کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1445770 1509610 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Precipitation kinetics in a severely plastically deformed 7075 aluminium alloy
ترجمه فارسی عنوان
سینتیکی رسوب در آلیاژ آلومینیوم 7075 به شدت پلاستیکی تغییر شکل داده شده است
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

In this paper we report a quantitative study, using small-angle X-ray scattering, of the precipitation kinetics during ramp heating and isothermal ageing in an AA7075 aluminium alloy processed by high-pressure torsion. The precipitation behaviour has been compared with that of the same material processed in a conventional manner and observations are supplemented by transmission electron microscopy for precipitate and grain size characterization using automated crystal orientation mapping. After severe plastic deformation and natural ageing, the material is shown to contain a high density of GP zones. During ageing, the precipitate size distribution becomes bimodal, with small precipitates behaving similarly to those of the conventionally processed material and large ones associated with the crystalline defects and reaching large sizes at considerably lower temperatures and shorter times as compared to the conventionally processed material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 66, March 2014, Pages 105–117
نویسندگان
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