Essays about: "Ni-based alloy"

Showing result 1 - 5 of 6 essays containing the words Ni-based alloy.

  1. 1. Self-Lubricating Properties of Laser Claddings for High Temperature Forming Processes

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Tugce Caykara; [2018]
    Keywords : self-lubricating; steel; aluminium; friction; wear; high temperature; hot forming;

    Abstract : This thesis summarizes the work done on tribological characterization of multifunctional hardfacing coatings with self-lubricating properties, intended for use in mechanical components operating in high temperature applications for which conventional lubricants are no longer effective. Deposition techniques like laser cladding have a great potential in reworking/repair of high value industrial components in order to extend their lifetime. READ MORE

  3. 2. Design of cemented carbide with Ni-based superalloy binder strengthened with y’-Ni3Al precipitates

    University essay from KTH/Materialvetenskap

    Author : Oscar Edholm; [2018]
    Keywords : Cemented Carbide; Super alloy; Ni-alloy; Ni-Super alloy; Superalloy; Ni3Al; NiAl; Gamma Prime; Gamma; Precipitates; Ni3Al Precipitates; Master Alloy; Liquid Phase Sintering; Cementerad karbid; Hårdmetall; Superlegering; Ni-legering; Ni-Superlegering; Superalloy; Ni3Al; NiAl; Gamma Prim; Gamma; Precipitates; Ni3Al Precipitates; Mästerlegering; Utfällning;

    Abstract : Replacement of cobalt in cemented carbides has gained in attention recently because threats of regulations due to health issues (cancerogenic effect), increased demand from the electric vehicle industry and the questionable extraction from countries like Democratic Republic of Congo. In this report the use of Ni-based binder as an alternative binder for cemented carbides has been explored. READ MORE

  4. 3. Development of method for processing brittle-hard materials using Laser Metal Deposition (LMD)

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Alejandro Simó Vesperinas; [2018]
    Keywords : Additive Manufacturing AM ; Laser Metal Deposition LMD ; Direct Metal Deposition DMD ; High-temperature materials; Mo-Si-B alloy; Residual stress; Cracks;

    Abstract : New materials capable of operating at ultra-high temperatures in gas turbine engines are highly desired. Materials such as silicides of refractory metals present great potential to substitute single crystal nickel-based superalloys. READ MORE

  5. 4. Tribological studies on multifunctional hardfacings for friction control at high temperatures

    University essay from Luleå tekniska universitet/Maskinelement

    Author : Todor Vuchkov; [2017]
    Keywords : high temperature tribology; laser cladding; solid lubricants;

    Abstract : Mechanical components operating at elevated temperatures can be identified in the aerospace industry as well as in metal forming. Hot stamping is a metal forming technique utilized for manufacturing high strength lightweight components for the automotive industry. READ MORE

  6. 5. Investigation of Ductility Dip at 1000˚C in Alloy 617

    University essay from KTH/Materialvetenskap

    Author : Julia Sjöström; Helena Åkesson; [2017]
    Keywords : Ductility dip cracking; Ni-based alloy; tortuous grain boundaries; intergranular precipitates; grain boundary migration; superalloy; M23C6; Ti N; C ; solid state cracking; dynamic recrystallization;

    Abstract : Alloy 617 displays a ductility dip during straining at exactly 1000˚C, leading to brittle fracture. A sudden decrease in ductility appearing during Gleeble hot ductility tests of Ni-based superalloys is a well-known phenomenon, while its cause is unknown. READ MORE