کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1581793 1514866 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of α platelet boundaries in a near-α titanium alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Investigation of α platelet boundaries in a near-α titanium alloy
چکیده انگلیسی

Transmission electron microscopy (TEM) of a bimodal near-α titanium alloy revealed the existence of retained β phase layers and silicide precipitates at the α platelet boundaries inside transformed β grains. The β to α phase transformation accompanied by the precipitation of silicide resulted in the formation of a large number of dislocations at α platelet boundaries. Orientation relationships between silicide, β phase and α phase were also identified. However high-resolution TEM (HRTEM) revealed crystal mismatches between these phases generating high strains at α platelet boundaries. The strengthening effects of the platelet boundaries are discussed in terms of dislocations slip across the boundaries. The mechanism that governs the β to α phase transformation is also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 492, Issues 1–2, 25 September 2008, Pages 450–454
نویسندگان
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