Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 18, Issue -, Pages 1834-1841Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2022.03.076
Keywords
Bulk metallic glass; Composites; Martensitic transformation; Work-hardening ability; Composition design
Funding
- National Natural Science Foun-dation of China [52074257]
- key scientific research projects in universities of Henan Province [22A140014, 22B430004]
- Scientific Research Cultivation Project Foundation of Anyang Normal University [AYNUKPY-2020-17]
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Composition design in the field of Ti-based in-situ dendrite reinforced bulk metallic glass composites has been a great challenge. This study proposes a simple and effective strategy to tailor the dendrite composition and volume fraction using Ti-6Al-4V alloy, and successfully prepares a series of in-situ dendrite reinforced BMGCs based on this strategy.
Up to now, the composition design in the field of Ti-based in-situ dendrite reinforced bulk metallic glass composites (BMGCs) has been a great challenge. In this work, a simple but effective strategy is proposed to tailor the dendrite composition and volume fraction by using conventional Titanium alloy Ti-6Al-4V, and a series of in-situ dendrite reinforced BMGCs (Z1-Z4) are prepared based on it. The dendrite volume fraction can be adjusted by changing the proportion of the Titanium alloy Ti-6Al-4V, while the compositions of the dendrites are highly correlated with Ti-6Al-4V. In these alloys, with the increase of the mass percent of the added Titanium alloy Ti-6Al-4V, the volume fraction of the dendrite phase increases monotonically from Z1 to Z4 alloy. Z1 alloy behaves like a BMG with a high yield strength and limited plasticity due to its small dendrite size. Z2-Z4 alloys show excellent plasticity and significant work-hardening ability, because the dendrite size is appropriate and the dendrites undergo stress-induced martensite transformation during compression. From Z2 to Z4 alloy, with the increase of dendrite volume fraction from 56% to 78%, the yield strength does not decrease, which is due to the gradually enhanced stability of the dendrites. This composition design strategy is effective and universal, which can provide a new perspective for the composition design and development of TiZrbased in-situ dendrite reinforced BMGCs. (c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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