The effects of solidification on the microstructure and mechanical properties of modified ductile Ni-resist iron with a high manganese content

In this study, ductile Ni-resist with a minimum nickel content of 18wt% was modified. Up to 12wt% manganese was added together with 10wt% nickel to investigate the effects of the alloying elements on the solidification, microstructure and mechanical properties of the Ni-resist. The effects of the so...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2014-03, Vol.597, p.395-407
Main Authors: Rashidi, M. Mohd, Idris, Mohd Hasbullah
Format: Article
Language:English
Subjects:
Aggregates
Applied sciences
Austenite
Carbides
Cross-disciplinary physics: materials science
rheology
Dendrite arm spacing
Dendritic structure
Ductile Ni-resist iron
Elasticity and anelasticity
Exact sciences and technology
Manganese
Materials science
Mechanical properties
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Microstructure
Nickel
Nodular graphite
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Solidification
Solidification cooling rate
Treatment of materials and its effects on microstructure and properties
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Summary:In this study, ductile Ni-resist with a minimum nickel content of 18wt% was modified. Up to 12wt% manganese was added together with 10wt% nickel to investigate the effects of the alloying elements on the solidification, microstructure and mechanical properties of the Ni-resist. The effects of the solidification stage on the primary dendrite arm spacing (DAS), secondary dendrite arm spacing (SDAS), graphite aggregates, carbide formation and a series of mechanical properties were evaluated. The results indicate that the DAS, SDAS, graphite aggregate and carbide are directly dependent on the solidification cooling rate. Consequently, various mechanical properties of the Ni-resist are also affected by the addition of manganese. The tensile strength of the modified ductile Ni-resist decreased as the manganese content increased.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2013.12.070