Journal
MATERIALS & DESIGN
Volume 85, Issue -, Pages 564-573Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.07.032
Keywords
Ti-based alloys; Bulk metallic glasses; Glass forming ability; Mechanical properties; Thermal stability
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Funding
- National Natural Science Foundation of China (NSFC) [51271095]
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The glass-forming ability (GFA) of Ti-Zr-Be ternary alloys is dramatically improved by partially replacing Be with Ni. Centimeter-scale fully amorphous samples can be obtained in a wide Ni content range of 4 at 6-12 at.%. In particular, some of the developed Ti-Zr-Be-Ni alloys exhibit a critical diameter up to 20 mm, which is larger than that of other quaternary Ti-based bulk metallic glasses (BMGs). Moreover, Ni addition also enhances the yield strength and compressive plastic strain of Ti-Zr-Be alloys obviously. Based on the experimental results, the effect of substituting elements addition on the glass-forming ability ofTi-Zr-Be alloys has been systematically investigated and an empirical composition design method for the development of novel Ti-based BMGs with large CFA has been proposed. (C) 2015 Elsevier Ltd. All rights reserved.
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