INVESTIGATION ON HOMOGENIZATION OF MN-2SNI-SCR (% WT) ALLOY

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SADEGHI MOHAMMADI MOHSEN; MANSOURI HOJATOLLAH; HADI MORTEZA

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Paper Information

Journal: Journal of Advanced Processes in Materials Engineering Year:2015 | Volume:9 | Issue:3 (34) Page(s): 163-178

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Title

INVESTIGATION ON HOMOGENIZATION OF MN-2SNI-SCR (% WT) ALLOY

Author(s)

SADEGHI MOHAMMADI MOHSEN | MANSOURI HOJATOLLAH | HADI MORTEZA | Issue Writer Certificate

Keywords

MN-NI ALLOYQ2

HOMOGENEITYQ2

SEGREGATIONQ2

DENDRITICQ3

Abstract

The present paper investigates the microstructure and macrostructure of a newly Mn-25Ni-5Cr (%wt) (Mn70) alloy during homogenization. The structure was analyzed by optical microscopy, energy dispersive spectroscopy and differential thermal analysis. The results show that DENDRITIC SEGREGATION exist in Mn70 alloy ingot. The inter DENDRITIC regions are rich in Ni and Cr and depleted in Mn. Macrostructure of Mn70 as -cast alloy consist of three zone: chill, columnar and equiaxed. For elimination of SEGREGATION during solidification various heat treatments were performed. For complete elimination of dendrite microstructure of casting alloy homogenization heat treatment was done at 900oC for 10-hour our studies show that by increasing the homogenization temperature to 1000oC can decrease the holding time, but, our studies indicates that for complete elimination of macro SEGREGATION and columnar to equiaxed transition 15-hour heat treatment at 1000°C is necessary. According to the obtained results, the DENDRITIC microstructure, inhomogenity of macrostructure and SEGREGATION of alloying elements can be reduced by heat treating at 1000oC for 15-hour remarkably.

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APA: Copy

SADEGHI MOHAMMADI, MOHSEN, MANSOURI, HOJATOLLAH, & HADI, MORTEZA. (2015). INVESTIGATION ON HOMOGENIZATION OF MN-2SNI-SCR (% WT) ALLOY. ADVANCED PROCESSES IN MATERIALS, 9(3 (34)), 163-178. SID. https://sid.ir/paper/172619/en

Vancouver: Copy

SADEGHI MOHAMMADI MOHSEN, MANSOURI HOJATOLLAH, HADI MORTEZA. INVESTIGATION ON HOMOGENIZATION OF MN-2SNI-SCR (% WT) ALLOY. ADVANCED PROCESSES IN MATERIALS[Internet]. 2015;9(3 (34)):163-178. Available from: https://sid.ir/paper/172619/en

IEEE: Copy

MOHSEN SADEGHI MOHAMMADI, HOJATOLLAH MANSOURI, and MORTEZA HADI, “INVESTIGATION ON HOMOGENIZATION OF MN-2SNI-SCR (% WT) ALLOY,” ADVANCED PROCESSES IN MATERIALS, vol. 9, no. 3 (34), pp. 163–178, 2015, [Online]. Available: https://sid.ir/paper/172619/en

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