Comparison of Spark Plasma Sintering and Hybrid Spark Plasma Sintering of Ni-Fe Alloys

Mixed Ni-50%Fe powders were sintered via spark plasma sintering (SPS) and hybrid spark plasma sintering (HSPS) techniques with 30 mm and 60 mm samples in both conditions. After SPS and HSPS, the 30 mm and 60 mm alloys (except 60mm-SPS) had a relative density (>99.0%) close to the theoretical dens...

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Bibliographic Details
Published inLecture notes in engineering and computer science Vol. 2229/2230; p. 778
Main Authors Shongwe, Mxolisi B, Ramakokovhu, Munyadziwa M, Lethabane, Moipane L, Olubambi, Peter A
Format Journal Article
LanguageEnglish
Published Hong Kong International Association of Engineers 05.07.2017
Subjects
Alloy powders
Evolution
Iron
Mechanical properties
Microstructure
Nickel base alloys
Plasma sintering
Spark plasma sintering
Theoretical density
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Summary:Mixed Ni-50%Fe powders were sintered via spark plasma sintering (SPS) and hybrid spark plasma sintering (HSPS) techniques with 30 mm and 60 mm samples in both conditions. After SPS and HSPS, the 30 mm and 60 mm alloys (except 60mm-SPS) had a relative density (>99.0%) close to the theoretical density. Phase, microstructure and mechanical properties evolution of Ni-50%Fe alloy during SPS and HSPS were studied. The microstructural evolution of the 60 mm alloys varied from the edge of the sample to the core of the sample. Results show that the grain size and the hardness vary considerable from the edge to the core of sintered sample of 60 mm sintered using conventional SPS compared to hybrid SPS. Similarly, the hardness also increased from the edge to the core.
ISSN:2078-0958
2078-0966