ON THE SPINODAL DECOMPOSITION PHENOMENA IN A NI-AL ALLOY SYSTEM AIDED BY THERMODYNAMIC CALCULATION

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

FORGHANI FARSAD; NILI AHMADABADI MAHMOUD; ABBASCHIAN REZA; ASADI HAMID

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: METALLURGICAL ENGINEERING Year:2017 | Volume:20 | Issue:2 (66) Page(s): 72-82

Download Full-Text

Persian Verion

View:

726

Download:

Cites:

Information Journal Paper

Title

ON THE SPINODAL DECOMPOSITION PHENOMENA IN A NI-AL ALLOY SYSTEM AIDED BY THERMODYNAMIC CALCULATION

Author(s)

FORGHANI FARSAD | NILI AHMADABADI MAHMOUD | ABBASCHIAN REZA | ASADI HAMID | Issue Writer Certificate

Keywords

NI-AL ALLOY SYSTEMQ2

ORDER AND DISORDER PHASESQ2

THERMODYNAMIC CALCULATIONQ2

CALPHAD METHODQ2

Abstract

Formation and evolution of order-disorder microstructure of g/g’phases plays an important role in high temperature strength of cast nickel-based superalloys. Accordingly, the characterization of formation mechanism, as well as morphology and interface of g and g’phases, are very important to control the mechanical properties of nickel-based superalloys. Formation of g’ precipitates inside the g phase matrix often occurs by classical nucleation and growth mechanism. Recently, some researches have reported the formation of g’ precipitates by spinodal decomposition mechanism in some Ni-based superalloys. In the present study, the spinodal decomposition phenomena in a Ni-Al binary system (as a simple model alloy for Ni-based superalloys) has been studied. For this purpose, the Ni-rich region of NI-AL ALLOY SYSTEM was assessed thermodynamically using CALPHAD METHOD. The Gibbs free energy of g and g’phases for this alloy system was calculated employing two sublattice model. Then, the possibility of spinodal decomposition was investigated from the thermodynamic point of view by the study of the Gibbs energy curves in different ranges of temperature. Due to the thermodynamic modeling results, a proper heat treatment procedure was designed for Ni-18Al (at.%) alloy and characterized by means of 3D atom probe tomography (APT) analysis. According to the modeling and experimental results, it was found that g’ precipitates were formed by spinodal decomposition under higher supersaturation conditions.

Cites

No record.

References

No record.

Cite

APA: Copy

FORGHANI, FARSAD, NILI AHMADABADI, MAHMOUD, ABBASCHIAN, REZA, & ASADI, HAMID. (2017). ON THE SPINODAL DECOMPOSITION PHENOMENA IN A NI-AL ALLOY SYSTEM AIDED BY THERMODYNAMIC CALCULATION. METALLURGICAL ENGINEERING, 20(2 (66) ), 72-82. SID. https://sid.ir/paper/112419/en

Vancouver: Copy

FORGHANI FARSAD, NILI AHMADABADI MAHMOUD, ABBASCHIAN REZA, ASADI HAMID. ON THE SPINODAL DECOMPOSITION PHENOMENA IN A NI-AL ALLOY SYSTEM AIDED BY THERMODYNAMIC CALCULATION. METALLURGICAL ENGINEERING[Internet]. 2017;20(2 (66) ):72-82. Available from: https://sid.ir/paper/112419/en

IEEE: Copy

FARSAD FORGHANI, MAHMOUD NILI AHMADABADI, REZA ABBASCHIAN, and HAMID ASADI, “ON THE SPINODAL DECOMPOSITION PHENOMENA IN A NI-AL ALLOY SYSTEM AIDED BY THERMODYNAMIC CALCULATION,” METALLURGICAL ENGINEERING, vol. 20, no. 2 (66) , pp. 72–82, 2017, [Online]. Available: https://sid.ir/paper/112419/en

Related Journal Papers