کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5352084 | 1503678 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic fracture characteristics of Fe78Si9B13 metallic glass subjected to laser shock loading
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dynamic fracture characteristics of Fe78Si9B13 metallic glass subjected to laser shock loading Dynamic fracture characteristics of Fe78Si9B13 metallic glass subjected to laser shock loading](/preview/png/5352084.png)
چکیده انگلیسی
The response of the Fe78Si9B13 metallic glass under different ratio of laser beam diameter (d) to die hole diameter (D) in micro scale laser punching was investigated. The typical fracture surface morphologies were observed using scanning electron microscope. The influence of the ratio d/D on dynamic deformation and fracture of metallic glasses foils was characterized. The results show that the dynamic fracture behavior of the Fe78Si9B13 metallic glass is sensitive to the ratio d/D. In the case of d/DÂ =Â 1.75, the fracture surface is occupied by numerous liquid droplets, indicating that the temperature rise in an adiabatic shear band is beyond the melting temperature of the material. On the other hand, the fracture surface is covered dominantly with a mixture of shear steps, cellular patterns, liquid droplets and melted belts at d/DÂ =Â 0.70. According to the general mechanical analysis, the specimen fails in a shear fracture mode at d/DÂ =Â 1.75 due to the existence of shear stresses, while the fracture occurs in a tensile fracture mode at d/DÂ =Â 0.70 under the effect of bidirectional tensile stresses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 286, 1 December 2013, Pages 121-125
Journal: Applied Surface Science - Volume 286, 1 December 2013, Pages 121-125
نویسندگان
Chao Zheng, Sheng Sun, Libin Song, Guofang Zhang, Yiguo Luan, Zhong Ji, Jianhua Zhang,