کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1579695 1001229 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On characterization of deformation microstructure in Boron modified Ti–6Al–4V alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
On characterization of deformation microstructure in Boron modified Ti–6Al–4V alloy
چکیده انگلیسی

Addition of boron in small quantities to various titanium alloys have shown significant improvement in mechanical behavior of materials. In the present study, electron back-scatter diffraction (EBSD) techniques have been applied to investigate the deformation microstructure evolution in boron modified two-phase titanium alloy Ti–6Al–4V. The alloy was hot compressed at 750 °C up to 50% height reduction at two different strain rates (10−3 s−1 and 1 s−1). The EBSD analyses indicated significant differences in deformed microstructure of the base alloy and the alloy containing boron. A strong subgrain formation tendency was observed along with inhomogeneous distribution of dislocations inside large α colonies of Ti64. In contrast, α colonies were relatively strain free for Ti64 + B, with more uniform dislocation density distribution. The observed difference is attributed to microstructural modifications viz. grain size refinement and presence of TiB particles at grain boundary produced due to boron addition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 528, Issue 1, 25 November 2010, Pages 449–458
نویسندگان
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