Atomic Simulation of Effect of Stress-Relief Annealing on the Regulation of Residual Stress in Nano-cutting of γ-TiAl Alloy

Atomic simulation of the effect of supersonic fine particle bombardment process parameters on the mechanical properties of polycrystalline γ-TiAl alloy

“…The SFs disrupt the periodicity and integrity of the crystal, resulting in enhanced local crystal energy and formation of stacking layer misenergy. This is similar to the phenomenon of residual tensile stress found in the literature [42]. As shown in figures 10(d)-(f), as the particle radius increases, the kinetic energy of the particles increases and the material is subjected to greater loading forces resulting in a large amount of heat.…”

“…We obtain the average hydrostatic pressure by considering atoms of 1 nm thickness in the xy plane, representing the residual stress at that depth. Hydrostatic stress given by expression ( 6) [42], where σ hy represents the hydrostatic stress, i is the atomic number, and σ xx , σ yy , and σ zz are the stress components in the three orthogonal directions of the atom, respectively. As shown in figures 10(a)-(c), the residual stress distributions in the xy plane for particle radius of 3.5 nm, 4.0 nm, and 4.5 nm, are shown, respectively.…”

A Review of the State of Art of Fabrication Technologies of Titanium Aluminide (Ti-Al) Based on US Patents

“…Fortunately, with the increasing industrial demand for titanium aluminide (Ti-Al) alloys [5,6], there is a unique opportunity to develop advanced materials that offer exceptional engineering properties suitable for a wide array of commercial jet engines [7,8] that are also suitable for automobile engines [9,10], but most target applications in this article still will be emphasized in the aircraft industry field. Ti-Al, also referred to as a titanium aluminide intermetallic compound, encompasses TiAl 2 , TiAl 3 , α 2 -Ti 3 Al [11][12][13], and γ-TiAl, as demonstrated in Figure 1, which presents the Ti-Al phase diagram.…”