Lightweight Ti-based bulk metallic glasses with superior thermoplastic formability

The poor thermoplastic formability greatly restrains the wide application of Ti-based bulk metallic glasses. In this study, the thermoplastic formability of Ti-Zr-Be BMG has been dramatically improved by alloying method. The representative Ti41Zr25Be28Fe6 alloy exhibits a wide supercooled liquid region of ∼123 K and low viscosity of ∼106 Pa s in its supercooled liquid region, resulting in the best thermoplastic formability among all the developed Ti-based BMGs. Nanorods arrays can be successfully fabricated even in air with the help of a wetting layer. Moreover, the good glass-forming ability and excellent mechanical properties also make it applicable as engineering materials.