Investigation of Heat Transfer Coefficients Effects in Directional Solidification of GTD111 Super-Alloy

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Torfeh Maryam; Mirbagheri Seyed Mohammad Hossein; AGHAZADEH JAMSHID

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Journal: FOUNDING RESEARCH JOURNAL Year:2019 | Volume:3 | Issue:1 Page(s): 11-20

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Title

Investigation of Heat Transfer Coefficients Effects in Directional Solidification of GTD111 Super-Alloy

Author(s)

Torfeh Maryam | Mirbagheri Seyed Mohammad Hossein | AGHAZADEH JAMSHID | Issue Writer Certificate

Keywords

Directional solidification

GTD111-DS alloy

Heat transfer

Microstructural modeling

Ni super-alloys

Abstract

In this study, the effect of the Heat transfer boundary conditions on simulation of the Directional solidification and microstructure of columnar grains for GTD111-DS super-alloy was investigated. In the first step, a cluster with 16 GTD111-DS carrots was cast and solidified in a Bridgman furnace at a fixed boundary conditions of Heat transfer. Then, metallography images were prepared in longitude and transverse direction of carrots cross-sections (real metallography). Second, grain growth and microstructures of columnar grains were simulated by Pro-Cast soft wear. Then the grain distribution and the morphology of columnar grains in the longitude and the transverse directions of carrots cross-section were plotted by simulation results (virtual metallography). Comparison between the real and the virtual microstructural show a good consistency. Finally, some others Heat transfer boundary conditions were run in order to obtained optimum of the temperature gradient and the growth rate. The simulation results show that at a growth rate about 4 mm/min, with setting the temperature gradient between 80 and 100 ° C/mm, the secondary arms space of dendrite’ s for columnar grains will be approximately 12 μ m.

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APA: Copy

Torfeh, Maryam, Mirbagheri, Seyed Mohammad Hossein, & AGHAZADEH, JAMSHID. (2019). Investigation of Heat Transfer Coefficients Effects in Directional Solidification of GTD111 Super-Alloy. FOUNDING RESEARCH JOURNAL, 3(1 ), 11-20. SID. https://sid.ir/paper/265691/en

Vancouver: Copy

Torfeh Maryam, Mirbagheri Seyed Mohammad Hossein, AGHAZADEH JAMSHID. Investigation of Heat Transfer Coefficients Effects in Directional Solidification of GTD111 Super-Alloy. FOUNDING RESEARCH JOURNAL[Internet]. 2019;3(1 ):11-20. Available from: https://sid.ir/paper/265691/en

IEEE: Copy

Maryam Torfeh, Seyed Mohammad Hossein Mirbagheri, and JAMSHID AGHAZADEH, “Investigation of Heat Transfer Coefficients Effects in Directional Solidification of GTD111 Super-Alloy,” FOUNDING RESEARCH JOURNAL, vol. 3, no. 1 , pp. 11–20, 2019, [Online]. Available: https://sid.ir/paper/265691/en

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