@ARTICLE{Bae_Sun-Woo_Effect_2020, author={Bae, Sun-Woo and Huynh, Xuan-Khoa and Kim, Ji-Soon}, volume={vol. 65}, number={No 3}, journal={Archives of Metallurgy and Materials}, pages={1023-1028}, howpublished={online}, year={2020}, publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences}, publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences}, abstract={In this study, Fe-40wt% TiB2 nanocomposite powders were fabricated by two different methods: (1) conventional powder metallurgical process by simple high-energy ball-milling of Fe and TiB2 elemental powders (ex-situ method) and (2) high-energy ball-milling of the powder mixture of (FeB+TiH2) followed by reaction synthesis at high temperature (in-situ method). The ex-situ powder was prepared by planetary ball-milling at 700 rpm for 2 h under an Ar-gas atmosphere. The in-situ powder was prepared under the same milling condition and heat-treated at 900oC for 2 h under flowing argon gas in a tube furnace to form TiB2 particulates through a reaction between FeB and Ti. Both Fe-TiB2 composite powder compacts were sintered by a spark-plasma sintering (SPS) process. Sintering was performed at 1150℃ for the ex-situ powder compact and at 1080℃ for the in-situ powder for 10 minutes under 50 MPa of sintering pressure and 0.1 Pa vacuum for both processes. The heating rate was 50o/min to reach the sintering temperature. Results from analysis of shrinkage and microstructural observation showed that the in-situ composite powder compacts had a homogeneous and fine microstructure compared to the ex-situ preparation, even though the sintered densities were almost the same (99.6 and 99.8% relative density, respectively).}, type={Article}, title={Effect of Fabrication Method of Fe-TiB2 Nanocomposite Powders on Spark-Plasma Sintering Behavior}, URL={http://www.czasopisma.pan.pl/Content/116376/PDF/AMM-2020-3-09-Ji-Soon%20Kim.pdf}, doi={10.24425/amm.2020.133211}, keywords={Fe-TiB2 composite, ex-situ, in-situ, iron boride, titanium hydride, high-energy ball-milling, spark-plasma sintering, densification behavior}, }