Abstract
Ti-based bulk metallic glasses (BMGs) are very attractive for applications because of their excellent properties such as high specific strength and high corrosion resistance. In this paper, we briefly review the current status of the research and development of Ti-based bulk metallic glasses. Emphasis is laid on glass-forming ability, mechanical properties, corrosion resistance, and biocompatibility.
Highlights
Metallic glasses are alloys which possess disordered atomic-scale structure and contain short- to medium-range ordered clusters
We summarize the details of the developments on the glass-forming ability, mechanical properties, corrosion resistance, and biocompatibility of Ti-based bulk metallic glass (BMG)
In order to improve the glass-forming ability (GFA) of these binary alloys and obtain Ti-based BMGs, different alloying elements have been added to the binary alloys to explore multicomponent Ti-based bulk metallic glass-forming alloy systems
Summary
Metallic glasses are alloys which possess disordered atomic-scale structure and contain short- to medium-range ordered clusters. In the 1970s and 1980s, metallic glasses could be directly made in bulk form by solidifying the melt at relatively low cooling rates (typically 103 K/s or less), where “bulk” is defined as that the minimum dimension of the alloy sample exceeds 1 mm. In 1974, the first reported bulk metallic glass (BMG) was developed in the Pd–Cu–Si alloy system by Chen et al and only φ1–2 mm glassy samples could be prepared [2]. Titanium possesses ultrahigh specific strength together with high corrosion resistance and good biocompatibility. Compared with conventional crystalline titanium alloys, Ti-based BMGs show higher specific strength and other unique properties because of the amorphous structure and are more attractive for practical applications as structural and functional materials [29,30].
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