کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11003930 | 1463706 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of crystallographic orientation on fatigue crack initiation behavior in Ti-6Al-4V
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The influence of microstructure on crack initiation behavior of Ti-6Al-4V was investigated by using atomic force microscope (AFM) and electron backscattered diffraction (EBSD). This research considers the effects of both the Schmid factor (SF) value and the slip direction of the grain on fatigue crack initiation sites. The result shows that fatigue cracks tend to form basal slips in primary α grains. In addition, these cracks are generated from primary α grains with relatively high basal SF values. However, it was found that fatigue cracks do not necessarily originate from basal planes of primary α grain with the maximum SF value. Finally, a new parameter that combines SF and the slip angle Ω (slip angle Ω is the angle between the specimen surface and the slip direction) was suggested and that parameter enables to predict fatigue crack initiation sites, since it was revealed that fatigue cracks initiated from primary α grains with high SFsinΩ values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 117, December 2018, Pages 371-383
Journal: International Journal of Fatigue - Volume 117, December 2018, Pages 371-383
نویسندگان
Shun Sasaoka, Jinta Arakawa, Hiroyuki Akebono, Atsushi Sugeta, Yoshihisa Shirai, Eisuke Nakayama, Yukihiko Kimura,