Evolution of material properties during the sintering process of Cr-Re-Al2O3 composites

Marcin Chmielewski , Szymon Nosewicz , Łukasz Kurpaska , Barbara Romelczyk

Abstract

This paper constitutes an analysis of the effect of heat treatment time on the properties of Cr-Re-Al2O3 composite materials. It was found that as a result of sintering, rhenium is dissolved in chromium to create chromium-rhenium solid solution. This process is time-dependent, therefore as the time extends, the structure of material becomes homogenous, which improves its mechanical properties. Within the frame of herein presented studies, a series of technological tests have been carried out for a constant sintering temperature (1450 °C) and pressure (30 MPa), with the use of a variable holding time in the maximum temperature. As a result, changes in the structure of Cr-Re matrix have been determined and the resulting changes in the properties of composite. Based on those tests, optimal conditions of the sintering process have been determined from the point of view of obtaining a homogenous structure and the most beneficial properties of Cr-Re-Al2O3 composites.
Author Marcin Chmielewski - Institute of Electronic Materials Technology (ITME)
Marcin Chmielewski,,
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, Szymon Nosewicz - Institute of Fundamental Technological Research Polish Academy of Sciences (IPPT PAN)
Szymon Nosewicz,,
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, Łukasz Kurpaska - National Centre for Nuclear Research, ul. A. Sołtana7, 05-400 Otwock-Świerk, Poland
Łukasz Kurpaska,,
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, Barbara Romelczyk ZPM
Barbara Romelczyk,,
- Division of Materials Design
Journal seriesComposites Part B-Engineering, ISSN 1359-8368
Issue year2016
Vol98
Pages88-96
Publication size in sheets0.5
Keywords in PolishKompozyty o osnowie metalicznej, właściwości mechaniczne, badania mechaniczne, spiekanie
Keywords in EnglishMetal-matrix composites (MMCs); Mechanical properties; Mechanical testing; Sintering
DOIDOI:10.1016/j.compositesb.2016.04.065
URL http://www.sciencedirect.com/science/article/pii/S1359836816305170
Languageen angielski
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Score (nominal)45
ScoreMinisterial score = 45.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 45.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.727 (2) - 2016=4.644 (5)
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