کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1601985 1515895 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acoustic emissions analysis of damage in amorphous and crystalline metal foams
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Acoustic emissions analysis of damage in amorphous and crystalline metal foams
چکیده انگلیسی

Acoustic emission methods are used to investigate the nature and evolution of microfracture damage during uniaxial compression of ductile amorphous and brittle crystalline metal foams made from a commercial Zr-based bulk metallic glass, and to compare this behavior against that of aluminum-based foam of similar structure. For the amorphous foam, acoustic activity reveals evolution of the damage process from diffuse to localized damage through the foam stress plateau region, and reversion back towards diffuse damage in the foam densification region. Accommodation of microfracture by surrounding ductile struts, and significant point contact formation, permit high average compressive strains of ca. 80% in the amorphous foam without macroscopic failure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 14, Issues 8–9, August–September 2006, Pages 857–865
نویسندگان
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