کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1623778 1516413 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Superplasticity and superplastic forming of Mg–Al–Zn alloy sheets fabricated by strip casting method
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Superplasticity and superplastic forming of Mg–Al–Zn alloy sheets fabricated by strip casting method
چکیده انگلیسی

Superplastic properties and formability of the AZ31 sheet processed by strip casting and subsequent warm rolling were examined. Microstructure of the AZ31 sheet with thickness of 1.3 mm was uniform and composed of equiaxed grains with an average size of 6.6 μm. The sheet exhibited excellent superplasticity with a maximum elongation of 800% at 673 K and 2 × 10−4 s−1. A 250 mm × 250 mm size panel with complicated embossing patterns could be successfully formed into near net shape by gas pressure against a single female die. Small grain size and slow grain growth during deformation resulted in the superior superplastic properties at 673 K. The governing deformation mechanisms in any given strain-rate and temperature ranges could be predicted by the deformation mechanism maps for Mg–Al–Zn alloys.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 464, Issues 1–2, 22 September 2008, Pages 197–204
نویسندگان
, , ,