| Publication Type |
Journal Article |
| School or College |
College of Engineering |
| Department |
Materials Science & Engineering |
| Creator |
Liu, Feng |
| Other Author |
Lu, Guang-Hong; Zhang, Ying; Deng, Shenghua; Wang, Tianmin; Kohyama, Masanori; Yamamoto, Ryoichi; Horikawa, Keitaro; Kanno, Motohiro |
| Title |
Origin of intergranular embrittlement of Al alloys induced by Na and Ca segregation: grain boundary weakening |
| Date |
2006-06 |
| Description |
Using a first-principles computational tensile test, we show that the ideal tensile strength of an Al grain boundary (GB) is reduced with both Na and Ca GB segregation. We demonstrate that the fracture occurs in the GB interface, dominated by the break of the interfacial bonds. Experimentally, we further show that the presence of Na or Ca impurity, which causes intergranular fracture, reduces the ultimate tensile strength when embrittlement occurs. These results suggest that the Na/Ca-induced intergranular embrittlement of an Al alloy originates mainly from the GB weakening due to the Na/Ca segregation. |
| Type |
Text |
| Publisher |
American Physical Society |
| Journal Title |
Physical Review B |
| Volume |
73 |
| Issue |
22 |
| DOI |
10.1103/PhysRevB.73.224115 |
| citatation_issn |
1098-0121 |
| Subject |
Intergranular embrittlement; Grain boundary; Intergranular fracture |
| Subject LCSH |
Aluminum alloys; Aluminum alloys -- Embrittlement; Aluminum alloys -- Fracture; Grain boundaries |
| Language |
eng |
| Bibliographic Citation |
Lu, G. H., Zhang, Y., Deng, S., Wang,T., Kohyama, M., Yamamoto, R., Liu, F., Horikawa, K., & Kanno, M. (2006). Origin of intergranular embrittlement of Al alloys induced by Na and Ca segregation: grain boundary weakening. Physical Review B, 73(22), 224115. |
| Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevB.73.224115 |
| Format Medium |
application/pdf |
| Format Extent |
319,729 bytes |
| Identifier |
ir-main,12143 |
| ARK |
ark:/87278/s6d515bw |
| Setname |
ir_uspace |
| ID |
705128 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6d515bw |
