Acta Metall Sin  1993, Vol. 29 Issue (4): 1-6    DOI:

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EFFECT OF LIQUID FLOW ON PRIMARY ARM SPACINGS OF CONSTRAINED COLUMNAR CRYSTALS

LIU Shan;LU Deyang;HUANG Tao;ZHOU Yaohe National Lab of Solidification Processing; Northwestern Polytechnical University; Xi'an lecturer;National Laboratory of Solidification Processing;Northwestern Polytechnical University; Xi'an; 710072

LIU Shan;LU Deyang;HUANG Tao;ZHOU Yaohe National Lab of Solidification Processing; Northwestern Polytechnical University; Xi'an lecturer;National Laboratory of Solidification Processing;Northwestern Polytechnical University; Xi'an; 710072. EFFECT OF LIQUID FLOW ON PRIMARY ARM SPACINGS OF CONSTRAINED COLUMNAR CRYSTALS. Acta Metall Sin, 1993, 29(4): 1-6.

Abstract References Related Articles Recommended Metrics Download:  PDF(1527KB)  Export:  BibTeX | EndNote (RIS)       Abstract  An experimental apparatus, which has a convection generator and anaid-heater, is developed for the study of the effect of stable laminar liquid flow on thedirectional solidification process by the use of transparent alloy SCN-2wt-% Ace. The flowis perpendicular to primary arms. By,in-situ observation and photographing at different spe-cific moments, it has been found that such a flow can cause a great change in primaryspacings of constrained columnar crystals: for cells, the spacings become smaller; but fordendrites, they become larger. The former is mainly due to the tilted growth of upstreamsidebranches, while the latter is mainly due to the coupling effect of liquid flow with solutal fieldaround dendrite tips. The faster the liquid flows, the further smaller the cells space and thefurther larger the dendrites space. Key words:  forced liquid flow      directional solidification      dendrite spacing      cell spacing      Received:  18 April 1993      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1993/V29/I4/1 1 Verhoven J. Metall Trans, 1971; 2: 2673 2 任忠呜,大连理工大学博士学位论文,1988 3 Okamoto T. Kishtake K. Bessho I. J Cryst Growth, 1975: 29: 131 4 黄卫东,西北工业大学博士学位论文,1989 5 Brattkus K, Davis S H. J Cryst Growth, 1988; 87: 385 6 Huang S C, Glicksman M E. Acta Metall, 1981; 29: 717 7 黄韬,鲁德洋,周尧和,西北工业大学学报,1988;6(1) :41 [1] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [2] MA Dexin, ZHAO Yunxing, XU Weitai, WANG Fu. Effect of Gravity on Directionally Solidified Structure of Superalloys[J]. 金属学报, 2023, 59(9): 1279-1290. [3] SU Zhenqi, ZHANG Congjiang, YUAN Xiaotan, HU Xingjin, LU Keke, REN Weili, DING Biao, ZHENG Tianxiang, SHEN Zhe, ZHONG Yunbo, WANG Hui, WANG Qiuliang. 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[J]. 金属学报, 2023, 59(12): 1568-1580. [4] LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, HE Jie. Microstructure Formation in Directionally Solidified Pb-Al Alloy[J]. 金属学报, 2022, 58(8): 1072-1082. [5] CHEN Ruirun, CHEN Dezhi, WANG Qi, WANG Shu, ZHOU Zhecheng, DING Hongsheng, FU Hengzhi. Research Progress on Nb-Si Base Ultrahigh Temperature Alloys and Directional Solidification Technology[J]. 金属学报, 2021, 57(9): 1141-1154. [6] ZHANG Xiaoli, FENG Li, YANG Yanhong, ZHOU Yizhou, LIU Guiqun. Influence of Secondary Orientation on Competitive Grain Growth of Nickel-Based Superalloys[J]. 金属学报, 2020, 56(7): 969-978. [7] ZHANG Jian,WANG Li,WANG Dong,XIE Guang,LU Yuzhang,SHEN Jian,LOU Langhong. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2019, 55(9): 1077-1094. [8] XU Qingyan,YANG Cong,YAN Xuewei,LIU Baicheng. Development of Numerical Simulation in Nickel-Based Superalloy Turbine Blade Directional Solidification[J]. 金属学报, 2019, 55(9): 1175-1184. [9] Hui FANG,Hua XUE,Qianyu TANG,Qingyu ZHANG,Shiyan PAN,Mingfang ZHU. Dendrite Coarsening and Secondary Arm Migration in the Mushy Zone During Directional Solidification:[J]. 金属学报, 2019, 55(5): 664-672. [10] Yan YANG, Guangyu YANG, Shifeng LUO, Lei XIAO, Wanqi JIE. Microstructures and Growth Orientation of Directionally Solidification Mg-14.61Gd Alloy[J]. 金属学报, 2019, 55(2): 202-212. [11] JIN Hao, JIA Qing, LIU Ronghua, XIAN Quangang, CUI Yuyou, XU Dongsheng, YANG Rui. Seed Preparation and Orientation Control of PST Crystals of Ti-47Al Alloy[J]. 金属学报, 2019, 55(12): 1519-1526. [12] Yuan HOU, Zhongming REN, Jiang WANG, Zhenqiang ZHANG, Xia LI. Effect of Longitudinal Static Magnetic Field on the Columnar to Equiaxed Transition in Directionally Solidified GCr15 Bearing Steel[J]. 金属学报, 2018, 54(5): 801-808. [13] Lin LIU, Dejian SUN, Taiwen HUANG, Yanbin ZHANG, Yafeng LI, Jun ZHANG, Hengzhi FU. Directional Solidification Under High Thermal Gradient and Its Application in Superalloys Processing[J]. 金属学报, 2018, 54(5): 615-626. [14] Huijun KANG, Jinling LI, Tongmin WANG, Jingjie GUO. Growth Behavior of Primary Intermetallic Phases and Mechanical Properties for Directionally Solidified Al-Mn-Be Alloy[J]. 金属学报, 2018, 54(5): 809-823. [15] Yanqing SU, Tong LIU, Xinzhong LI, Ruirun CHEN, Jingjie GUO, Hengzhi FU. The Evolution of Seeding Technique for the Lamellar Orientation Controlling of γ-TiAl Based Alloys[J]. 金属学报, 2018, 54(5): 647-656. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed