Acta Metall Sin  1997, Vol. 33 Issue (11): 1140-1146    DOI:

Current Issue | Archive | Adv Search |

RESEARCH ON PRIMARY DENDRITIC SPACING IN UNIDIRECTIONAL SOLIDIFICATION OF Al-4.5Cu SINGLE CRYSTAL

LIN Xin;HUANG Weidong;PAN Qingyue;DING Guolu;XUE Yufang;ZHOU Yaohe(Stale Key Laboratory of Solidification Processing; Northwestern Polytechnical University; Xi'an 710072)

LIN Xin;HUANG Weidong;PAN Qingyue;DING Guolu;XUE Yufang;ZHOU Yaohe(Stale Key Laboratory of Solidification Processing; Northwestern Polytechnical University; Xi'an 710072). RESEARCH ON PRIMARY DENDRITIC SPACING IN UNIDIRECTIONAL SOLIDIFICATION OF Al-4.5Cu SINGLE CRYSTAL. Acta Metall Sin, 1997, 33(11): 1140-1146.

Abstract References Related Articles Recommended Metrics Download:  PDF(3236KB)  Export:  BibTeX | EndNote (RIS)       Abstract  In unidirectional solidification of Al-4.5Cu alloy,history-dependent selection of the primary dendritic spacing is systematically investigated by the experimental method of step-variation in growth rate. A single crystal is formed in the sample before each experimental run, so that the influence of crystal boundary on the primary spacing is avoided. It is found that the primary dendritic spacing is remarkably history-dependent in the metallic alloy as in the transparent model alloy. The average primary spacing is dependent not only on the current growth conditions as described in the previous models, but also on the way those conditions were achieved remarkably. There exists a wide allowable range of primary spacing for given growth conditions. The lower limit obtained experimentally is compared with that calculated theoretically with the Hunt-Lu model, which shows excellent fit between them. Key words:  primary dendritic spacing      unidirectional solidification      Al-4.5Cu single crystal      history-dependence      Received:  18 November 1997      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/Y1997/V33/I11/1140 1WarrenJA,LangerJS.PhysRev,1990;A42:3518 2WarrenJA,LangerJS.PhysRev,1993;E47:2702 3LuShuzu,HuntJD.JCrystGrowth,1992;123:17 4HuntJD,LuShuzu.MetallMaterTrans,1996;A27:611 5黄卫东,商宝禄,周尧和.航空学报,1992;13:A377 6HuangWeidong,GengXingguo,ZhouYaohe.JCrystGrowth,1993;134:105 7丁国陆,林鑫,黄卫东,周尧和.金属学报,1995;31:A469 8DingGL,HuangWD,HuangX,LinX,ZhouYH.ActaMater,1996;44:3705 9HanSH,TrivediR.ActaMetallMater,1994;42:25 10PrattRA,GrugelRN.MaterCharact,1993;31:225 11QuestedPN,McLeanM.MaterSciEng,1984;65:171 12ChopraMA,TewariSN.MetallTrans,1991;A22:2467 13林鑫.西北工业大学硕士学位论文,1996 14HuntJD.SolidificationandCastingofMetals.London:MetalsSociety,1979:3 15YoungKP,KirkwoodK.MetallTrans,1975;A6:197 16林鑫,黄卫东,丁国陆,王琦,周尧和.金属学报,1997;33:449R [1] YANG Qianqian, LIU Yuan, LI Yanxiang. MODELING AND SIMULATION OF STRUCTURAL FORMATION OF POROUS ALUMINUM IN GASAR SOLIDIFICATION[J]. 金属学报, 2014, 50(11): 1403-1412. [2] PENG Dongjian, LIN Xin, ZHANG Yunpeng, GUO Xiong, WANG Meng, HUANG Weidong. INVESTIGATION OF EFFECT OF INTERFACE ENERGY ANISOTROPY ON DENDRITIC GROWTH IN UNIDIRECTIONAL SOLIDIFICATION BY FRONT TRACKING SIMULATION[J]. 金属学报, 2013, 49(3): 365-371. [3] CHEN Liutao ZHANG Huawei LIU Yuan LI Yanxiang. EXPERIMENTAL RESEARCH ON HEAT TRANSFER PERFORMANCE OF DIRECTIOANLLY SOLIDIFIED POROUS COPPER HEAT SINK[J]. 金属学报, 2012, 48(3): 329-333. [4] GAN Chunlei LIU Xuefeng HUANG Haiyou XIE Jianxin. FABRICATION PROCESS, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF BFe10–1–1 ALLOY TUBES BY CONTINUOUS UNIDIRECTIONAL SOLIDIFICATION[J]. 金属学报, 2010, 46(12): 1549-1556. [5] QIAO Junwei ZHANG Yong CHEN Guoliang. SYNTHESIS OF PLASTIC Zr–BASED BULK METALLIC GLASS WITH CRYSTAL PHASE BY DIRECTIONAL SOLIDIFICATION[J]. 金属学报, 2009, 45(4): 410-414. [6] Hua-Wei ZHANG. The Critical Processing Conditions for Directional Solidification of Solid/Gas Eutectics[J]. 金属学报, 2007, 43(6): 589-594 . [7] Hua-Wei ZHANG. Difficulty in Fabricating Lotus-type Porous Al by Gasar Process[J]. 金属学报, 2007, 42(1): 11-16 . [8] . Preparation of high aluminum containing albronze alloy wires by continuous unidirectional solidification[J]. 金属学报, 2006, 42(12): 1243-1247 . [9] ZHANG Huawei; LI Yanxiang; LIU Yuan. Evaluation of Porosity in Lotus--Type Porous Cu Fabricated with Gasar Process[J]. 金属学报, 2006, 42(11): 1165-1170 . [10] ZHANG Huawei; LI Yanxiang; LIU Yuan. Gas Pressure Condition for Obtaining Uniform Lotus--Type Porous Structure by Gasar Process[J]. 金属学报, 2006, 42(11): 1171-1176 . [11] JIANG Chengbao; LIU Jinghua; ZHANG Tao; XU Huibin. The Solid-Liquid Interface Morphology of the Unidirectionally Solidified Ni2MnGa Magnetic Shape Memory Alloy[J]. 金属学报, 2004, 40(9): 975-980 . [12] CUI Hongbao; GUO Jingjie; BI Weisheng; SU Yanqing; WU Shiping; FU Hengzhi. THE EVOLUTION OF UNIDIRECTIONAL SOLIDIFI-CATION MICROSTRUCTURE OF THE Al-In MONOTECTIC ALLOYS IN HIGH TEMPERATURE GRADIENT[J]. 金属学报, 2004, 40(12): 1253-1256 . [13] FENG Jian; HUANG Weidong; LIN Xin; LI Tao; XUE Yeing; ZHOU Yaohe(State Key Laboratory of Solidification Processing; Northwestern Polytechnical University; Xi'an 710072)Correspondent:FENG Jian; Tel: (O29)-8494001; Fax: (0E9)-8491544;E-mail. Huang@nwpu.edu.cn Manuscript received 1998-03-10; in revised form 1998-06-01. CELLULAR SPACING SELECTION OF Al-0.53Zn ALLOY UNDER NEAR-RAPID DIRECTIONAL SOLIDIFICATION CONDITION[J]. 金属学报, 1998, 34(12): 1267-1272. [14] LIN Xin;HUANG Weidong;DING Guolu;WANG Qi;ZHOU Yaohe (State Key Laboratory of Solidification Processing; Northwestern Polytechnical University; Xi'an 710072). NUMERICAL STATISTICAL MODEL OF PRIMARY DENDRITIC SPACING[J]. 金属学报, 1997, 33(5): 449-454. [15] YAO Xianedong;ZHANG Jinghua;ZHANG Zhiya;LI Ying'ao;ZHAO Nairen;GUAN Hengrong;HU Zhuangqi(Institute of Metal Resecech;Chinese Academy of Sciences;Shenyang 110015)(Manuscript received 1994-06-06;in revised form 1995-02-26). EFFECT OF MINOR ELEMENTS ON MICROSTRUCTURE AND PROPERTIES IN A COBALT-BASE SUPERALLOY[J]. 金属学报, 1995, 31(7): 320-328. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed