Effect of heat treatment on the microstructures and damping properties of biomedical Mg-Zr alloy

Ming Hung Tsai; May Show Chen; Ling Hong Lin; Ming Hong Lin; Ching Zong Wu; Keng Liang Ou; Chih Hua Yu

doi:10.1016/j.jallcom.2010.09.098

Effect of heat treatment on the microstructures and damping properties of biomedical Mg-Zr alloy

Ming Hung Tsai, May Show Chen, Ling Hong Lin, Ming Hong Lin, Ching Zong Wu, Keng Liang Ou, Chih Hua Yu

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

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 + twin_dense) → (α-Mg + twin_loose) → (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.

Original language	English
Pages (from-to)	813-819
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	3
DOIs	https://doi.org/10.1016/j.jallcom.2010.09.098
Publication status	Published - Jan 21 2011

Keywords

Damping capacity
Mg-Zr alloy
Microstructure
Twining

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
Materials Chemistry
Metals and Alloys

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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.",

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AU - Tsai, Ming Hung

AU - Chen, May Show

AU - Lin, Ling Hong

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AU - Wu, Ching Zong

AU - Ou, Keng Liang

AU - Yu, Chih Hua

PY - 2011/1/21

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AB - 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.

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