کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576677 | 1514784 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of heat treatment on microstructure and creep properties of hot continuous rolled Ti-6Al-4V alloy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The influence of heat treatments on microstructure and creep behavior of hot rolled (HR) Ti-6Al-4V alloy is investigated. Results show that the microstructure of HR alloy consists of needle-like β phase distributed within stripe-like α phase. After long term aging (LTA), significant amount of particle-like β phase precipitates within α phase. After solution treatment at 940 °C and aging, the microstructure of the alloy consists of the “basket weave” structure with high volume fraction and the equiaxed α phase. Under the condition of the applied stress of 575 MPa at 400 °C, creep lifetimes of HR alloy treated by long term aging and solution treatment at 940 °C increase from 72 h to 230 h and 548 h, respectively. During the creep, deformation mechanism of HR alloy solution treated at 940 °C is significant amount of ãa+cã dislocations with wave-like feature activated on pyramidal plane of α phase. Deformation mechanism of HR-LTA alloy is the slip of ãcã dislocation with hook-like feature activated on cylindrical plane of α phase, and dense dislocations may be concentrated to form the subgrains due to the occurrence of dynamic recrystallization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 401-406
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 401-406
نویسندگان
Xiao Li, Tian Sugui, Bao Xianyu, Chen Liqing,