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DC Field | Value | Language |
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dc.contributor.author | Karak, S K | - |
dc.contributor.author | Samataray, R | - |
dc.contributor.author | Dąbrowski, F | - |
dc.contributor.author | Ciupinski, L | - |
dc.date.accessioned | 2016-07-21T05:12:24Z | - |
dc.date.available | 2016-07-21T05:12:24Z | - |
dc.date.issued | 2016-07 | - |
dc.identifier.citation | 23rd International Symposium on Metastable, Amorphous and Nanostructured Materials(ISMANAM), Nara, Japan, 3-8 July 2016, | en_US |
dc.identifier.uri | http://hdl.handle.net/2080/2519 | - |
dc.description.abstract | 45.0Zr-30Fe-10Cr-5Cu-5.0Ni-5.0Ti (alloy A), 44.0Zr-30Fe-10Cr-5Cu-5.0Ni-5.0Ti-1.0Y2O3 (alloy B), 45.0Zr-25Fe-10Cr-10Cu-5.0Ni-5.0Ti (alloy C) and 44.0Zr-25Fe-10Cr-10Cu-5.0Ni-5.0Ti- 1.0Y2O3 (alloy D) alloys (all in wt %) by solid state mechanical alloying route and consolidation the milled powder by pulse plasma sintering [1] (PPS) at 1173 K (900°C), 1223 K (950°C) and 1273 K (1000°C) using 75 MPa uniaxial pressure applied for 5 min and 70 kA pulse current at 3 Hz pulse frequency. Subsequently, an extensive effort has been undertaken to characterize the microstructural and phase evolution by X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM/TEM) and energy dispersive spectroscopy (EDS). Mechanical properties including hardness, compressive strength, Young’s modulus and fracture toughness were determined using micro/nano-indentation unit and universal testing machine. The density of the alloys increases with increasing sintering temperature and shows maximum at 1000C temperature. Similar kind of trends has been found in hardness measurements. The maximum hardness found in alloy C sintered at 1000C (9.5 GPa) and minimum in alloy A sintered at 900C (4.5 GPa). Besides superior mechanical strength, the novelty of these alloys lie in the unique microstructure comprising uniform distribution of either nanomertic (100 nm) oxide (Y2O3) particles Zr- Fe matrix useful for grain boundary pinning and creep resistance. Fig. 1 shows the microstructure of alloy A sintered at 1000C by PPS method predicts multimodal grain structure with larger grain size of 5m to smaller grain size of 300nm. This also evident that there is very less porosity (0.25 %) of the sample sintered at higher sintering temperature. | en_US |
dc.subject | Nano-Y2O3 | en_US |
dc.subject | Zr-Fe Alloys | en_US |
dc.subject | Mechanical Alloying | en_US |
dc.subject | Pulse Plasma Sinteri | en_US |
dc.subject | Synthesis | en_US |
dc.title | Synthesis and Characterization of Nano-Y2O3 Dispersed Zr-Fe Alloys by Mechanical Alloying and Pulse Plasma Sintering | en_US |
dc.type | Presentation | en_US |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
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2016_ISMANAM_SKKarak_Synthesis.pdf | 11.52 MB | Adobe PDF | View/Open |
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