Acta Metall Sin  1995, Vol. 31 Issue (11): 501-507    DOI:

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CELLULAR TO DENDRITIC TRANSITION OF DIRECTIONALLY SOLIDIFIED Al-Cu ALLOYS UNDER DIFFERENT GROWTH VELOCITIES

XU Daming;CAO Fuyang;LI Qingchun;WANG Yongqian;ZHANG Baoyou(Harbin Institute of Technology;Harbin 150001)(Manuscript received 1994-12-19;in revised form 1995-06-19)

XU Daming;CAO Fuyang;LI Qingchun;WANG Yongqian;ZHANG Baoyou(Harbin Institute of Technology;Harbin 150001)(Manuscript received 1994-12-19;in revised form 1995-06-19). CELLULAR TO DENDRITIC TRANSITION OF DIRECTIONALLY SOLIDIFIED Al-Cu ALLOYS UNDER DIFFERENT GROWTH VELOCITIES. Acta Metall Sin, 1995, 31(11): 501-507.

Abstract References Related Articles Recommended Metrics Download:  PDF(652KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Dendrite evolution from cellular structures of directionally solidified Al-2wt-% Cu and Al-4 wt-% Cu specimens under step and linear change of displacement velocity was studied with an improved experiment apparatus of directional solidification.The experimental results show that, although the dynamic process of cellular to dendritic transition becomes slow with decrease in the velocity change of specimen displacement,the instability and branching of the cellular structure will rapidly develop a dendritic strucutre after a certain disturbance of the cellular morphology.These dendrites could have various morphologies which are related to the acceleration. Key words:  dendritic growth      cellular to dendritic transition      dendrite morphology      directional solidification      Al-Cu alloys      Received:  18 November 1995      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/Y1995/V31/I11/501 1FlemingsMC,KattamisTZ,BardesBP．TransAmFoundrymen'sSoc,1991;99:5012JacksonKA,HuntJD,UhlmannDR,SewardTP．TransTMSAIME,1966;236:1493YoungKP,KirkwoodDH．MetallTrans,1975;6A:1974李庆春,安阁英,唐多光．哈尔滨工业大学学报,1981;(3):15黄卫东,周尧和．金属学报,1991;27:A866HuntJD．SolidificationandCastingsofMetals．London:TheMetalsSociety,1979:17TrivediR．JCrystGrowth．1980;49:2198KurzW,FisherDJ．ActaMetall,1981;29:119徐达鸣,李庆春．金属科学与工艺,1988;7(3):4710曹福洋．哈尔滨工业大学硕士学位论文,哈尔滨,1994z [1] 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. [2] 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. [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] 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. [13] 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. [14] 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. [15] Guohua WU, Yushi CHEN, Wenjiang DING. Current Research and Future Prospect on Microstructures Controlling of High Performance Magnesium Alloys During Solidification[J]. 金属学报, 2018, 54(5): 637-646. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed