Characterization of Precipitates in Bend-Age-Formed 2124 Aluminium Alloy
The precipitates of bending-age-formed ternary Al-4.31Cu-1.51Mg alloy were studied with load of 6.05 kg aged at 190°C. Transmission electron microscopy and electron diffraction has been used to observe the microstructures of the bend-age-formed alloy. The results show that there is no preferential alignment of S phase or GPB zones in the alloys with load compared with that without load. It is interesting to find that the length of S phase is shorter in age-formed sample than that without load. Dislocations generated after loaded can provide enough nucleation sites for the nucleation and growth of S phase.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
L. W. Quan et al., "Characterization of Precipitates in Bend-Age-Formed 2124 Aluminium Alloy", Advanced Materials Research, Vols. 194-196, pp. 1275-1279, 2011