Accessible Unlicensed Requires Authentication Published by De Gruyter November 5, 2021

The effect of V on the morphology of TiB2 particles in as-cast aluminum composites

Jing Sun, Fei Wang, Yuwen Liu, Lijie Guo and Haowei Wang


This study presents the modification effect of trace vanadium on the in-situ formed TiB2 particles in as-cast aluminum composites. With 0.2 wt.% V addition the morphology of TiB2 was modified from hexagonal platelet or irregular feather-like shape to hexagonal prism or rectangular prism with parallel growth steps along the c-axis. Meanwhile, V rich cores were detected in the center of TiB2 and the exposure of the high-index crystal plane (1101)TiB2 was detected in Al-0.2 wt.%V. Statistical analysis of the particle size and aspect distribution both in commercial Al and Al-0.2 wt.%V was conducted. The elemental distribution and scanning electron microscopy investigation revealed that VB2 may serve as the 2D-nucleus of TiB2 particles. The growth mechanism of TiB2 under the influence of V was explored.

Miss Jing Sun Shanghai Aerospace Equipment Manufacturer Limited Company 100 Huaning Road Minhang District Shanghai P. R. China Tel.: +86-21-24187153 Fax: +86-21-64300107


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Received: 2021-04-21
Accepted: 2021-08-03
Published Online: 2021-11-05

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