کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1640981 1517207 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intermetallics formed at interface of ultrafine grained Al/Mg bi-layered disks processed by high pressure torsion at room temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Intermetallics formed at interface of ultrafine grained Al/Mg bi-layered disks processed by high pressure torsion at room temperature
چکیده انگلیسی


• A Mg/Al bilayered disk is bonded by high pressure torsion at room temperature.
• A very thin layer of γ-Mg17Al12 of 260 nm in thickness is formed at the interface.
• Forming γ phase at low temperature is due to high pressure and large strain, etc.
• No other phases were detected, which is attributed to high interfacial energies

In this work, Mg/Al bi-layered disks were fabricated by high pressure torsion (HPT) at room temperature. A 0.26 µm layer of γ-Mg17Al12 intermetallic formed at the interface of Mg/Al disks. This is very different to the interface of Mg/Al produced by other techniques such as diffusion bonding and friction stir welding where both γ-Mg17Al12 and β-Al3Mg2 form and the β-Al3Mg2 layer is much thicker than the γ-Mg17Al12 layer. This unusual phenomenon is attributed to the interfacial energies of intermetallics and the effect of room temperature HPT on diffusion of Al in Mg and the γ-Mg17Al12 layer.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 181, 15 October 2016, Pages 187–190
نویسندگان
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