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13 偏离<001>方向不同角度的双晶竞争生长示意图

Fig.13 Schematics of competitive growth of bi-crystal including converging (a1-a3) and diverging (b1-b3) at different angles deviating from the direction of <001> (The red and blue dendrites represent the favorable dendrites (A small deviation from the <001> direction) and the unfavorable dendrites (a large deviation from the <001> direction), respectively)(a1, b1 and a3, b3) the favorable dendrites are in the same or the opposite orientation as the unfavorable dendrite, respectively (a2, b2) the favorable dendrite is parallel to the direction of heat flow