The Influence of Deformation Mechanisms on Rupture of AZ31B Magnesium Alloy Sheet at Elevated Temperatures

Antoniswamy, Aravindha R.; Carpenter, Alexander J.; Carter, Jon T.; Hector, Louis G.; Taleff, Eric M.

doi:10.1007/978-3-319-48150-0_34

Cited by 1 publication

(2 citation statements)

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“…At 200°C temperature, the texture of orange peel is coarse and unevenly distributed with small pits. Furthermore, local microcracks and local necking phenomena [11] can be observed on the surface of the parts. When the forming temperature increases to 250°C, the texture of the orange peel gets thinner and shallower.…”

Section: Macro Analysismentioning

confidence: 99%

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Surface Quality Analysis of AZ31B Mg Alloy Sheet in Ultrasonic-Assisted Warm Single-Point Incremental Forming

Liao

Zeng

Xue

2021

Preprint

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With a view to improving the surface quality of the magnesium (Mg) alloy at a warm temperature, the ultrasonic-assisted warm single point incremental forming (SPIF) is proposed. The surface quality of the Mg alloy during the warm SPIF is primarily affected by two parts: the orange peel patterns of the non-contact surface and the scratches and adhesive wear of the contact surface. In this work, the surface quality of the AZ31B Mg alloy sheet parts at different forming temperatures and ultrasonic amplitudes is evaluated by examining the surface roughness and topography. The results show that the generation of orange peel patterns is significantly affected by temperature. In addition, scratches and adhesive wear of the contact surface increase with the rising temperature. After applying the ultrasonic vibration (UV), the quality of both the non-contact and the contact surfaces of the parts are significantly improved, but too large ultrasonic amplitude slightly reduces the surface quality. Moreover, the microstructural examination results show that UV has a great effect on dynamic recrystallization and grain refinement, which positively affects surface quality improvement.

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Section: Macro Analysismentioning

confidence: 99%

“…Davis [9] and Carter et al [10] reported that oversized grains were more likely to cause orange peel on the surface of the part. Antonyswamy et al [11] believed that the appropriate temperature and rapid strain rate play a vital role in the orange peel effect.…”

Section: Introductionmentioning

confidence: 99%