کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1637658 1517017 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cavity nucleation during hot forging of Ti-6Al-2Zr-1Mo-1V alloy with colony alpha microstructure
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Cavity nucleation during hot forging of Ti-6Al-2Zr-1Mo-1V alloy with colony alpha microstructure
چکیده انگلیسی

The initiation sites and influencing factors of cavity nucleation were investigated for a Ti-6Al-2Zr-1Mo-1V alloy with lamellar starting structure, using the isothermal hot compression test. All samples were deformed to a true strain of 0.70 in the temperature range of 750-950 °C and strain rate range of 0.001-10 s−1. The corresponding microstructures were observed by means of the metallurgical microscopy and scanning electron microscopy (SEM). It was found that all cavities occurred at the bulge regions of the compression specimens. Most of cavities nucleated along prior beta boundaries oriented 45° to the compression axis, while others nucleated at the interfaces of lamellar alpha colonies. Cavity nucleation was inhibited with increasing the volume fraction of beta phase and the volume fraction spheroidized of lamellar alpha phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Issue 12, December 2010, Pages 2259-2264