259 research outputs found

    Kalendar - kongresi, simpoziji, izložbe

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    Pregled tehničke literature

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    Microstructural stability of wrought, laser and electron beam glazed NARloy-Z alloy at elevated temperatures

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    Microstructure of wrought, laser, and electron-beam glazed NARloy-Z(Cu-3 wt.% Ag-0.5 wt.% Zr) was investigated for thermal stability at elevated temperatures (539 to 760 C (1,100 to 1,400 F)) up to 94 h. Optical and scanning electron microscopy and electron probe microanalysis were employed for studying microstructural evolution and kinetics of precipitation. Grain boundary precipitation and precipitate free zones (PFZ's) were observed in the wrought alloy after exposing to temperatures above 605 C (1,120 F). The fine-grained microstructure observed in the laser and electron-beam glazed NARloy-Z was much more stable at elevated temperatures. Microstructural changes correlated well with hardness measurements

    TehnoloŔke zabiljeŔke

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    Pregled tehničke literature

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    Pregled tehničke literature

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    TehnoloŔke zabiljeŔke

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    TehnoloŔke zabiljeŔke

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    Pregled tehničke literature

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