Characterization investigations during mechanical alloying and sintering of Ni–W solid solution alloys dispersed with WC and Y2O3 particles

Microstructural and morphological evaluation of MCrAlY/YSZ composite produced by mechanical alloying method

“…In fact, ␥-phase peaks become shorter and broader with increasing milling time. The broadening is because of grain refinement, an increase in lattice defects such as dislocations and vacancies and an increase in internal strain of crystal lattice [20][21][22]. In the first stage of milling, severe plastic deformation is localized into shear bands consisting of an array of dislocations with high density [23].…”

Fabrication and characterization of Ni–W solid solution alloys via mechanical alloying and pressureless sintering

“…There have been quite a number of studies which reported that the addition of solid solution W atoms into electrodeposited Ni thin films resulting in significant enhancements on the mechanical, tribological and chemical properties [4][5][6][7][8]. Fabrication of Ni-W solid solution alloys using MA technique is less studied compared to electrodeposition [9][10][11][12][13][14] and only non-equilibrium compositions (i.e. 15 at.% W or higher) were investigated in these studies.…”

“…Nasu et al [12] compared the structural features of the electrodeposited and MA'd Ni- (16.0, 20.7, 22.5 at.%) W alloys and indicated that the structures of MA'd Ni-W alloys have similarities with those of the electrodeposited alloys, however the mechanically alloyed Ni-W powders are consist of three components: the Ni, W and Ni 4 W phases. Currently, there exists only a few investigations regarding the fabrication of Ni-W alloys by mechanical alloying and sintering [10,14]. Mi and Courtney [10] investigated the properties of Ni-W alloys with the W compositions varying between 20.9 at.% and 80.5 at.% fabricated by mechanical alloying and hot-isostatic pressing.…”

Physical Properties and Microstructural Characterization of Mechanically Alloyed and Sintered W-2wt%B4C-xwt%C (x=0, 0.25, 0.5, 1) Composites

“…With a density of 19.25 g/cm 3 , W is also among the heaviest metals. W matrix composites reinforced with carbide, boride, and oxide particles are quite attractive for different structural applications and for some nuclear applications at high temperatures and at severe service conditions [1][2][3][4][5][6].…”