Deformation behavior of high speed steel/low Carbon steel composite with harmonic structure by MM/SPS process

The harmonic-structured composite that consists of a network fine grain region with a high speed steel and a dispersed coarse grain region with a low carbon steel was fabricated prepared using a mechanical milling, which is one of the severe plastic deformation method, and spark plasma sintering pro...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2014-08, Vol.63 (1), p.12029
Main Authors: Tsuzuki, Y, Fujiwara, H, Miyamoto, H, Ameyama, K
Format: Article
Language:English
Subjects:
Ductility tests
Elongated structure
High speed
High speed tool steels
Low carbon steel
Low carbon steels
Mechanical milling
Mechanical properties
Microstructure
Plasma sintering
Plastic deformation
Spark plasma sintering
Tensile tests
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Summary:The harmonic-structured composite that consists of a network fine grain region with a high speed steel and a dispersed coarse grain region with a low carbon steel was fabricated prepared using a mechanical milling, which is one of the severe plastic deformation method, and spark plasma sintering process. The microstructure and mechanical properties harmonic- structured composite compact were evaluated by a scaning electron microscope and a tensile test, respectively. The harmonic-structured composite exhibited high strength and enough ductility compared with a conventional particle-dispersed composite with the same weight ratio of high speed steel/low carbon steel. The microstructure observation of harmonic-structured composite revieals that the superior elongation of the harmonic-structured composite is attributed to the plastic deformation around the cracks which initiate at the network area.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/63/1/012029