EFFECT OF MILLING TIME AND INVESTIGATION OF THERMODYNAMIC ANALYSIS ON AMORPHOUS PHASE FORMATION IN FE-C-TA ALLOY PREPARED BY MECHANICAL ALLOYING

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BAHADORI YEKTA E.; TAGHVAEI A.H.; SHARAFI SHAHRIYAR

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Journal: JOURNAL OF NEW MATERIALS Year:2018 | Volume:8 | Issue:3 (31) Page(s): 107-121

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Title

EFFECT OF MILLING TIME AND INVESTIGATION OF THERMODYNAMIC ANALYSIS ON AMORPHOUS PHASE FORMATION IN FE-C-TA ALLOY PREPARED BY MECHANICAL ALLOYING

Author(s)

BAHADORI YEKTA E. | TAGHVAEI A.H. | SHARAFI SHAHRIYAR | Issue Writer Certificate

Keywords

FE-BASE AMORPHOUS ALLOYSQ1

MECHANICAL ALLOYINGQ2

ADVANCED MIEDEMA MODELQ1

Abstract

Nowadays, soft magnetic materials such as nanocrystalline and amorphous alloys with unique physical, mechanical and magnetic properties have attracted much attention. Recently, Fe-based amorphous alloys have been greatly developed due to their excellent magnetic properties and relatively low cost. In this study, effect of milling time on microstructure of Fe-C-Ta alloy prepared by MECHANICAL ALLOYING was studied. Besides, the possibility of glass formation was investigated according to thermodynamic calculations, performed based on ADVANCED MIEDEMA MODEL. The X-ray diffraction (XRD) results proposed that the fraction of amorphous phase enhances by increasing milling time up to 70 h, and then it becomes unchanged up to 90 h milling. Moreover, the differential scanning calorimetry (DSC) results confirmed the formation of amorphous phase with a crystallization temperature of 678 K, after 70 h of milling. The thermodynamic calculations with respect to the ADVANCED MIEDEMA MODEL revealed that the Gibbs free energy changes for glass formation (-42.35 kJ/mol) are larger than those of solid-solution formation (-28.5 kJ/mol) and consequently, the amorphous phase has a larger tendency to form after milling.

Cites

Effect of PCA addition on microstructural and magnetic Properties a new Fe-based amorphous alloy prepared by Mechanical Alloying

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APA: Copy

BAHADORI YEKTA, E., TAGHVAEI, A.H., & SHARAFI, SHAHRIYAR. (2018). EFFECT OF MILLING TIME AND INVESTIGATION OF THERMODYNAMIC ANALYSIS ON AMORPHOUS PHASE FORMATION IN FE-C-TA ALLOY PREPARED BY MECHANICAL ALLOYING. JOURNAL OF NEW MATERIALS, 8(3 (31) ), 107-121. SID. https://sid.ir/paper/170024/en

Vancouver: Copy

BAHADORI YEKTA E., TAGHVAEI A.H., SHARAFI SHAHRIYAR. EFFECT OF MILLING TIME AND INVESTIGATION OF THERMODYNAMIC ANALYSIS ON AMORPHOUS PHASE FORMATION IN FE-C-TA ALLOY PREPARED BY MECHANICAL ALLOYING. JOURNAL OF NEW MATERIALS[Internet]. 2018;8(3 (31) ):107-121. Available from: https://sid.ir/paper/170024/en

IEEE: Copy

E. BAHADORI YEKTA, A.H. TAGHVAEI, and SHAHRIYAR SHARAFI, “EFFECT OF MILLING TIME AND INVESTIGATION OF THERMODYNAMIC ANALYSIS ON AMORPHOUS PHASE FORMATION IN FE-C-TA ALLOY PREPARED BY MECHANICAL ALLOYING,” JOURNAL OF NEW MATERIALS, vol. 8, no. 3 (31) , pp. 107–121, 2018, [Online]. Available: https://sid.ir/paper/170024/en

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