Crack Initiation and Propagation in Rotating Bending Fatigue of Ti-6Al-4V Alloy.
نویسندگان
چکیده
منابع مشابه
Fatigue of Ti-6Al-4V
Metallic biomaterials have essentially three fields of use; these are the artificial hip joints, screw, plates and nails for internal fixation of fractures, and dental implants. Any of these devices must support high mechanical load and resistance of material against breakage is essential. High mechanical properties are needed for structural efficiency of surgical and dental implants. But their...
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Nowadays modification of metallic biomaterials which are used as implants for bone and hard tissues replacement is considered as an important subject. In the current study, corrosion fatigue properties of Ti-6Al-4V alloy investigated via Rotating-Bending standard test method and then, the results compared with the fatigue properties of the specimens tested in the same conditions. Scanning elect...
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A B S T R A C T Effect of microstructure on mixed-mode (mode I II), high-cycle fatigue thresholds in a Ti-6Al-4V alloy is reported over a range of crack sizes from tens of micrometers to in excess of several millimeters. Specifically, two microstructural conditions were exam-inedÐa fine-grained equiaxed bimodal structure (grain size $20 mm) and a coarser lamellar structure (colony size $500 m...
متن کاملMixed-mode, high-cycle fatigue-crack growth thresholds in Ti– 6Al–4V: Role of small cracks
There have been few studies to date describing fatigue-crack propagation thresholds under mixed-mode loading conditions in the presence of cracks, that are small as compared to the characteristic microstructural dimensions. To address this need, the variation in mixed-mode, high-cycle fatigue-crack growth thresholds with crack size is reported for a Ti-6Al-4V turbine blade alloy with a fine-gra...
متن کاملFatigue endurance of Ti-6Al-4V alloy with electro-eroded surface for improved bone in-growth.
Ti-6Al-4V hour-glass shaped rotating beam specimens with duplex microstructure were processed by electric discharge machining (EDM). A comparatively high peak current of 29A was utilized in order to increase surface roughness for improved osteointegration. High cycle fatigue (HCF) tests were performed in rotating beam loading (R=-1) on these EDM specimens and results were compared with electrol...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1992
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.41.1485