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Ding, Zongye; Hu, Qiaodan; Yang, Fan; Lu, Wenquan; Yang, Tianxing; Cao, Sheng; Li, Jianguo
Metallurgical and materials transactions. A, Physical metallurgy and materials science, 06/2020, Letnik: 51, Številka: 6Journal Article
The growth mechanisms of single- and variant-flake Al 3 Ni phases at the liquid Al/solid Ni interface during solidification were investigated by synchrotron radiography and 3D tomography. The single-flake Al 3 Ni in the form of an elongated diamond rod evolves from one needle-like grain. The variant-flake Al 3 Ni is formed by coalescence of several needle-like Al 3 Ni grains, and its growth is dominated by the creation and propagation of a pair or groups of screw dislocations with opposite signs.
