High-temperature mechanics properties of in situ TiB2p reinforced Al–Si alloy composites

Effects of CeO2 additive on the microstructure and mechanical properties of in situ TiB2/Al composite

“…At present, although advantages of the TiB 2 /Al composite produced using in situ method on mechanical properties and abrasive resistance have been widely reported in many literatures [3][4][5][6][7][8][9][10][11], when the composite with high volume fraction TiB 2 is produced, TiB 2 particle agglomeration is formed easily, and most of the agglomerations segregate in the grain boundary [12][13][14][15][16][17], which not only weakens the advantages of TiB 2 particles as reinforcing phase but also has detrimental factors to the properties of TiB 2 /Al composite [18]. Besides, the agglomeration of TiB 2 particles makes it much easier to produce settlement, which would result in non-uniformity distribution of the particles in matrix.…”

Nanocrystalline Al–Al2O3p and SiCp composites produced by high-energy ball milling

“…It is well known that the addition of ceramic hard particles to soft aluminum alloys increases the strength at ambient and elevated temperatures and wear resistance (Ozdemir and Onel, 2006;Gupta et al, 2006;Kaczmar et al, 2000;Chapman et al, 1999;Yi et al, 2006). A uniform reinforcement distribution in such aluminum-based composites is essential to achieving effective load-bearing capacity of reinforcement.…”

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

“…At higher temperature, the obvious increasing of contribution ratio k attributes to the significant increase in ductility of the composite (Fig. 4), which can offer more space for the transfer of dislocations [23]. In addition, due to the high thermal activation process at high temperature, the stress around TiB whiskers can be loosen by the ductile matrix, which reduces the tendency of premature fracture of TiB whiskers.…”

“…The increase in ductility of TMCs with increasing tensile temperature is essentially due to the softening of matrix [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In view of the variation of the elongations with temperature (Figs.…”

“…4). This phenomenon is due to the cracking of TiB whiskers during tension test, which will degrade the ductility [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. And Liu et al [28] have mentioned that the decrease in ductility would be due to that the matrix plastic flow can be impeded by the reinforcements.…”