纵向静磁场下单晶高温合金定向凝固籽晶回熔界面杂晶的形成与演化

苏震奇, 张丛江, 袁笑坦, 胡兴金, 芦可可, 任维丽, 丁彪, 郑天祥, 沈喆, 钟云波, 王晖, 王秋良

Formation and Evolution of Stray Grains on Remelted Interface in the Seed Crystal During the Directional Solidification of Single-Crystal Superalloys Assisted by Vertical Static Magnetic Field

SU Zhenqi, ZHANG Congjiang, YUAN Xiaotan, HU Xingjin, LU Keke, REN Weili, DING Biao, ZHENG Tianxiang, SHEN Zhe, ZHONG Yunbo, WANG Hui, WANG Qiuliang

图1 籽晶法定向凝固单晶高温合金样品及其显微组织

Fig.1 Single-crystal (SC) superalloy prepared by the seed crystal (a) and the magnified image in the red box in Fig.1a (b) (20 and 50 mm indicate the lengths of the used seed crystal and the master alloy rods, respectively. 0, 5, 15, 25, and 35 mm indicate the observed positions of the across section. The red box indicates the area where the remelted zone of the seed crystal. The white- and green-dotted lines show the positions of the fully remelted interface and the partially remelted interface, respectively)