Essays about: "ti c"

Showing result 21 - 25 of 42 essays containing the words ti c.

  1. 21. 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

  3. 22. Simulation of Gradient Formation in Cemented Carbides

    University essay from KTH/Materialvetenskap

    Author : Armin Salmasi; [2016]
    Keywords : Cemented Carbides; Gradient; Simulation;

    Abstract : The aim of the present work is to study the formation of the cubic carbide phase (gamma phase) free gradient zone and the gamma cone structure at the edges of gradient sintered cemented carbides. Four types of cemented carbides; WCTi(C,N)-Co, WC-Ti(C,N)-Ni, WC-Ti(C,N)-Fe, WC-(Ti,Ta,NB)(C,N)-Co were gradient sintered and the thicknesses of the gradients were measured. READ MORE

  4. 23. Conservation assessments of Văcărești urban wetland in Bucharest (Romania) : land cover and climate changes from 2000 to 2015

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Luana Andreea Simion; [2016]
    Keywords : land cover types; climate change; Physical Geography and Ecosystem Analysis; urban wetland; biodiversity; protection and preservation; Earth and Environmental Sciences;

    Abstract : Văcărești Urban Wetland, a recently instituted nature park, is situated in Bucharest (Romania). It has been established over the last 27 years within an abandoned retention polder, built during the communist era. READ MORE

  5. 24. Investigation of the Cr solubility in the MC phase where M = Ti, Ta

    University essay from Uppsala universitet/Strukturkemi; Uppsala universitet/Oorganisk kemi

    Author : Anna Ehrenborg; [2016]
    Keywords : cubic carbides; Cr solubility;

    Abstract : In this work the chromium solubility in MC, and M in Cr3C2 and Cr7C3 carbides in the Ti-Cr-C and Ta-Cr-C system have been examined experimentally. Special attention is given to the cubic MC phase due to its frequent use in industrial cemented carbides. READ MORE

  6. 25. Compositional Systematics of Sphalerites from Western Bergslagen, Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Aristeidis Kritikos; [2016]
    Keywords : Western Bergslagen; sphalerite; critical elements; trace elements; substitution mechanisms; EMPA; LA-ICP-MS; Västra Bergslagen; zinkblände; kritiska metaller; spårelement; substitutionsmekanismer; EMPA; LA-ICP-MS;

    Abstract : Sphalerite is, apart from being the main global source of zinc (Zn), also one of the main source for the critical elements indium (In), gallium (Ga) and germanium (Ge), which can be extracted as by-products during Zn mining. In the westernmost part of the Palaeoproterozoic Bergslagen ore province, Sweden, In-anomalies have been reported from sulphide mineralizations. READ MORE