The Effect of Inoculation on Properties of Modified Ductile Ni-Resist Alloy

Rashidi, M. M.; Idris, Mohd Hasbullah; Shayfull, Z.

doi:10.4028/www.scientific.net/kem.594-595.98

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…It is cannot be argued that higher value of Mn-Ni-resist tensile strength is well related to its annealing temperature by controlling its carbide formation. This result supported the previous report in microstructure analysis [21] as lesser carbide formation with higher annealing temperature. Apart from that, the influence of elements solid solution (manganese in particular) in alloyed iron which affected its mechanical properties could treat by annealing process.…”

Section: Microstructure Analysissupporting

confidence: 83%

Effect on Mechanical Properties of Heat Treated High Manganese Austenitic Cast Iron

et al. 2016

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Abstract. This work presents an attempt to study the effect of manganese addition and heat treatment on higher carbon austenitic cast iron to form high manganese austenitic cast iron with reduced nickel content (Mn-Ni-resist) on mechanical properties. The combination on microstructure (microsegregation), mechanical properties and the relationship of heat treatment on the alloy were analyzed. For this purpose Mn-Ni-resist (4.50C, 2.64Si, 6.0 Mn, 10 Ni) was melted and cast in the form of Y-block test pieces. Four different heat treatment procedures were applied to the as-cast to investigate the effect of alloy modifications on Mn-Ni-resist. Optical and scanning electron microscopies were used for microstructure investigation. To determine the mechanical properties tensile test and hardness test were carried out. The result indicates both composition and heat treatment affect the performance of Mn-Ni-resist intensively. Microprobe analysis shows some silicon segregation near the graphite and practically little segregation of manganese. The increase in manganese contents developed some fractions of segregated carbide structures in LTF region located at austenite eutectic cell frame, which caused the tensile properties to drop in a small range. Application of annealing heat treatment gradually changed the carbide formation, so is the material's strength.

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Section: Microstructure Analysissupporting

confidence: 83%

Effect on Mechanical Properties of Heat Treated High Manganese Austenitic Cast Iron

et al. 2016

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“…Through this study, the minimum Ni (10wt.%) used with addition of manganese (6 wt.%) to assist in promoting austenite matrix which is lower than the previous study and ASTM A436. Even though the combination of higher manganese wt% and less nickel wt% stabilized the austenite matrix, it is appears that those combination encourage carbide formation as reported previously [8,14,15]. In Mn-Ni-cast iron carbide formation was detected in area inter flake graphite region where located at grain boundary.…”

Section: Microstructure Analysismentioning

confidence: 51%

“…On the other hand, there are several investigation purposes the use of other element as replacement for nickel such as manganese and copper. They have been the object of recent studies [13][14][15][16]. Furthermore, it is also believed that manganese is better austenite promoter than copper [15].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Microstructure of Heat Treated High Manganese Austenitic Cast Iron

et al. 2016

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Abstract. The effect of manganese addition and annealing heat treatment on microstructure of austenitic cast irons with high manganese content (Mn-Ni-resist) were investigated. The complex relationship between the development of the solidification microstructures and buildup of microsegregation in Mn-Ni-resist was obtained by using microstructure analysis and EDS analysis. The annealing heat treatment was applied at 700°C up to 1000°C to investigate the effect of the annealing temperature on the microstructure. This experiment describes the characterization of microsegregation in Mn-Ni-reist was made by means of point counting microanalysis along the microstructure. With this method, the differences of silicon, manganese and nickel distribution in alloys solidified in the microstructure were clearly evidenced. The results show microstructure consists of flake graphite embedded in austenitic matrix and carbides. There is segregation of elements in the Late To Freeze (LTF) region after solidification from melting. Manganese positively with high concentration detected in the LTF region. As for heat treatment, higher annealing temperature on the Mn-Ni-resist was reduced carbide formation. The higher annealing temperature shows carbide transformed into a smaller size and disperses through the austenitic matrix structure. The size of carbide decreased with increasing annealing temperature as observed in the microstructure.

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The Effect of Inoculation on Properties of Modified Ductile Ni-Resist Alloy

Cited by 2 publications

References 30 publications

Effect on Mechanical Properties of Heat Treated High Manganese Austenitic Cast Iron

Effect on Mechanical Properties of Heat Treated High Manganese Austenitic Cast Iron

Investigation on Microstructure of Heat Treated High Manganese Austenitic Cast Iron

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