Synthesis of Ti/TiB Composites via Hydrogen-Assisted Blended Elemental Powder Metallurgy

Microstructural Characteristics of Ti‐Based Composites with Various Ceramic Reinforcements Manufactured via Hydrogen‐Assisted Blended Elemental Powder Metallurgy

“…In our earlier studies, a higher total content of TiB also resulted in a higher porosity. [ 35 ] On the other hand, the remnants of partially reacted equiaxed TiB 2 particles and intermediate boride products [ 37 ] observed in composites with TiB 2 ‐L‐type particles after the first sintering stage (Figure 3) revealed that the completion of the in situ TiB 2 → TiB reaction required either a noticeable change of the processing parameters or additional technological operations, especially at a relatively large size of the raw TiB 2 powder.…”

“…[33,34] As an advanced method to produce nearly dense Ti/TiB MMCs with evenly distributed TiB reinforcements, a two-stage hydrogen-assisted press-and-sinter powder approach was described by our earlier study. [35] In this method, hydrogenated powders were used in both sintering cycles for dual implementation of positive effect of hydrogen on the densification and purification of powder compacts. BEPM compacts based on TiH 2 powder were sintered in the first cycle.…”

In Situ Ti6Al4V/TiB Composites Prepared by Hydrogen-Assisted Sintering of Blends Containing TiH2 and Ball-Milled Ti+TiB2 Powders

“…However, these extra procedures definitely bring unwanted increase in material cost. Previous work by current authors indicates that the hydrogen-assisted 2 stage press-and-sintering route can effectively transform the porous composites into nearly dense materials without hot pressing or hot deformation operations, but doubled powder preparation, compaction and sintering procedures induce risks for material contamination with atmospheric impurities and degraded ductile properties [ 17 ].…”