Nucleation of solid phase and evolution of equated dendrites. The dendrite arms are often fragmented. The detached arms act as a seed of solid grain.
Al-Cu（アルミニウムと銅合金）での固相の核生成とデンドライトの発達、さらにデンドライトアームの溶断。デンドライトの枝はさまざまな原因で切断されることがあります。
Relevant literature: "Dendrite fragmentation induced by massive-like δ–γ transformation in Fe–C alloys", H. Yasuda, K. Morishita, N. Nakatsuka, T. Nishimura, M. Yoshiya, A. Sugiyama, K. Uesugi, A. Takeuchi, Nature Communications 10 (2019) 1–5. DOI:10.1038/s41467-019-11079-y
"In situ observation of nucleation, fragmentation and microstructure evolution in Sn-Bi and Al-Cu alloys", H. Yasuda, Y. Yamamoto, N. Nakatsuka, T. Nagira, M. Yoshiya, A. Sugiyama, I. Ohnaka, K. Umetani, K. Uesugi, International Journal of Cast Metals Research 21 (2008) 125–8. DOI:10.1179/136404608X361800
"In situ observation of nucleation, fragmentation and microstructure evolution in Sn-Bi and Al-Cu alloys", H. Yasuda, Y. Yamamoto, N. Nakatsuka, T. Nagira, M. Yoshiya, A. Sugiyama, I. Ohnaka, K. Umetani, K. Uesugi, International Journal of Cast Metals Research 21 (2008) 125–8. DOI:10.1179/136404608X361800

свернуть