Consolidation Behavior of Cu-Zr-Al Metallic Glass Powder by Spark Plasma Sintering

2010 ◽  
Vol 654-656 ◽  
pp. 1086-1089 ◽  
Author(s):  
Guo Qiang Xie ◽  
Dmitri V. Louzguine-Luzgin ◽  
Mikio Fukuhara ◽  
Hisamichi Kimura ◽  
Akihisa Inoue
Keyword(s):  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Glassy Alloy ◽  
High Strength ◽  
Alloy System ◽  
Full Density ◽  
Large Size ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Consolidation Behavior

We investigated consolidation behavior of gas-atomized Cu50Zr45Al5 metallic glassy alloy powders by a spark plasma sintering (SPS) process. Density of the sintered samples increased with an increase in sintering temperature. The nearly full density samples without crystallization could be attained by the SPS process at sintering temperature of 693 K under pressure of 600 MPa. The produced samples exhibited high-strength and met large-size requirement. The SPS process makes it possible to fabricate the large-size bulk metallic glasses without limitation of dimensions and alloy system.

Microstructure and Mechanical Properties of Spark-Plasma-Sintered SiC-TiC Composites

2005 ◽  
Vol 287 ◽  
pp. 335-339 ◽  
Author(s):  
Kyeong Sik Cho ◽  
Kwang Soon Lee
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Heating Rate ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Applied Pressure ◽  
Argon Atmosphere ◽  
Full Density ◽  
Plasma Sintering ◽  
Spark Plasma

Rapid densification of the SiC-10, 20, 30, 40wt% TiC powder with Al, B and C additives was carried out by spark plasma sintering (SPS). In the present SPS process, the heating rate and applied pressure were kept at 100°C/min and at 40 MPa, while the sintering temperature varied from 1600-1800°C in an argon atmosphere. The full density of SiC-TiC composites was achieved at a temperature above 1800°C by spark plasma sintering. The 3C phase of SiC in the composites was transformed to 6H and 4H by increasing the process temperature and the TiC content. By tailoring the microstructure of the spark-plasma-sintered SiC-TiC composites, their toughness could be maintained without a notable reduction in strength. The strength of 720 MPa and the fracture toughness of 6.3 MPa·m1/2 were obtained in the SiC-40wt% TiC composite prepared at 1800°C for 20 min.

Dual phase metallic glassy composites with large-size and ultra-high strength fabricated by spark plasma sintering

2009 ◽  
Vol 17 (7) ◽  
pp. 512-516 ◽  
Author(s):  
Guoqiang Xie ◽  
Dmitri V. Louzguine-Luzgin ◽  
Li Song ◽  
Hisamichi Kimura ◽  
Akihisa Inoue
Keyword(s):  
Spark Plasma Sintering ◽  
High Strength ◽  
Dual Phase ◽  
Large Size ◽  
Plasma Sintering ◽  
Spark Plasma

Bulk Metallic Glassy Composites with Excellent Electrical Conductivity and Enhanced Plasticity Fabricated by Spark Plasma Sintering

2011 ◽  
Vol 675-677 ◽  
pp. 197-200 ◽  
Author(s):  
Guo Qiang Xie ◽  
Dmitri V. Louzguine-Luzgin ◽  
Mikio Fukuhara ◽  
Akihisa Inoue
Keyword(s):  
Electrical Conductivity ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Spark Plasma Sintering ◽  
High Strength ◽  
Structural Materials ◽  
Large Size ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Composite Samples

Large-size Ni-based bulk metallic glass (BMG) composite samples exhibiting simultaneously high strength, enhanced plasticity and improved conductivity were produced by spark plasma sintering of mixed glassy powder blended with high-conductive Cu particulates. This opens new possibilities for the applications of the BMG composites as functional and structural materials.

Ti-Based Bulk Metallic Glass Composites Produced by Spark Plasma Sintering

2013 ◽  
Vol 750 ◽  
pp. 52-55 ◽  
Author(s):  
Guo Qiang Xie ◽  
Sheng Li Zhu ◽  
Feng Xiang Qin
Keyword(s):  
Spark Plasma Sintering ◽  
Metallic Glasses ◽  
Toxic Elements ◽  
High Strength ◽  
Mixed Powder ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
Large Size ◽  
Plasma Sintering ◽  
Spark Plasma

Using gas-atomized Ti-based metallic glassy powder, or the mixed powder blended with hydroxyapatite (HA) powder, we produced Ti-based bulk metallic glasses (BMGs) and the composites with high strength and satisfying large size requirements by a spark plasma sintering (SPS) process. The Ti-based BMGs and the composites with excellent properties and without toxic elements make it possible to apply as biomedical materials.

Cu Particulates Dispersed Bulk Metallic Glass Composites with High Strength and High Electrical Conductivity Fabricated by Spark Plasma Sintering

2014 ◽  
Vol 783-786 ◽  
pp. 1961-1966
Author(s):  
Guo Qiang Xie ◽  
Feng Xiang Qin ◽  
Hisamichi Kimura
Keyword(s):  
Electrical Conductivity ◽  
Spark Plasma Sintering ◽  
Glassy Alloy ◽  
High Strength ◽  
Sintering Process ◽  
High Electrical Conductivity ◽  
Glass Composites ◽  
Glassy Alloys ◽  
Plasma Sintering ◽  
Spark Plasma

Using the mixed powders containing gas-atomized powders of metallic glassy alloys (Cu50Zr45Al5, Fe73Si7B17Nb3, Ni52.5Nb10Zr15Ti15Pt7.5) blended with high-conductive Cu particulates, we produced bulk metallic glassy alloy composites with high strength and high electrical conductivity, as well as with enhanced plasticity and satisfying large size requirements by a spark plasma sintering process. In this paper we present and review our research results on the fabrication and properties of the bulk glassy alloy composites by the spark plasma sintering process.

Spark Plasma Sintering of Al6061 and Al2124 Alloys

2011 ◽  
Vol 284-286 ◽  
pp. 1656-1660 ◽  
Author(s):  
Saheb Nouari
Keyword(s):  
Spark Plasma Sintering ◽  
Vickers Microhardness ◽  
Sintering Temperature ◽  
Full Density ◽  
Light Weight ◽  
Powder Metallurgy Technique ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Al6061 Alloy ◽  
Scanning Electron

Recently spark plasma sintering has been proven to be effective non-traditional powder metallurgy technique to sinter fully dense materials in short sintering times at relatively low sintering temperatures and without a binder or pre-compaction step. Despite the importance of aluminum based alloys as candidate materials for applications in aerospace and automotive industries because of their light weight, very little work was dedicated to spark plasma processing of these materials. In this work we explored the possibility to process Al2124 and Al6061 alloys using spark plasma sintering technique. The sample were sintered for 20 minutes at 400, 450 and 500°C using fully automated FCT system spark plasma sintering equipment. A scanning electron microscope was used to analyze the microstructure of sintered samples. The density and Vickers microhardness of the sintered samples were measured using an electronic densimeter and a digital microhardness tester respectively. The hardness and density of the spark plasma sintered samples were reported as a function of sintering temperature. It was found that full density (100 % of the theoretical density) was achieved with sintering for 20 minutes at 450°C for Al6061 alloy and at 500°C for Al2124 alloy. The density and microhardness of the sintered samples increased with the increase of sintering temperature.

Effect of spark plasma sintering temperature on structure and phase composition of Ti-Al-Nb-based alloys

2017 ◽  
Vol 59 (11-12) ◽  
pp. 1033-1036 ◽  
Author(s):  
Sherzod Kurbanbekov ◽  
Mazhyn Skakov ◽  
Viktor Baklanov ◽  
Batyrzhan Karakozov
Keyword(s):  
Phase Composition ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma

Effect of Spark Plasma Sintering on the Microstructure Evolution and Properties of M3:2 High-Speed Steel

2014 ◽  
Vol 788 ◽  
pp. 329-333
Author(s):  
Rui Zhou ◽  
Xiao Gang Diao ◽  
Jun Chen ◽  
Xiao Nan Du ◽  
Guo Ding Yuan ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
High Speed ◽  
Bending Strength ◽  
Sintering Temperature ◽  
High Speed Steel ◽  
Continuous Heating ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
The Impact

Effects of sintering temperatures on the microstructure and mechanical performance of SPS M3:2 high speed steel prepared by spark plasma sintering was studied. High speed steel sintering curve of continuous heating from ambient temperature to 1200°C was estimated to analyze the sintering processes and sintering temperature range. The sintering temperature within this range was divided into groups to investigate hardness, relative density and microstructure of M3:2 high-speed steel. Strip and quadrate carbides were observed inside the equiaxed grains. SPS sintering temperature at 900°C can lead to nearly full densification with grain size smaller than 20μm. The hardness and bending strength are higher than that of the conventionally powder metallurgy fabricated ones sintered at 1270°C. However, fracture toughness of the high speed steel is lower than that of the conventional powder metallurgy steels. This can be attributed to the shape and distribution of M6C carbides which reduce the impact toughness of high speed steels.

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