Effect of Melt Holding Time on γ ' Precipitates and Stress Rupture Properties of Rene 80 Superalloy

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Kouhi Faeigh Dehkordi Saeed; SEIFOLLAHI MASUMEH; ABBASI SEYED MAHDI; Ghazi Mirsaeed Seyed Mahdi

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Journal: FOUNDING RESEARCH JOURNAL Year:2019 | Volume:3 | Issue:1 Page(s): 29-36

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Title

Effect of Melt Holding Time on γ ' Precipitates and Stress Rupture Properties of Rene 80 Superalloy

Author(s)

Kouhi Faeigh Dehkordi Saeed | SEIFOLLAHI MASUMEH | ABBASI SEYED MAHDI | Ghazi Mirsaeed Seyed Mahdi | Issue Writer Certificate

Keywords

Melt holding time

VIM furnaces

γ' precipitates

Stress rupture properties

Rene 80 superalloy

Abstract

The purpose of this investigation is to study the effect of Melt holding time (3, 20 min) in vacuum induction melting furnace (VIM) with alumina crucible on the amount of gases, γ ' precipitates and Stress rupture properties of Rene 80 superalloy. For this purpose, the amount of O, N gasses and chemical composition were analyzed. The microstructure was assessed by scanning electron microscopy (SEM) and Stress rupture properties was performed at 980˚ C. The results showed that with increasing the Melt holding time from 3 to 20 min, γ ' volume fraction reduced from 46 to 37% and also, oxygen level of the alloys increased from 79 to 165 ppm because of the alumina reduction. The morphology of γ ' changed from semi-cubic to cubic one. The result of mechanical test showed that the stress-rupture life of samples reduced from 22. 6 to 19 hours by increasing Melt holding time because of reducing γ ' volume fraction.

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APA: Copy

Kouhi Faeigh Dehkordi, Saeed, SEIFOLLAHI, MASUMEH, ABBASI, SEYED MAHDI, & Ghazi Mirsaeed, Seyed Mahdi. (2019). Effect of Melt Holding Time on γ ' Precipitates and Stress Rupture Properties of Rene 80 Superalloy. FOUNDING RESEARCH JOURNAL, 3(1 ), 29-36. SID. https://sid.ir/paper/265687/en

Vancouver: Copy

Kouhi Faeigh Dehkordi Saeed, SEIFOLLAHI MASUMEH, ABBASI SEYED MAHDI, Ghazi Mirsaeed Seyed Mahdi. Effect of Melt Holding Time on γ ' Precipitates and Stress Rupture Properties of Rene 80 Superalloy. FOUNDING RESEARCH JOURNAL[Internet]. 2019;3(1 ):29-36. Available from: https://sid.ir/paper/265687/en

IEEE: Copy

Saeed Kouhi Faeigh Dehkordi, MASUMEH SEIFOLLAHI, SEYED MAHDI ABBASI, and Seyed Mahdi Ghazi Mirsaeed, “Effect of Melt Holding Time on γ ' Precipitates and Stress Rupture Properties of Rene 80 Superalloy,” FOUNDING RESEARCH JOURNAL, vol. 3, no. 1 , pp. 29–36, 2019, [Online]. Available: https://sid.ir/paper/265687/en

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