Microstructure and wear resistance of solidified TiB2-based composites for cutting tools achieved by SHS in high-gravity field

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Zhang, J.^1 ; Pan, C.Z.^1 ; Zhu, B.^1

Army Engineering University, 97 Heping west road, Shijiazhuang

050003, China^1

关键词: Fine-grained microstructure;    High-gravity field;    Inclusion particles;    Key factors;    Thermites;    Wear properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022050/pdf
DOI  :  10.1088/1757-899X/382/2/022050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

TiB2-based composites were fabricated by taking SHS with the blends of (B4C+Ti) and thermite in high-gravity field. XRD, FESEM and EDAX results showed that the composites mainly were consisted of fine plate-like TiB2, irregular TiC and (Cr,Ti)3B2 solids and Al2O3 inclusion particles. The introduction of high-gravity field brought about pure Ti-Cr-B-C liquid, whereas rapid solidification was a key factor for the achievement of fine-grained microstructures, which in turn was responsible for the much improved wear properties of the composites.