تاثیر افزودن نیکل بر ریزساختار و قابلیت شیشه سازی آلیاژ آمورف حجمی Fe-Mo-P-C-B

نوع مقاله : علمی و پژوهشی

نویسندگان

• مهسا انصاری نیا
• امیر سیف الدینی
• سعید حسنی
• صادق قاسمی بنادکوکی

دانشگاه یزد

10.22067/ma.v31i2.67248

چکیده

در تحقیق حاضر تاثیر افزودن نیکل بر قابلیت شیشه‌ای شدن آلیاژ کامپوزیتی FeMoPCB بررسی و مقدار بهینه آن تعیین شد. سپس پایداری حرارتی این آلیاژ در حضور مقادیر مختف نیکل با استفاده از آزمون‌های تجربی ‘گرماسنجی روبشی تفاضلی، الگوی پراش پرتو ایکس، مشاهدات نوری و میکروسکوپ الکترونی عبوری و روش‌های محاسباتی مانند معیارهای α، β، γ و... بررسی شد. نتایج آزمون XRD، TEM نشان داد که با افزودن 10 درصد اتمی نیکل قابلیت شیشه‌ای شدن آلیاژ فوق افزایش می‌یابد و در درصدهای دیگر نیکل فازهای بلوری مختلفی شناسایی شدند. حضور فازهای بلوری با استفاده از آزمون سختی سنجی نیز بررسی شد. در نهایت مشخص شد که بدون در نظر گرفتن نتایج تجربی، نتایج روش‌های محاسباتی از دقت لازم برخوردار نیست.

کلیدواژه‌ها

• آلیاژهای آمورف
• فازهای بلوری
• ریز ساختار
• قابلیت شیشه ای شدن
• نیکل
• سختی سنجی
• TEM
• SEM
• XRD
• DSC

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عنوان مقاله [English]

The Effect of Ni Addition on the Microstructure and Glass Forming Ability of Fe-Mo-P-C-B Bulk Amorphous Alloy

نویسندگان [English]

• Mahsa Ansariniya
• Amir Seifoddini
• Saeed Hasani
• Sadegh Ghasemi

yazd university

چکیده [English]

In this work, the effect of Ni addition on the glass forming ability (GFA) of FeMoPCB composite alloy was investigated and the optimal amount of Ni to improve GFA was determined. So, the thermal stability of this alloy with the various percent of nickel was investigated by not only experimental methods including; differential scanning calorimetry, X-ray diffraction, optical microscope and transmission electron microscopy but also computational methods such as α، β، γ and etc. The results of XRD test, TEM showed that in the presence of 10 at.% nickel , the glass-forming ability of this alloy increased, while in the presence of lower or higher percent nickel, different crystalline phases were detected. The presence of crystalline phases was also investigated by microhardness test. Finally, it was found that the results of the computational methods regardless of the experimental results don’t have enough accurate .

کلیدواژه‌ها [English]

• Amorphous alloy
• Crystal phase
• Microstructure
• Glass forming ability
• Nickel
• Microhardness
• DSC
• XRD
• SEM
• TEM

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