| Configuration of yield zone for straight Volterra dislocation core | |
| Yu, ZW; Xu, XL; Liu, L | |
| Corresponding Author | Yu, ZW() |
| 2002-03-18 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 38Issue:3Pages:235-238 |
| Abstract | According to the elastic stress field in the isotropic medium and Mises yield rule, the configuration of yield zone for the straight Volterra dislocation core was calculated. The results show that in infinite elastic medium, the size of yield zone for a straight dislocation is directivity proportional to its Burgers vector b and shear modulus mu, but inversely to the yield strength sigma(s). The configuration of yield zone for a straight screw Volterra dislocation core is circular and yield radius r(s) is 4.1b and that for a straight edge Volterra dislocation core is a dumbbell-like, the maximum half width of yield zone on the sliding plane is 5.9b and minimum half width is 1.4b. In half infinite elastic medium, the yield zone of straight screw dislocation core would shift toward the free surface due to the effect of image force. The configuration of yield zone is dependent on the distance, 1, between the screw dislocation line and free surface parallel to it. When l > 2r(s), the configuration of yield zone for a screw dislocation core is egg-shaped, l = 2r(s), dropping-water like, and l < 2r(s), the yield zone would extend on the free surface. |
| Keyword | Volterra dislocation yield zone configuration |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000174931400003 |
| Publisher | SCIENCE CHINA PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/114058 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yu, ZW |
| Affiliation | 1.Dalian Univ Technol, Inst Met Mat & Technol, Dalian 116024, Peoples R China 2.Chinese Acad Sci, State Key Lab Fatigue & Fracture Mat, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Yu, ZW,Xu, XL,Liu, L. Configuration of yield zone for straight Volterra dislocation core[J]. ACTA METALLURGICA SINICA,2002,38(3):235-238. |
| APA | Yu, ZW,Xu, XL,&Liu, L.(2002).Configuration of yield zone for straight Volterra dislocation core.ACTA METALLURGICA SINICA,38(3),235-238. |
| MLA | Yu, ZW,et al."Configuration of yield zone for straight Volterra dislocation core".ACTA METALLURGICA SINICA 38.3(2002):235-238. |
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