کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1600305 1515874 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystalline to amorphous transformation in Zr–Cu–Al alloys induced by high pressure torsion
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Crystalline to amorphous transformation in Zr–Cu–Al alloys induced by high pressure torsion
چکیده انگلیسی

Zr–Cu–Al alloys with various Al contents were processed by high pressure torsion (HPT). It was found that HPT can induce a remarkable crystalline to amorphous transformation in these alloys, with an almost fully amorphous structure obtained after 50 revolutions. Microstructural investigations indicated that the transformation from crystalline to amorphous structure is strongly dependent on both the accumulative torsional strain and chemical composition. Higher accumulative shear strain and Al content led to more pronounced amorphization. The amorphization occurred preferentially in the martensite phases with twin structure in Zr50Cu40Al10. Differential scanning calorimetric (DSC) analysis revealed a similar glass transition temperature in the amorphous samples produced by HPT to those prepared by rapid quenching.


► Crystalline to amorphous transformation was induced by high-pressure torsion (HPT).
► Martensite phases played an important role on the amorphization.
► Amorphization process in Zr–Cu–Al shows strongly dependent on the chemical compositions.
► Almost identical glass transition temperature suggested the same amorphous structure obtained by HPT and rapid cooling.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 37, June 2013, Pages 52–58
نویسندگان
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