کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
766314 1462556 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and Martensitic Transformation Behaviors of Explosively Welded NiTi/NiTi Laminates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
پیش نمایش صفحه اول مقاله
Microstructure and Martensitic Transformation Behaviors of Explosively Welded NiTi/NiTi Laminates
چکیده انگلیسی

The study is a first attempt to prepare bulk NiTi/NiTi shape memory alloy (SMA) laminates with a macroscopic heterogeneous composition by explosive welding and investigate their microstructures and martensitic transformation behaviors. After explosive welding, a perfect interfacial bonding between the two components and a reversible martensitic transformation are realized in the tandem. Results show achievement of a fine granular structure and the maximum value of microhardness near the welding interface because of the excessive cold plastic deformation and the high impact velocity during the explosive welding. Meanwhile, the effects of aging on the transformation of the welded tandem are investigated by differential scanning calorimeter (DSC) and subject to discussion. The transformation temperatures of NiTi/NiTi SMAs increase with the rise of the aging temperature. The experimental results indicate the shape memory properties of NiTi/NiTi SMA fabricated by explosive welding can be improved by optimizing the aging technology.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Aeronautics - Volume 20, Issue 2, April 2007, Pages 168-171