کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10620886 988724 2007 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and texture evolution during equal channel angular extrusion of interstitial-free steel: Effects of die angle and processing route
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Microstructure and texture evolution during equal channel angular extrusion of interstitial-free steel: Effects of die angle and processing route
چکیده انگلیسی
Die angle (Φ) and processing route are two important factors that greatly impact microstructure and texture developments during equal channel angular extrusion (ECAE). In this study, the microstructure and texture evolution in interstitial-free steel during ECAE using a Φ = 120° die are investigated for up to four passes via three routes (A, BC and C). Finite element simulations and polycrystal modeling using the Taylor and viscoplastic self-consistent models are conducted to help understand deformation behavior and texture formation. Transmission electron microscopy results reveal remarkable microstructural differences between various observation planes for each billet. The effects of Φ and processing route are discussed by comparing the current results with those for the same material processed via the same routes but using a Φ = 90° die. The efficiency of grain refinement is found to be only mildly dependent on Φ and processing route. The textures can be completely characterized by predefined ideal fibers, regardless of processing route and pass number. With the exception of even-numbered passes in route C, textures developed after the same route and pass number, but different Φ can be approximately related by a rotation about the axis normal to the flow plane and the rotation angle is half of the Φ difference.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 55, Issue 3, February 2007, Pages 1017-1032
نویسندگان
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