The effect of some additives on some properties of Al-Si alloys of eutectic composition

مقدم أطروحة جامعية

Shukr, Rabab Hamid

مشرف أطروحة جامعية

al-Khazraji, Qahtan Khalaf

الجامعة

الجامعة التكنولوجية

الكلية

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القسم الأكاديمي

قسم هندسة المواد

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2010

الملخص الإنجليزي

The Present work encompasses the effect of some additives of wt (TiO2 & ZrO2.Y2O3) with a fixed amount of MgO about (1.0 % wt) on microstructure and some mechanical properties of the eutectic Al-12 % wt Si alloy.

The addition of 0.4 % wt TiO2, 0.6 % wt ZrO2.Y2O3 and 0.1 % wt of MgO had revealed the best modification compared with the other percentages of the mentioned additions, i.e.

the hardness about (24.49 BH) with lower wear rate of (7.5*10-9 cm3.cm-1) and a maximum value of impact resistance of (0.053 J / mm2) with tensile strength about (100 Mpa Also the research studies the effect of adding 2 %wt of (CaCl2 & CaF2) or CaF2 alone on grain refinement of the eutectic Al-Si alloy.

It was found that the addition of (CaCl2 & CaF2) had refined the eutectic phase in the Al-12 %wt Si alloy and revealed lower wear rate i.e.

(6*10-9 cm3.cm-1) and hardness was (39.70 BH).

Furthermore, the maximum value occurred in the impact resistance by adding 2 % wt of CaF2 with CaCl2 to the molten eutectic Al-Si alloy, i.e.

(0.0516 J / mm2) and ultimate tensile strength of (117 Mpa).

التخصصات الرئيسية

هندسة المواد والمعادن

الموضوعات

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Shukr, Rabab Hamid. (2010). The effect of some additives on some properties of Al-Si alloys of eutectic composition. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-305120

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Shukr, Rabab Hamid. The effect of some additives on some properties of Al-Si alloys of eutectic composition. (Master's theses Theses and Dissertations Master). University of Technology. (2010).
https://search.emarefa.net/detail/BIM-305120

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Shukr, Rabab Hamid. (2010). The effect of some additives on some properties of Al-Si alloys of eutectic composition. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-305120

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305120