Cooling Curve Analysis on the effect of Mg/Cu Ratio on Solidification Behavior of Al-۱۵Zn-xMg-yCu Alloy

  • سال انتشار: 1400
  • محل انتشار: ششمین کنفرانس بین المللی مهندسی مکانیک ، مواد و متالورژی
  • کد COI اختصاصی: MEMCONF06_044
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 342
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نویسندگان

Elaheh Maleki

Engineering Group, Iran University of Industries and Mines

Saman Mostafapoor

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran

Mehdi Malekan

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran

Masoud Emamy

School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran

چکیده

In this work, the effect of variation of Mg to Cu ratio for Al-۱۵Zn-xMg-yCu (x+y=۵) was studied using computer aided cooling curve analysis method. In this respect, different amounts of ۰.۲۵, ۰.۶۶, ۱.۰۰, ۱.۵, and ۴ were selected for Mg/Cu ratio. Then, cooling curve analysis was performed for studied alloys. The provided data used to extract solidification parameters of the specimens. It was seen that, Mg/Cu ratio affects solidification behaviour of the alloy. The results showed that the influence of Mg/Cu ratio on solidification could be divided into two parts of ratios smaller than ۱ and those larger than that. For Mg/Cu< ۱, solidification range, especially affected by solidus temperature, increases when the ratio climbs. In this ratio region, nucleation undercooling reduced with increment of Mg/Cu ratio although recalescence undercooling shows an increment in this region. For Mg/Cu> ۱ both undercoolings vary conversely compared to Mg/Cu< ۱ region.

کلیدواژه ها

Al-Zn-Mg-Cu, Aluminum Alloy; Solidification; Thermal Analysis, Computer Aided Coolong Curve

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