THE EFFECTS OF HEAT TREATMENT PARAMETERS ON THE MICROSTRUCTURES OF ALUMINIUM DUCTILE CAST IRON

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RASHIDI M.; BOUTORABI S.M.A.

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Journal: JOURNAL OF NEW MATERIALS Year:2014 | Volume:4 | Issue:2 (14) Page(s): 67-78

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Title

THE EFFECTS OF HEAT TREATMENT PARAMETERS ON THE MICROSTRUCTURES OF ALUMINIUM DUCTILE CAST IRON

Author(s)

RASHIDI M. | BOUTORABI S.M.A. | Issue Writer Certificate

Keywords

ALUMINIUM CAST IRONQ3

DUAL MATRIX STRUCTUREQ3

FERRITIC-MARTENSITICQ3

MICROSTRUCTUREQ2

Abstract

The effects of the heat treatment parameters on the MICROSTRUCTURE of DUAL MATRIX STRUCTURE (DMS) Aluminium Ductile Irons has been investigated in this research. The samples were cast and full annealing heat treatment was carried out in order to produce ferritic structure. The samples preheated at 600 oC for 10 minutes, followed by austenitising at 2 temperatures (920 oC, 950 oC) in motlen aluminium for various times (1 minutes to 15 minutes), followed by oil-quenching. Scaning Electron Microscopy (SEM) and Optical Microscopy (OM) were used to evaluate the distribution of martensite in matrix. The results revealed that martensite is created in the intercellular regions at shorter partial austenitizing times, nevertheless, it is also formed around spherical graphites by increasing the partial austenitizing time. Moreover, it is seen that raising the temperature at a constant partial austenitizing time will increase the volume fraction of the martensite and totally, the rate of creating of the martensite in 950 oC is more than that in 920 oC. In addition, the volume fraction of the martensite at 950 oC and 4 minutes was obtained to maximum of 90.7%.

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References

STUDY ON CHEMICAL COMPOSITION AND HEAT TREATMENT CYCLE OF AUSTEMPERED DUCTILE IRON FOR IMPROVED MACHINABILITY AND FATIGUE PROPERTIES

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APA: Copy

RASHIDI, M., & BOUTORABI, S.M.A.. (2014). THE EFFECTS OF HEAT TREATMENT PARAMETERS ON THE MICROSTRUCTURES OF ALUMINIUM DUCTILE CAST IRON. JOURNAL OF NEW MATERIALS, 4(2 (14)), 67-78. SID. https://sid.ir/paper/170042/en

Vancouver: Copy

RASHIDI M., BOUTORABI S.M.A.. THE EFFECTS OF HEAT TREATMENT PARAMETERS ON THE MICROSTRUCTURES OF ALUMINIUM DUCTILE CAST IRON. JOURNAL OF NEW MATERIALS[Internet]. 2014;4(2 (14)):67-78. Available from: https://sid.ir/paper/170042/en

IEEE: Copy

M. RASHIDI, and S.M.A. BOUTORABI, “THE EFFECTS OF HEAT TREATMENT PARAMETERS ON THE MICROSTRUCTURES OF ALUMINIUM DUCTILE CAST IRON,” JOURNAL OF NEW MATERIALS, vol. 4, no. 2 (14), pp. 67–78, 2014, [Online]. Available: https://sid.ir/paper/170042/en

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