| Autor: |
Minqiang Gao, Enyu Guo, Zongning Chen, Huijun Kang, Tongmin Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Journal of Materials Research and Technology, Vol 22, Iss , Pp 3146-3155 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2238-7854 |
| DOI: |
10.1016/j.jmrt.2022.12.145 |
| Popis: |
Effect of micropore defects on the tensile stress–strain response and damage behavior in a B4Cp/6061Al composite was investigated via establishing an actual three-dimensional (3D) finite element model based on a representative volume element (RVE). The incorporated 3D microstructure was achieved by synchrotron radiation X-ray computed microtomography (SR-μCT). RVE-I consists of B4C particles, matrix, and micropore defects, while the micropore defects are artificially filled by matrix in the RVE-II. The simulation results demonstrate that compared with the RVE-II, the presence of micropore defects in the RVE-I leads to a lower tensile property which is close to the experimental result. Matrix damage associated with the micropore defects that are composed of voids from cracking particles and voids near particle/matrix interfaces is revealed by analyzing the distribution of strain and stress. Furthermore, different damage processes observed in two RVEs, indicating that the micropore defects play a significant role in determining the crack propagation path. This work offers a reference for studying the mechanical behavior of particle-reinforced aluminum matrix composites from a novel perspective. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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