The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

Abstract

In this paper the influence of chemical composition to the end-properties of ceramic dispersed strengthened 316L/Y2O3 composites ceramic has been studied. Two various compositions were studied and compared to reference 316L sintered sample. These two compositions are 316L/0.33 wt% Y2O3 and 316L/1 wt% Y2O3. The high-efficient attrition milling has been used for grain size reduction and oxide distribution in the austenitic matrices. Spark Plasma Sintering (SPS) was used as fast compaction method of the milled powders in order to avoid excessive grain growth. In this work it was found that changing the chemical composition by increase of the Y2O3 addition in the composite matrix improves the milling efficiency, increases the hardness of the 316L and reduces significantly the wear rate.

Novel Alumina Dispersion-Strengthened 316L Steel Produced by Attrition Milling and Spark Plasma Sintering

“…Spots 2 and 3 in Figure 13a are the sliding layers formed by the deposited Si3N4 counterpart's debris. Similar results were observed in our previous study on the effect of the chemical composition on the final properties of ceramic dispersion-strengthened 316L/Y2O3 composites [42]. becomes larger, as can be observed in the last part of the friction coefficient curve of the 316L/1 wt% Al2O3 composite (Figure 11b).…”

“…This increase in the microhardness values was related to the addition of the harder nanosized alumina particles and to the presence of hardened particles as a result of the severe plastic deformation during the attrition milling process. Both the 316L/Al 2 O 3 composites showed lower microhardness results compared with the other composites prepared by the same process [15,16,42,43] (Figure 9).…”

“…This increase in the microhardness values was related to the addition of the harder nanosized alumina particles and to the presence of hardened particles as a result of the severe plastic deformation during the attrition milling process. Both the 316L/Al2O3 composites showed lower microhardness results compared with the other composites prepared by the same process [15,16,42,43] (Figure 9). It was proven by Chattopadhyay et al in their study on the microstructure/phase evolution in mechanical alloying/milling of stainless steel and aluminium powder blends that no considerable changes in the lattice parameters of the face-centred cube structure were observed in 316L alloys with an aluminium percentage lower than 25 wt% [41].…”

In-flight Synthesis of Nanosized ZrC Particles from Various Precursors in RF Thermal Plasma

“…In addition, these solid-state reactions result in powders with relatively large particle sizes. Hence in the case of many applications, additional milling is required, which tends to be expensive and may lead to contamination of the powder [9][10]. Several other methods have also been applied for ZrC synthesis, such as self-propagating high-temperature synthesis (SHS), pyrolysis and high energy ball milling [11][12][13][14], however, these synthesis routes yield again only submicron-sized particles.…”

Sintering Preparation of 15 wt% Cr Cast Iron as well as Its Mechanical Properties and Impact Abrasive Wear

“…High Chromium Cast Iron (HCCI) has been widely used in mining and cement industries because of its excellent wear resistance [1]. The focus of research is reducing material wear rate [2]. Some techniques have been adopted to further enhance HCCI's mechanical properties and expand its application range, such as alloying [3][4][5][6][7][8][9][10][11][12][13], modification treatment [14,15] and heat treatment [3,[16][17][18][19][20][21].…”