The cyclic oxidation resistance at 900 °C of the alloy 718 produced by laser beam melting and electron was compared to that wrought-718 alloy. Results showed large differences regarding rate oxide layer spallation. wrought presents much more adherent scale. Moreover, standard heat treatment surface grinding slightly delay catastrophic role sulfur manganese on adhesion scale is quantitatively di...

INHIBITION AND STRUCTURE OF TOXOPLASMA GONDII PURINE 1 NUCLEOSIDE PHOSPHORYLASE 2 3 4 Running title: Toxoplasma gondii purine nucleoside phosphorylase 5 6 Teraya M. Donaldson, María B. Cassera, Meng-Chiao Ho, Chenyang Zhan, 7 Emilio F. Merino, Gary B. Evans, Peter C. Tyler, Steven C. Almo, Vern L. 8 Schramm, and Kami Kim d, # 9 10 From the Departments of Microbiology and Immunology, Biochemistr...

INHIBITION AND STRUCTURE OF TOXOPLASMA GONDII PURINE 1 NUCLEOSIDE PHOSPHORYLASE 2 3 4 Running title: Toxoplasma gondii purine nucleoside phosphorylase 5 6 Teraya M. Donaldson, María B. Cassera, Meng-Chiao Ho, Chenyang Zhan, 7 Emilio F. Merino, Gary B. Evans, Peter C. Tyler, Steven C. Almo, Vern L. 8 Schramm, and Kami Kim d, # 9 10 From the Departments of Microbiology and Immunology, Biochemistr...

The as-cast alloy 718 shows a multiphasic structure which consists of dendrites, carbides and Laves phases. The amount, size, shape, and dispersion of these phases affect the properties and the processing which follows, This structure was characterized by measurements of volume fraction, size, dispersion, and shape factor of carbide and Laves phases. Secondary arm spacing and Vickers hardness w...

Inconel 718 is a Ni-Cr-Fe superalloy which presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These characteristics can be optimized with an appropriate control of microstructural features such as grain size and precipitation. Precipitates of different nature can form in these alloys, i.e. γ’’ (a metastable metallic compound Ni3N...

The overall objective of this work has been to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the nickelbased superalloy Inconel 718. The fatigue crack propagation behaviour under high temperature hold times has been studied. Firstly, the main fatigue crack propagation phenomena have been investigated with the aim of setting up a basi...

Additive manufacturing (AM) by laser powder bed fusion (LPBF) has gained significant research attention to fabricate complex 3D Inconel alloy components for jet engines. The strategic advantages of LPBF-based AM aerospace applications are well reported. exposed a high degree vibration during the operation in variable aqueous environment. combined and environment create tribological condition th...

Abstract Inconel 718, a nickel, chrome and iron alloy, has special advantages, such as high-temperature strength, thermal resistance corrosion resistance, which facilitate wide usage in the aerospace industry, especially hot sections of gas turbine engines. However, machining this alloy is correlated closely with material’s inherent properties excellent combination hardness toughness, low condu...