Evaluation of defect density, microstructure, residual stress, elastic modulus, hardness and strength of laser-deposited AISI 4340 steel

Laser additive manufacturing of ultrafine TiC particle reinforced Inconel 625 based composite parts: Tailored microstructures and enhanced performance

“…Due to the high freedom of geometrical design and process manipulation, AM/3DP exhibits the outstanding capability of net-shaping user-defined three-dimensional parts having arbitrary configurations [6][7][8][9][10]. Laser metal deposition (LMD) (also known as laser engineered net shaping, LENS®), as a typical AM/3DP process combining laser cladding and rapid prototyping, has demonstrated its high feasibility in: (i) rapid manufacturing and repairing/re-manufacturing parts with complex geometries; and (ii) preparing coatings to modify surface properties of components [11][12][13][14][15]. During LMD process, a high-energy laser beam is focused onto the top surface of the work piece to create a molten pool, wherein the inert gas delivered powder is steadily injected inside through a coaxial nozzle.…”

Effects of heat treatment on microstructure and mechanical properties of Ni60/h-BN self-lubricating anti-wear composite coatings on 304 stainless steel by laser cladding

“…3 and some unknown, nanosized precipitates [19]. Due to the rapid heating and cooling of laser clad characteristics, after heat treatment for 2 h, the lattice distortion, dislocation density and residual stress in the coating were reduced, respectively [11,[29][30][31], the ␥-(Ni, Fe) solid solution matrix has certain soften, so the hardness of the ␥-(Ni, Fe) solid solution of the coating after heat treatment for 2 h is minimum. Fig.…”

Particle in-flight behavior and its determining the microstructure and mechanical properties of zirconia based thermal barrier coatings

“…wear, fatigue, and high temperatures) [22,23]. The current study claimed that the indentation test was essentially a localphase-dependent method and markedly influenced by surface toughness of the samples [24].…”