EFFECT OF SOLUTION TREATMENT ON THE MICROSTRUCTURE OF γ' PRECIPITATES IN THE IN738LC SUPERALLOY BEFORE AND AFTER AGING

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SHAJARI YAZDAN; RAZAVI SEYED HOSSEIN; SEYEDRAOUFI ZAHRA SADAT

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Journal: FOUNDING RESEARCH JOURNAL Year:2017 | Volume:1 | Issue:2 Page(s): 99-108

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Title

EFFECT OF SOLUTION TREATMENT ON THE MICROSTRUCTURE OF γ' PRECIPITATES IN THE IN738LC SUPERALLOY BEFORE AND AFTER AGING

Author(s)

SHAJARI YAZDAN | RAZAVI SEYED HOSSEIN | SEYEDRAOUFI ZAHRA SADAT | Issue Writer Certificate

Keywords

IN738LC SUPERALLOY

SOLUTION HEAT TREATMENT

γ'PRECIPITATES

AGING

Abstract

Nickel base superalloys are used for their unique properties in the construction of various components of ground and air gas turbines. In the present study, the IN738LC SUPERALLOY was solubilized at a temperature of 1090oC to 1200oC and at a time of 30 to 120 minutes. The samples were aged for 24 hours after SOLUTION HEAT TREATMENT at 800oC. Before and after AGING, samples were examined by optical microscopes (OM), scanning electron microscopy (SEM) and field emission scanning electron microscopy (FESEM). The results showed that increasing the temperature and time of SOLUTION HEAT TREATMENT reduces the volume percentage and the size of the g¢ precipitates, while the volume percentage and size of the g¢ precipitates are increased and decreased, respectively, after AGING. Micro-hardness tests showed that hardness of the superalloy was strongly influenced by the characteristics of sediments. By increasing the solubility time and reducing the volume percentage of g¢ precipitates, the hardness decreased but it increased after AGING.

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APA: Copy

SHAJARI, YAZDAN, RAZAVI, SEYED HOSSEIN, & SEYEDRAOUFI, ZAHRA SADAT. (2017). EFFECT OF SOLUTION TREATMENT ON THE MICROSTRUCTURE OF γ' PRECIPITATES IN THE IN738LC SUPERALLOY BEFORE AND AFTER AGING. FOUNDING RESEARCH JOURNAL, 1(2 ), 99-108. SID. https://sid.ir/paper/265646/en

Vancouver: Copy

SHAJARI YAZDAN, RAZAVI SEYED HOSSEIN, SEYEDRAOUFI ZAHRA SADAT. EFFECT OF SOLUTION TREATMENT ON THE MICROSTRUCTURE OF γ' PRECIPITATES IN THE IN738LC SUPERALLOY BEFORE AND AFTER AGING. FOUNDING RESEARCH JOURNAL[Internet]. 2017;1(2 ):99-108. Available from: https://sid.ir/paper/265646/en

IEEE: Copy

YAZDAN SHAJARI, SEYED HOSSEIN RAZAVI, and ZAHRA SADAT SEYEDRAOUFI, “EFFECT OF SOLUTION TREATMENT ON THE MICROSTRUCTURE OF γ' PRECIPITATES IN THE IN738LC SUPERALLOY BEFORE AND AFTER AGING,” FOUNDING RESEARCH JOURNAL, vol. 1, no. 2 , pp. 99–108, 2017, [Online]. Available: https://sid.ir/paper/265646/en

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