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In commercial structural materials such as Fe, Al, and Ti, a higher r-valueR-value indicates higher formabilityFormability (Kawabe et al. in JSAE Rev 23:139–141, 2002). However, magnesium alloysMagnesium alloy, with their limited slip systems during deformation, typically develop a strong basal textureTexture after thermo-mechanical treatmentThermo-mechanical treatment, resulting in a poor formabilityFormability at room temperature although their r-values are high. The relationship between this opposing behavior of r-valueR-value with textureTexture and formabilityFormability in magnesium alloyMagnesium alloy is not yet fully understood. This study aims to understand the relationship between r-valueR-value and formabilityFormability inMg Mg alloy sheets. We systematically analyzed the correlation of r-valueR-value with the initial textureTexture, alloying elements, Schmid factors (SF) for each slip system and formabilityFormability. The study clearly shows that the formabilityFormability of magnesium alloyMagnesium alloy sheets can be predicted by r-values, which can be simply measured by uni-axial tensile loading, and it also provides the insights into how to control the alloy composition and textureTexture in order to improve mechanical propertiesMechanical properties.

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Correlation of R-value with Texture and Formability in Magnesium Alloy Sheets

  • 会议论文

  • 发表日期：

    2025年

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  • Seoungyooun Yu,
  • Ying Ma,
  • Young Min Kim,
  • Sung Hyuk Park,
  • Byeong-Chan Suh

摘要

In commercial structural materials such as Fe, Al, and Ti, a higher r-valueR-value indicates higher formabilityFormability (Kawabe et al. in JSAE Rev 23:139–141, 2002). However, magnesium alloysMagnesium alloy, with their limited slip systems during deformation, typically develop a strong basal textureTexture after thermo-mechanical treatmentThermo-mechanical treatment, resulting in a poor formabilityFormability at room temperature although their r-values are high. The relationship between this opposing behavior of r-valueR-value with textureTexture and formabilityFormability in magnesium alloyMagnesium alloy is not yet fully understood. This study aims to understand the relationship between r-valueR-value and formabilityFormability inMg Mg alloy sheets. We systematically analyzed the correlation of r-valueR-value with the initial textureTexture, alloying elements, Schmid factors (SF) for each slip system and formabilityFormability. The study clearly shows that the formabilityFormability of magnesium alloyMagnesium alloy sheets can be predicted by r-values, which can be simply measured by uni-axial tensile loading, and it also provides the insights into how to control the alloy composition and textureTexture in order to improve mechanical propertiesMechanical properties.