کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5457560 | 1515821 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneously achieving high tensile strength and fracture toughness of Ti/Ti-Al multilayered composites
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ti/Ti-Al multilayered composites with different volume fractions of α-Ti layer were fabricated by hot press sintering. Microstructural observation indicates that the phase compositions in all the composites are α-Ti, Ti3Al, TiAl, TiAl2 and TiAl3. The tensile strength and fracture toughness of Ti/Ti-Al multilayered composites are influenced by the volume fraction of α-Ti layer. The composite with 53 vol% Ti presents the highest tensile strength and suitable ductility at room temperature, and its fracture toughness can reach 47.6 MPam, which is much higher than that of TiAl intermetallic alloy and Ti/Al3Ti composites. Fracture analysis reveals that a certain volume fraction of Ti layers can effectively prevent the crack propagation when the crack is extended to the interface, resulting in high tensile strength and acceptable ductility at the same time. The improvement of toughness is associated with crack deflection and crack bridging provided by the appropriate thickness of remaining α-Ti layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 90, November 2017, Pages 16-22
Journal: Intermetallics - Volume 90, November 2017, Pages 16-22
نویسندگان
Shaoyuan Lyu, Yanbo Sun, Lei Ren, Wenlong Xiao, Chaoli Ma,