Materials Research Letters (Oct 2024)

Research on strengthening mechanism of AZ63 cast magnesium alloy based on precipitation phase orientation control

  • Shihui Ruan,
  • Mingbo Yang,
  • Haijun Wang,
  • Yan Li,
  • Renju Cheng,
  • Yongfeng Zhou,
  • Linxi Jiang

DOI
https://doi.org/10.1080/21663831.2024.2382753
Journal volume & issue
Vol. 12, no. 10
pp. 737 – 744

Abstract

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A high strength and toughness AZ63 cast magnesium alloy whose ultimate tensile strength, yield strength and elongation at room temperature respectively reached 319 MPa, 160 MPa and 7.6%, was developed by combining the alternating-temperature ultrasonic melt treatment and T6 heat treatment. The high as-aged tensile properties of the alloy with the alternating-temperature ultrasonic melt treatment are mainly attributed to the remarkable increase of the β-prismatic precipitates with orientation relationships (ORs) of ([Formula: see text]0)β // (1[Formula: see text]00)α, [[Formula: see text]11]β // [11[Formula: see text]0]α, thereinto the mentioned-increase is possibly related to that the solute-vacancy clusters along {0[Formula: see text]11} plane might serve as the nucleation points of the β-prismatic precipitates.

Keywords