Effect of alloy elements on the morphology transformation of TiB2 particles in Al matrix

Jing Sun; Xiaobo Zhang; Yijie Zhang; Naiheng Ma; Haowei Wang

doi:10.1016/j.micron.2014.12.002

Effect of alloy elements on the morphology transformation of TiB2 particles in Al matrix

Micron. 2015 Mar:70:21-5. doi: 10.1016/j.micron.2014.12.002. Epub 2014 Dec 11.

Authors

Jing Sun¹, Xiaobo Zhang¹, Yijie Zhang², Naiheng Ma¹, Haowei Wang¹

Affiliations

¹ State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
² State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: robertzyj@sjtu.edu.cn.

PMID: 25543878
DOI: 10.1016/j.micron.2014.12.002

Abstract

To reveal the effect of alloy element on the morphology of in situ TiB2 particles, a series of TiB2 particles with various morphology were obtained via controlling synthesis process. Si and Cu can affect the morphology transformation of TiB2 particles significantly. Si preferentially adsorbed on (101¯1), (112¯0) and (12¯13¯) planes resulting in the polyhedron morphology of TiB2. Cu adsorbed on (101¯0) preferentially leading to the minimum aspect (the ratio of the diameter and thickness).

Keywords: Chamfered edges and corners; Element adsorption; Growth geometric conditions; Shape control; TiB(2) morphology.