کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1273401 1497613 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of hydrogen on fracture behavior of Ti–6Al–4V alloy by in-situ tensile test
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of hydrogen on fracture behavior of Ti–6Al–4V alloy by in-situ tensile test
چکیده انگلیسی

The fracture behaviors of non-hydrogenated, hydrogenated and dehydrogenated Ti–6Al–4V alloys were investigated by in-situ tensile test at room temperature. The distributions of stress and strain near the notch of in-situ tensile specimen were calculated using finite element method. Results indicate that hydrogen has an important effect on the fracture behavior of Ti–6Al–4V alloy. Crack initiation sites differ in the specimens treated by various procedures, and they are related to the stress intensity in specimens under different loads. The fracture mode of non-hydrogenated specimen is a ductile fracture by the initiation and coalescence of microvoids. The hydrogenated specimen shows a mixture of intergranular and transgranular brittle fractures. The dehydrogenated specimen is characterized by a mixture of intergranular and transgranular ductile fractures. The transition of fracture mode is attributed to the hydrogen atoms in solid solution and hydrides.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 4, February 2010, Pages 1829–1838
نویسندگان
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