Structural and microhardness studies of Al-Ni-Cr alloy ingots

Joint Authors

Abbas, Khalid H.
Hashim, Fuad Shakir

Source

Journal of Babylon University : Journal of Applied and Pure Sciences

Issue

Vol. 22, Issue 4 (31 Aug. 2014), pp.1414-1420, 7 p.

Publisher

University of Babylon

Publication Date

2014-08-31

Country of Publication

Iraq

No. of Pages

7

Main Subjects

Materials Science , Minerals

Topics

Abstract AR

مسبوكة Al و Al-Ni-Cr (المحتویة على نسب مختلفة من Ni-Cr بالمقدار 0.25, 0.5, 0.99, 1.98) المحضرة بإذابة أسلاك من الألمنیوم مع مسحوق النیكل و قطع صغیرة جدا من الكروم في فرن كهربائي بدرجة حرارة مقداره 800 °C تحت فراغ من الاركون.

بعد المعاملة الحراریة للنماذج المحضرة بدرجة 560 °C لفترة 1300 hr, یبین حیود الأشعة السینیة ظهور و نمو ثلاثة أطوار ثنائیة : Al3Ni (معيني, a = 7.352, b = 7.352, c = 4.802), Cr9Al17 (موشوري سداسي, a = 12.910, c = 15.677) و Ni2Cr3 (رباعي الزوايا a = 8.85, c = 4.58) إضافة إلى اطوار غیر معروفة.

الحجم الحبیبي یقل بزیادة محتوى Ni-Cr في السبیكة باستثناء النسبة 1.98 at%.

النتائج تشیر إلى زیادة الصلادة الدقیقة ثلاثة اضعاف بزیادة الكثافة بمقدار 0.1 g/cm3.

Abstract EN

Ingots of Al and Al-Ni-Cr (contains 0.25, 0.5, 0.99, 1.98 at.

% Ni-Cr) alloys were prepared by melting together wire aluminium, powder nickel and very small pieces of chromium in an electric furnace at 800 oC under an argon atmosphere.

XRD analysis after exposed the alloys to annealing at 560 oC for 1300 hr showed the emergence and growth of three binary phases: Al3Ni (Orthorhombic, a = 6.598Ǻ, b = 7.352 Ǻ, c = 4.802 Ǻ), Cr9Al17(Rhombohedral, a = 12.910, c = 15.677 Ǻ), and Ni2Cr3(Tetragonal, a = 8.82 Ǻ, c = 4.58 Ǻ) in addition to unknown phases.

The crystallite size decrease with increasing Ni-Cr contents exception the ratio 1.98 at.

%.

The results refer to rising of microhardness three times when raised the alloy density 0.1 g / cm3.

American Psychological Association (APA)

Abbas, Khalid H.& Hashim, Fuad Shakir. 2014. Structural and microhardness studies of Al-Ni-Cr alloy ingots. Journal of Babylon University : Journal of Applied and Pure Sciences،Vol. 22, no. 4, pp.1414-1420.
https://search.emarefa.net/detail/BIM-364958

Modern Language Association (MLA)

Abbas, Khalid H.& Hashim, Fuad Shakir. Structural and microhardness studies of Al-Ni-Cr alloy ingots. Journal of Babylon University : Journal of Applied and Pure Sciences Vol. 22, no. 4 (2014), pp.1414-1420.
https://search.emarefa.net/detail/BIM-364958

American Medical Association (AMA)

Abbas, Khalid H.& Hashim, Fuad Shakir. Structural and microhardness studies of Al-Ni-Cr alloy ingots. Journal of Babylon University : Journal of Applied and Pure Sciences. 2014. Vol. 22, no. 4, pp.1414-1420.
https://search.emarefa.net/detail/BIM-364958

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 1420

Record ID

BIM-364958