کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10128687 1645141 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Face-centered titanium induced by ultrasonic surface rolling process in Ti-6Al-4V alloy and its tensile behavior
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Face-centered titanium induced by ultrasonic surface rolling process in Ti-6Al-4V alloy and its tensile behavior
چکیده انگلیسی
The phase transformation of face-centered cubic (fcc) titanium (Ti), transformed from hexagonal close-packed (hcp) Ti, in Ti-6Al-4V alloy subjected to ultrasonic surface rolling process (USRP) and the tensile behavior were investigated. A gradient nanostructure of fcc-Ti was formed from the depth of 440 μm to the top surface. The stress concentration at the phase interface of α phase and β phase promoted hcp to fcc phase transformation in low strain and strain rate region (adjacent to the substrate) while the extremely high strain and strain rate induced this phase transformation in the surface to sub-surface regions. USRP increased the tensile strength of Ti-6Al-4V alloy slightly but decreased the yield strength dramatically, and kept a good combination strength and ductility of Ti-6Al-4V alloy mainly due to the formation of the gradient nanostructure surface layer and hcp to fcc phase transformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 145, November 2018, Pages 527-533
نویسندگان
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