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

被引：20

作者：

Chmielewski, Marcin ^{[1
]}

Nosewicz, Szymon ^{[2
]}

Kurpaska, Lukasz ^{[3
]}

Romelczyk, Barbara ^{[4
]}

机构：

[1] Inst Elect Mat Technol, 133 Wolczynska Str, PL-01919 Warsaw, Poland

[2] Polish Acad Sci, Inst Fundamental Technol Res, 5B Pawinskiego Str, PL-02106 Warsaw, Poland

[3] Natl Ctr Nucl Res, 7 A Soltana Str, PL-05400 Otwock, Poland

[4] Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska Str, PL-02507 Warsaw, Poland

来源：

COMPOSITES PART B-ENGINEERING | 2016年 / 98卷

关键词：

Metal-matrix composites (MMCs); Mechanical properties; Mechanical testing; Sintering; CHROMIUM-ALUMINA COMPOSITES; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.compositesb.2016.04.065

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

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 degrees 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. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：88 / 96

页数：9

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