|
|||||
|
|
Effect of heat treatment on the microstructures and damping properties of biomedical Mg-Zr alloy |
|
| Authors: | Ming-Hung Tsai May-Show Chen Ling-Hung Lin Ming-Hong LinChing-Zong Wu Keng-Liang Ou Chih-Hua Yu |
| Affiliation: | a Department of Mechanical Engineering and Graduate Institute of Mechanical and Precision Engineering, National Kaoshiung University of Applied Sciences, Kaoshiung 807, Taiwan b Department of Dentistry, Chang Yin dental clinic, No.46-1, Yangming St., Banqiao City, Taipei County 220, Taiwan c Research Center for Biomedical Devices, Taipei Medical University, Taipei 110, Taiwan d School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan e Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan f School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan g Graduated Institute of Biomedical Materials and Engineering, Taipei Medical University, Taipei 110, Taiwan h Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan |
| Abstract: | In this study, we elucidated the effect of heat treatment on the microstructures and damping properties of the biomedical Mg-1 wt% Zr (K1) alloy by optical microscopy, transmission electron microscopy, energy-dispersive X-ray spectrometry, and experimental model analysis. The following microstructural transformation occurred when the as-quenched (AQ, i.e., solution heat treated and quenched) K1 alloy was subjected to aging treatment in the temperature range 200-500 °C: α-Mg → (α-Mg + twindense) → (α-Mg + twinloose) → (α-Mg + α-Zr). This microstructural transformation was accompanied by variations in the damping capacity. The damping properties of the AQ K1 alloy subjected to aging treatment at 300 °C for 16 h were the best among those of the alloys investigated in the present study. The presence of twin structures in the alloy matrix was thought to play a crucial role in increasing the damping capacity of the K1 alloy. Hence, we state that a combination of solution treatment and aging is an effective means of improving the damping capacity of biomedical K1 alloys. |
| Keywords: | Mg-Zr alloy Microstructure Twining Damping capacity |
| 本文献已被 ScienceDirect 等数据库收录！ | |