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<p>The study investigates the influence of Strain-Induced Melt Activation on physical, microstructural and mechanical behavior of Zn – Al alloys. Initially, the alloy displayed a dendritic structure. Following the SIMA process (casting, forging at 250°C followed by partial remelting at 470°C with holding period of 10 and 20 minutes), the dendritic structure transitioned into a globular and spheroidize morphology. This transformation was attributed to the combined effects of forging and disintegration of primary α (Al-rich) phase dendrites, leading to grain elongation. Furthermore, an increase in the distribution of the eutectoid β (Zn-rich) phase accompanied by a reduction in grain size was observed. SIMA process with holding time 10 minutes results in significant improvement in physical, morphological and mechanical properties of Zn – 27Al alloy.</p>

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Effect of SIMA (Strain Induced Melt Activation) Process on the Microstructure and Mechanical Properties of Zn – 27Al Alloy

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Vineet Kumar,
  • Ankit,
  • Sandeep Kumar Gupta,
  • Aman Kumar Singh

摘要

The study investigates the influence of Strain-Induced Melt Activation on physical, microstructural and mechanical behavior of Zn – Al alloys. Initially, the alloy displayed a dendritic structure. Following the SIMA process (casting, forging at 250°C followed by partial remelting at 470°C with holding period of 10 and 20 minutes), the dendritic structure transitioned into a globular and spheroidize morphology. This transformation was attributed to the combined effects of forging and disintegration of primary α (Al-rich) phase dendrites, leading to grain elongation. Furthermore, an increase in the distribution of the eutectoid β (Zn-rich) phase accompanied by a reduction in grain size was observed. SIMA process with holding time 10 minutes results in significant improvement in physical, morphological and mechanical properties of Zn – 27Al alloy.