We measured the anisotropic elastic constants of a lotus-type porous magnesium, which possesses cylindrical pores aligned unidirectionally. We used the combination of resonant ultrasound spectroscopy and electromagnetic acoustic resonance methods to determine a complete set of the elastic constants. The acoustic measurements revealed that lotus magnesium shows hexagonal elastic symmetry with the c-axis along the longitudinal direction of the pores. Young's modulus E∥ parallel to the pore direction decreases linearly with porosity, while the normal Young's modulus E⊥ drops rapidly.
|Number of pages||3|
|Journal||Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals|
|Publication status||Published - 2003 Sept|
- Elastic constants
- Electromagnetic acoustic resonance
- Porous metals
- Resonant ultrasound spectroscopy