کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
766342 1463080 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fracture toughness of the materials in welded joint of X80 pipeline steel
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Fracture toughness of the materials in welded joint of X80 pipeline steel
چکیده انگلیسی


• Fracture toughness of welded joint of X80 pipeline steel is studied.
• Fracture toughness test is conducted with a new non-contact double-extensometer vision system.
• The HAZ is embrittled in different degrees, because of M–A constituents.
• It is observed the fusion zone is the fracture risk zone of the X80 steel weldment.

The microstructures, mechanical properties and fracture toughness of the materials in different locations of the welded joint of the X80 pipeline steel were studied at room temperature. Elastic–plastic fracture toughness testing of crack tip opening displacement (CTOD) and J-integral of the welding materials and base material were conducted. A new non-contact double-clip gauge measuring system was developed and used in the fracture toughness tests. It was observed the fusion zone (FZ) was the fracture risk zone of the X80 steel weldment; and the occurrence of hard-brittle martensite–austenite (M–A) constituents was a significant because of welding hardening and embrittlement.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 148, November 2015, Pages 337–349
نویسندگان
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