A zirconium content of 0.1% can significantly improve the tensile strength and yield strength of the alloy; however, the vanadium (V) factor has little influence on the hardness and mechanical properties of the alloy.