کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1575135 | 1514734 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of quench rate and pre-deformation on precipitation hardening in Al-Mg-Si alloys with different Cu amounts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The effects of quench rate after solution heat treatment in combination with 1% pre-deformation on precipitation hardening in three Al-Mg-Si alloys have been investigated by transmission electron microscopy and hardness measurements during an isothermal heat treatment. The alloys contain different Cu amounts (up to 0.1Â wt%) and the same amounts of other solute elements. While a Cu amount below 0.01Â wt% does not affect precipitation hardening, an addition of 0.1Â wt% Cu increases hardness due to the formation of a fine microstructure having a high number density of short precipitates. A double peak hardness evolution was observed during isothermal heat treatment. This effect was most pronounced for alloys with low quench rate, and less pronounced for alloys with 1% pre-deformation and 0.1Â wt% Cu addition. The low quench rate also led to wider precipitation free zones. This effect was also less pronounced by 1% pre-deformation and addition of 0.1Â wt% Cu.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 609, 15 July 2014, Pages 72-79
Journal: Materials Science and Engineering: A - Volume 609, 15 July 2014, Pages 72-79
نویسندگان
Takeshi Saito, Calin D. Marioara, Jostein Røyset, Knut Marthinsen, Randi Holmestad,