English 
魏东博
教师个人信息组件组件异常,错误标识码6ST9v, 请查看错误日志

手机版

访问量:

最后更新时间:..

当前位置: 中文主页 >> 科学研究 >> 论文成果
Morphological Evolution of S-Phase in 2024 Aluminum under Tensile Creep at 448-463?K

点击次数:

所属单位:材料科学与技术学院

发表刊物:J Mater Eng Perform

摘要:The morphological evolution behavior of S-phase in 2024 aluminum alloy under uniaxial tensile creep test at 448 and 463 K under 175, 200 and 225 MPa was studied in detail by HRTEM. Results showed that the S-phase was arranged in the zigzag manner, similar to a zebra pattern, under tensile stress at 448-463 K. And it maintained cubic structure, remarkably grew along the tension direction under uniaxial tensile stress, but grew minimally perpendicular to the stress direction. Compared with applied stress, the temperature had a greater effect on the growth of S-phase. The length of S-phase reached 100 ± 20 nm after testing for 24 h at 448 K under 200 MPa and 200 ± 50 nm after testing for 18 h at 463 K under 175 MPa. The S-phase not only grew significantly in length but also coarsened at 463 K, the lamellar structure becoming fuzzy, which caused the alloy to enter the tertiary creep stage, unsuitable for creep-aging forming. © 2019, ASM International.

ISSN号:1059-9495

是否译文:

发表时间:2019-06-15

合写作者:Yang, Kai,张平则,Li, Fengkun,Liang, Hongxuan,姚正军

通讯作者:魏东博

版权所有©2018- 南京航空航天大学·信息化处(信息化技术中心)