Effect of Retrogression and Re-Aging on Microstructures and Mechanical Properties of an Al-Cu-Mg Alloy

Jia, Yongxin; Su, Ruiming; Liao, Hongyu; Li, Guanglong; Qu, Yingdong; Li, Rongde

doi:10.1007/s11665-022-07170-z

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…It can be seen from Figure 11 a,b that the type and morphology of precipitates generated by the two are the same [ 46 ], the generation of precipitates from rolled 2024Al has obvious orientation [ 47 ], and the as-cast 2024Al has no orientation. According to the statistics of the number density of precipitates, it is found that the number density of precipitates of as-cast 2024Al is 5.0 × 10 9 cm −2 , while the number density of precipitates of rolled 2024Al is 9.1 × 10 9 cm −2 , obviously higher than as-cast 2024Al, as shown in Figure 11 c. The different orientation of precipitates is mainly due to the existence of a certain habit plane between the formation of precipitates and the matrix, and the change in grain orientation will occur during rolling.…”

Section: Resultsmentioning

confidence: 99%

Effect of Lattice Constants and Precipitates on the Dimensional Stability of Rolled 2024Al during Isothermal Aging

et al. 2023

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The change in material dimensional will lead to the decline of instrument accuracy and reliability. In this paper, the characterization and analysis of the lattice constant, precipitates, and dislocation density of the material by X-ray diffraction (XRD) and transmission electron microscopy (TEM) reveals the reason why the relative dimensional change in the rolled 2024Al is one order of magnitude lower than that of the as-cast 2024Al during isothermal aging. Compared with as-cast 2024Al, the dislocation density of rolled 2024Al is higher, the lattice constant decreases less before and after aging, and the precipitates have orientation and more content, resulting in the dimensional change in rolled 2024Al being smaller than that of as-cast 2024Al. In addition, two main reasons for decreasing the dimensional change in rolled 2024Al are discussed: the decrease in lattice constant, the formation and growth of the S phase before and after aging.

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Section: Resultsmentioning

confidence: 99%