کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
829468 1470341 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Notch tensile behavior of extruded Mg–Y–Zn alloys containing long period stacking ordered phase
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Notch tensile behavior of extruded Mg–Y–Zn alloys containing long period stacking ordered phase
چکیده انگلیسی


• The notch tensile behavior of Mg–RY–Zn alloys was investigated.
• The NSR values are larger than 1 in the investigated alloys from RT to 250 °C.
• The NSR value rises with the RY content increasing.
• Elevating the test temperature, the NSR value rises.

The notch tensile behavior of extruded Mg–6RY–4Zn and Mg–9RY–4Zn (RY: Y-rich misch metal) alloys containing long period stacking ordered (LPSO) phase tested from room temperature to 250 °C was investigated. LPSO long-strips crack more severely in notch samples compared with that in smooth samples. The UTS values are above 300 MPa and the notch sensitivity ratio (NSR) values are larger than 1 in both alloys because the severe crack of LPSO phase costs more energy in notch samples. Furthermore, the NSR value rises with increasing the RY content or elevating the test temperature. The strengthening effect of LPSO phase is more remarkable at high temperatures. The notch leads the fracture mode of the two alloys changing from ductile fracture to brittle fracture. Designing complex shape components should consider the NSR and plasticity of Mg–Y–Zn alloys together.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 56, April 2014, Pages 495–499
نویسندگان
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