scholarly journals Influence of ZrB2 on Microstructure and Properties of Steel Matrix Composites Prepared by Spark Plasma Sintering

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2459 ◽  
Author(s):  
Iwona Sulima ◽  
Pawel Hyjek ◽  
Lucyna Jaworska ◽  
Malgorzata Perek-Nowak

In this study, four composites with different ZrB2 content were made by the Spark Plasma Sintering (SPS/FAST) technique. The sintering process was carried out at 1373 K for 5 min under an argon atmosphere. The effect of ZrB2 reinforcing phase content on the density, microstructure, and mechanical and tribological properties of composites was investigated. The results were compared with experimental data obtained for 316L austenitic stainless steel without the reinforcing phase. The results showed that the ZrB2 content significantly affected the tested properties. With the increasing content of the ZrB2 reinforcing phase, there was an increase in the Young’s modulus and hardness and an improvement in the abrasive wear resistance of sintered composites. In all composites, new fine precipitates were formed and distributed in the steel matrix and along the grain boundaries. Microstructural analysis (Scanning Electron Microscopy (SEM), Wavelength Dispersive Spectroscopy (WDS)) has revealed that the fine precipitates chromium contained chromium as well as boron.

2011 ◽  
Vol 672 ◽  
pp. 241-244 ◽  
Author(s):  
Gabriela Sima ◽  
Mihail Mangra ◽  
Oana Gîngu ◽  
Marius Catalin Criveanu ◽  
Bebe Adrian Olei

The paper presents the experimental results regarding the influence of the reinforcing elements on the wear behavior of Al-matrix composites discontinuously reinforced by SiC and Graphite. This antifriction composite material is processed by Reactive Mechanically Alloyed and then by Spark Plasma Sintering technology. In order to optimize the processing technology, especially the sintering parameters, the Spark Plasma Sintering process was applied because of its advantageous aspects: lower sintering temperatures, shorter sintering time and higher properties values of the sintered material vs. the corresponding ones obtained by the classical sintering route. The authors realized a comparative analysis on the wear behavior of the researched composite materials.


2018 ◽  
Vol 25 (2) ◽  
pp. 158-164
Author(s):  
Seungchan Cho ◽  
◽  
Ilguk Jo ◽  
Sang-Bok Lee ◽  
Sang-Kwan Lee ◽  
...  

2011 ◽  
Vol 49 (01) ◽  
pp. 40-45 ◽  
Author(s):  
Hyun-Kuk Park ◽  
Seung-Min Lee ◽  
Hee-Jun Youn ◽  
Ki-Sang Bang ◽  
Ik-Hyun Oh

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