Sökning: "tortuous grain boundaries"

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

    Kandidat-uppsats, KTH/Materialvetenskap

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

    Sammanfattning : 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. LÄS MER