Effects of sintering parameters on the microstructure and tensile properties of in situ TiBw/Ti6Al4V composites with a novel network architecture

Effect of starting material character and its sintering temperature on microstructure and mechanical properties of super hard Ti/TiB metal matrix composites

“…Similar densities and coefficient of linear thermal expansion of titanium to TiB ceramic reinforcement also show best estimation for high temperature applications. A relatively uniform distribution of the reinforcement in the Ti matrix can be achieved, however, TiB whiskers tend to form clusters in localized areas, and this microstructural feature has a significant impact on mechanical properties as heat treatment or extrusion condition [13][14][15][16]. In this study Ti/TiB MMC was fabricated by traditional powder metallurgical approach, cold compaction and sintering.…”

Effects of in-situ formed TiB whiskers on microstructure and mechanical properties of spark plasma sintered Ti–B4C and Ti–TiB2 composites

“…It seems that the strengthening mechanisms of Ti-TiB 2 system may mainly be attributed to two aspects: direct contributions due to the load transfer from titanium onto TiB 2 reinforcements and indirect contributions due to morphological changes of the composite resulting from the in-situ formation of TiB whiskers, such as grain re nement, solid solution strengthening, geometrically increased density of dislocations, and strengthening due to thermal incompatibilities of the matrix and reinforcements [30][31][32][33].…”

Effects of extrusion on microstructure and tensile properties of 3D network structured TiBw/Ti60 composites fabricated by reaction hot pressing

“…TMCs can be divided into the continuous fiber reinforced titanium matrix composites (CRTMCs) and the discontinuous particle and/or whisker reinforced titanium matrix composites (DRTMCs) [10,11]. Compared with CRTMCs, DRTMCs possess isotropic behavior, ease of fabrication and low cost.…”

“…Especially, TiB whiskers (TiBw) reinforced titanium matrix composites (TiBw/Ti composites) fabricated by in situ methods are sought-after due to superior properties and low cost [12,13]. Moreover, TiB whiskers are regarded as one of the best reinforcements for the titanium matrix composites due to their excellent properties including high modulus, good chemical compatibility, similar density and thermal expansion coefficient to titanium matrix [10,14,15]. At present, the preparation methods of TiBw/Ti composites have included spark plasma sintering [16], solidification [17], self propagating synthesis [17,18], ingot metallurgy [19,20] and power metallurgy (PM) [10,13], etc.…”

“…Moreover, TiB whiskers are regarded as one of the best reinforcements for the titanium matrix composites due to their excellent properties including high modulus, good chemical compatibility, similar density and thermal expansion coefficient to titanium matrix [10,14,15]. At present, the preparation methods of TiBw/Ti composites have included spark plasma sintering [16], solidification [17], self propagating synthesis [17,18], ingot metallurgy [19,20] and power metallurgy (PM) [10,13], etc. Compared with other methods, reaction hot pressing method (RHP), a subtype of PM, exhibited excellent technique advantages to fabricate TMCs largely due to its ability for microstructural control, simplicity, and economic benefit [21].…”