AN INVESTIGATION ON THE EFFECT OF MN ON THE CASTABILITY OF HYPOEUTECTIC AL-2NI-XMN ALLOYS

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YOUSEFI FATEMEH; TAGHIABADI REZA; BAGHSHAHI SAEED

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Journal: FOUNDING RESEARCH JOURNAL Year:2017 | Volume:1 | Issue:2 Page(s): 69-78

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Title

AN INVESTIGATION ON THE EFFECT OF MN ON THE CASTABILITY OF HYPOEUTECTIC AL-2NI-XMN ALLOYS

Author(s)

YOUSEFI FATEMEH | TAGHIABADI REZA | BAGHSHAHI SAEED | Issue Writer Certificate

Keywords

AL-2NI

MANGANESE

CASTABILITY

FLUIDITY

HOT TEARING

Abstract

The effect of Mn addition (2 and 4 wt%) on the microstructure and CASTABILITY of hypoeutectic AL-2NI alloy was investigated. According to the results, Mn promotes the formation of Mn (Ni)-rich intermetallics in the microstructure. In the case of AL-2NI-2Mn alloy the intermetallic compounds are interdendritic type whilst in AL-2NI-4Mn alloy in addition to interdendritic intermetallics, the large and primary Mn-rich compounds with platelets, polyhedral and dendritic morphologies are present. The FLUIDITY results show that the addition of 2 and 4 wt% Mn enhances the mushy solidification of AL-2NI alloy leading to a FLUIDITY reduction of 7 and 30%, respectively. Based on the microstructural observations and thermal analysis results, this reduction can be attributed to the formation of primary Mn-rich compounds in the molten alloy. MANGANESE addition, also, exerts negative impact on the HOT TEARING resistance of AL-2NI alloy. The HOT TEARING susceptibility index (HTS) of AL-2NI-4Mn alloy is 5 and 12 times higher when compared to those of AL-2NI-2Mn and AL-2NI alloys, respectively. SEM investigation of hot tear microcracks and the presence of free dendrites and primary Mn-rich compounds on the fractured surfaces imply on the critical role of primary compounds on the formation of hot tear microcracks.

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APA: Copy

YOUSEFI, FATEMEH, TAGHIABADI, REZA, & BAGHSHAHI, SAEED. (2017). AN INVESTIGATION ON THE EFFECT OF MN ON THE CASTABILITY OF HYPOEUTECTIC AL-2NI-XMN ALLOYS. FOUNDING RESEARCH JOURNAL, 1(2 ), 69-78. SID. https://sid.ir/paper/265650/en

Vancouver: Copy

YOUSEFI FATEMEH, TAGHIABADI REZA, BAGHSHAHI SAEED. AN INVESTIGATION ON THE EFFECT OF MN ON THE CASTABILITY OF HYPOEUTECTIC AL-2NI-XMN ALLOYS. FOUNDING RESEARCH JOURNAL[Internet]. 2017;1(2 ):69-78. Available from: https://sid.ir/paper/265650/en

IEEE: Copy

FATEMEH YOUSEFI, REZA TAGHIABADI, and SAEED BAGHSHAHI, “AN INVESTIGATION ON THE EFFECT OF MN ON THE CASTABILITY OF HYPOEUTECTIC AL-2NI-XMN ALLOYS,” FOUNDING RESEARCH JOURNAL, vol. 1, no. 2 , pp. 69–78, 2017, [Online]. Available: https://sid.ir/paper/265650/en

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