High temperature tensile properties of in situ TiBw/Ti6Al4V composites with a novel network reinforcement architecture

TiB whiskers reinforced high temperature titanium Ti60 alloy composites with novel network microstructure

“…In other words, ceramic TiB whiskers are introduced into the b grain boundary, which not only overcomes the weakening effect of grain boundary at high temperatures, but also increases the strengthening effect of grain boundary [18]. In addition, the TiB whisker is grown as dowel-like structure due to its B27 structure [1], which can effectively joint the adjacent Ti60 matrix particles (Fig.…”

“…It is worth mentioning that both the strengthening effect and the toughening effect of DRTMCs were effectively improved by tailoring a novel network microstructure compared with a homogeneous microstructure in our previous work [2,18]. Moreover, the maximum service temperature of TiBw/Ti6Al4V composites was significantly increased by 150-200°C on the basis of the same tensile strength [18]. Therefore, it is significant and necessary to design and fabricate novel TiBw reinforced high temperature titanium Ti60 alloy composites with a novel network microstructure fabricated by PM process.…”

Temperature dependence of tensile properties and fracture behavior of as rolled TiB/Ti composite sheet

“…2(b), indicating that the matrix microstructure is significantly refined by rolling compared to that within the as cast composite [11]. The fine a laths are attributed to the various factors such as prior b grain size, deformation degree, cooling rate and the role of TiB whiskers [11][12][13][14][15]. Fine a laths and high density of dislocations near the TiB whisker can be clearly seen in the bright-field TEM image of the composite shown in Fig.…”

“…As it is known, one main aim to develop the TMCs is to expand the service temperature region. The effort in previous studies on tensile properties of TMCs was mainly concentrated on RT-700 1C temperature range [12][13][14]. However, published researches relative to the tensile properties of TiB/Ti composites above 700 1C are still lacking.…”

Mechanical properties of TiB/Ti-6Al-4V alloy composites fabricated by spark plasma sintering

“…However, Ti-6Al-4V alloy shows low stiffness and poor wear resistance. To further increase the strength properties and improve the stiffness and wear resistance, many researchers have studied Ti-6Al-4V alloy matrix composites (TMCs) using ceramic reinforcements, such as TiB (Gorsse, et al, 2003, Panda, et al, 2003, Giannopulos, et al, 2007, Nandwana, et al, 2012, Huang, et al, 2012, Ropars, L., et al, 2015, WC (Chen, et al, 2009), TiC (Rastegari, et al, 2013, TiAl (Decker, et al, 2016), and SiC (Sivakumar, et al, 2017).The reinforcements usually need to be stiffer and harder than the matrix and to be chemically stable. For pure titanium matrix composites, TiB is currently recognized as one of the most compatible and effective reinforcements (Ravi Chandran, et al, 2004, Moris, et al, 2007.…”