This research investigated the stre

This research investigated the strengthening mechanisms associated with the as-welded microstructure

developed during inertia friction welding of dissimilar superalloys LHSR and Mar-M247. The weld in-
terface and heat affected regions of the sample were analyzed using hardness indentation techniques

and subsequently characterized using SEM, TEM and advanced atom probe tomography. The yield

strength of the welded joint was modeled to determine the impact of the gradients in the as-welded

microstructure on strengthening mechanisms within the LSHR material. Characterization centered on

formation of γ′, γ grain size and chemical segregation within the heat affected regions. Results indicate

an increased hardness in the vicinity of the weld interface, resulting from the refined dispersion of γ′ and

γ grains.

ผลลัพธ์ (อังกฤษ) 2:

This Research investigated the strengthening Mechanisms associated with the as-welded microstructure developed during inertia of Dissimilar Friction WELDING LHSR superalloys and Mar-M247. Weld the in- Terface and heat of the sample were analyzed using AFFECTED Regions indentation hardness techniques and subsequently characterized using SEM, TEM and Atom probe Advanced Tomography. The yield strength of the welded Joint was modeled to Determine the Impact of the gradients in the as-welded microstructure on strengthening Mechanisms Within the LSHR Material. Centered on characterization of gamma Formation ', gamma Grain Size and Chemical segregation Within the heat AFFECTED Regions. Results indicate an Increased hardness in the vicinity of the Weld interface, resulting from the dispersion of refined gamma 'and gamma grains.