Effect of Sintering Temperature on the Microstructure and Properties of the Copper Synthesized by Powder Metallurgy Route

2021 ◽  
pp. 549-557
Author(s):  
Manish Dixit ◽  
Rajeev Srivastava
Keyword(s):  
Powder Metallurgy ◽  
Sintering Temperature ◽  
Microstructure And Properties ◽  
Powder Metallurgy Route

The Effect of Sintering Temperature on Microstructure and Properties of Al – SiC Composites / Wpływ Temperatury Spiekania Na Mikrostrukture I Własnosci Kompozytów Al – SiC

2013 ◽  
Vol 58 (1) ◽  
pp. 43-48 ◽  
Author(s):  
B. Leszczynska-Madej
Keyword(s):  
Powder Metallurgy ◽  
Chemical Composition ◽  
Sintering Temperature ◽  
Single Action ◽  
Microstructure And Properties ◽  
Sic Composites ◽  
Cold Pressed ◽  
Manufacturing Parameters ◽  
Rigid Die

Attempts have been made to describe the influence of sintering temperature on the microstructure and properties of Al - SiC composites. Mixtures of 100%Al and Al - 5% SiC, Al - 10% SiC were produced by tumbling for 30 minutes in the Turbula T2F mixer. The powders were subsequently cold pressed at pressure 300MPa in a rigid die on a single action press. The green compacts were sintered in nitrogen at 580°C and 620°C for one hour. The main objective of this work was to determine influence of chemical composition and the manufacturing parameters on microstructure and properties of Al - SiC composites produced by powder metallurgy technology.

Studies on Titanium Cenosphere Composite Developed by Powder Metallurgy Route

2016 ◽  
Vol 1139 ◽  
pp. 55-58 ◽  
Author(s):  
Dibyendu Dutta Majumdar ◽  
Dehi Pada Mondal ◽  
Amit Roy Chowdhury ◽  
Harish Rao ◽  
Jyotsna Dutta Majumdar
Keyword(s):  
Powder Metallurgy ◽  
Sintering Temperature ◽  
Compressive Yield Strength ◽  
Main Process ◽  
Sintered Pellet ◽  
Microstructural Investigation ◽  
Sintering Time ◽  
Property Evaluation ◽  
Powder Metallurgy Route

The present study concerns detailed microstructural investigation and property evaluation of titanium-cenosphere composite developed by powder metallurgy route. The main process variables for the development of titanium-cenosphere composite were cenosphere particle size, sintering time, and sintering temperature. Followed by sintering, a detailed characterization of the sintered parts in terms of density, microstructure, composition and phase has been carried out. The compressive strength of the sintered component has also been evaluated in details. The density of the sintered pellets varied with process parameters and is significantly reduced (2.5-2.11 g/cm3) as compared to as-received titanium (4.5 g/cm3). The compressive yield strength of the sintered pellet is reduced as compared to as-received Ti-6Al-4V.

An investigation of microstructure and properties of Sn3.0Ag0.5Cu-XAl2O3 composite solder

2016 ◽  
Vol 28 (2) ◽  
pp. 84-92 ◽  
Author(s):  
Guang Chen ◽  
Bomin Huang ◽  
Hui Liu ◽  
Y.C. Chan ◽  
Zirong Tang ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Ball Milling ◽  
Composite Solder ◽  
Solder Joints ◽  
Solder Matrix ◽  
Solder Alloys ◽  
Content Type ◽  
Microstructure And Properties ◽  
Sac Solder ◽  
Powder Metallurgy Route

Purpose The purpose of this paper is to investigate microstructure and properties of Sn3.0Ag0.5Cu-XAl2O3 composite solder which were prepared through powder metallurgy route. Design/methodology/approach Sn3.0Ag0.5Cu (SAC305)-XAl2O3 (X = 0.2, 0.4, 0.6, 0.8 Wt. %) composite solders were prepared through the powder metallurgy route. The morphology of composite solder powders which consists of Al2O3 particles and SAC solder powders after ball milling was observed. The retained ratio of Al2O3 nanoparticles in composite solder billets and solder joints were also quantitatively measured. Furthermore, the as-prepared composite solder alloys were studied extensively with regard to their microstructures, thermal property, wettability and mechanical properties. Findings After ball milling, the Al2O3 nanoparticles added were observed embedded into the surface of SAC solder powders. Only about 5-10 per cent of the initial Al2O3 nanoparticles added were detected in the composite solder joints after reflow. In addition, finer ß-Sn grains were achieved with addition of Al2O3 nanoparticles; the Al2O3 nanoparticles were found retained in the composite solder matrix. Besides, negligible changes in melting temperature and the considerably reduced undercooling were obtained in composite solder alloys. Wettability was improved by appropriate addition of Al2O3 nanoparticles. Microhardness and shear strength of composite solders were both improved after Al2O3 nanoparticles addition. Originality/value This paper indicated that powder metallurgy route offered a feasible approach to produce nanoparticle reinforced composite solder. In addition, the quantitative analysis of the actual retained ratio of the Al2O3 nanoparticles in solder joints provided practical implications for the manufacture of composite solders.

An investigation on the influence of sintering temperature on microstructural, physical and mechanical properties of Cu-SiC composites

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nalin Somani ◽  
Y. K. Tyagi ◽  
Nitin Kumar Gupta
Keyword(s):  
Tensile Strength ◽  
Electrical Resistivity ◽  
Powder Metallurgy ◽  
Sintering Temperature ◽  
Physical And Mechanical Properties ◽  
Content Type ◽  
Uniform Dispersion ◽  
Sic Composites ◽  
Pure Cu ◽  
Powder Metallurgy Route

Purpose The purpose of this study is to investigate the effect of the sintering temperature on the microstructural, mechanical and physical properties of Cu-SiC composites. Design/methodology/approach The powder metallurgy route was used to fabricate the samples. Cold compaction of powders was conducted at 250 MPa which was followed by sintering at 850°C–950°C at the interval of 50 °C in the open atmospheric furnace. SiC was used as a reinforcement and the volumetric fraction of the SiC was varied as 10%, 15% and 20%. The processed samples were metallurgically characterized by the scanning electron microscope (SEM). Mechanical characterization was done using tensile and Vickers’ micro-hardness testing to check the hardness and strength of the samples. Archimedes principle and Four-point collinear probe method were used to measure the density and electrical resistivity of the samples. Findings SEM micrograph reveals the uniform dispersion of the SiC particles in the Cu matrix element. The results revealed that the Hardness and tensile strength were improved due to the addition of SiC and were maximum for the samples sintered at 950 °C. The addition of SiC has also increased the electrical resistivity of the Cu-SiC composite and was lowest for Cu 100% while the relative density has shown the reverse trend. Further, it was found that the maximum hardness of 91.67 Hv and ultimate tensile strength of 312.93 MPa were found for Cu-20% SiC composite and the lowest electrical resistivity of 2.017 µ- Ω-cm was found for pure Cu sample sintered at 950 °C, and this temperature was concluded as the optimum sintering temperature. Research limitations/implications The powder metallurgy route for the fabrication of the composites is a challenging task as the trapping of oxygen cannot be controlled during the compaction process as well as during the sintering process. So, a more intensive study is required to overcome these kinds of limitations. Originality/value As of the author’s best knowledge, no work has been reported on the effect of sintering temperature on the properties of the Cu-SiC composites which has huge potential in the industries.

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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