کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7981431 1514746 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ti-6Al-4V welded joints via electron beam welding: Microstructure, fatigue properties, and fracture behavior
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Ti-6Al-4V welded joints via electron beam welding: Microstructure, fatigue properties, and fracture behavior
چکیده انگلیسی
The effect of microstructural characteristics on the fatigue properties of electron beam-welded joints of forged Ti-6Al-4V and its fracture behavior were investigated. Tensile tests and fatigue tests were conducted at room temperature in air atmosphere. The test data were analyzed in relation to microstructure, high-cycle fatigue properties, low-cycle fatigue properties, and fatigue crack propagation properties. The high-cycle fatigue test results indicated that the fatigue strength of the joint welded via electron beam welding was higher than that of the base metal because the former had a high yield strength and all high-cycle fatigue specimens were fractured in the base metal. Although the joint specimens had a lower low-cycle fatigue life than the base metal, they mainly ruptured at the fusion zone of the joint specimen and their crack initiation mechanism is load-dependent. The fatigue crack propagation test results show that the joint had a slower crack propagation rate than the base metal, which can be attributed to the larger grain in the fusion zone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 597, 12 March 2014, Pages 225-231
نویسندگان
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