Acta Metall Sin  1998, Vol. 34 Issue (4): 437-442    DOI:

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MICROSTRUCTURE AND ALLOY ELEMENT DISTRIBUTION OF DIRECTIONALLY SOLIDIFITED Al_2O_3/Al-4.5Cu METAL MATRIX COMPOSITES

CHU Shuangjie; WU Renjie; YANG Chunsheng; XU Dong (The State Key Laboratory of Metal matrix Composites; Shanghai Jiaotong University; Shanghai 200030)

CHU Shuangjie; WU Renjie; YANG Chunsheng; XU Dong (The State Key Laboratory of Metal matrix Composites; Shanghai Jiaotong University; Shanghai 200030). MICROSTRUCTURE AND ALLOY ELEMENT DISTRIBUTION OF DIRECTIONALLY SOLIDIFITED Al_2O_3/Al-4.5Cu METAL MATRIX COMPOSITES. Acta Metall Sin, 1998, 34(4): 437-442.

Abstract References Related Articles Recommended Metrics Download:  PDF(1658KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The microstructure and the change of alloy elements distribution of Al2O3/Al-4.5 Cu composites have been studied by use of the newly developing ZMLMC directional solidification apparatus, experimental results showed: At solidification rate v=16.7 μm/s, the microstructure of directionally solidified Al2O3/Al-4.5Cu composites, was cell morphologies, there were no Al2O3 particles in the cell structures, as solidification rate was increased to 49.8μm/s, its microstructureswere dendrites morphologies, particles were uniformly distributed in dendrites; with increase of solidification rate, the primary and secondary dendrite arm spacings decreased, the distributionof Cu element in the vicinity of liquid-solid interface was also changed regularly. Key words:  metal matrix composite      directional solidification      microstructure      liquid-solid interface      Received:  18 April 1998      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/Y1998/V34/I4/437 1 Hu M S, Yang J, Cao H C, Evans A G, Mehrabianetal. Acta Metall Mater, 1992; 40: 2315 2 Samuel A M, Samuel F H J Mater Sci, 1994; 29: 3591 3王浩伟,李建国.张国定、吴人洁、高宝禄,周尧和.复合材料学报,1995;12:10(Wang Haowei, Li Jianguo, Zhang Guoding, Wu Renjie, Gao Baolu, Zhou Yaohe. Acta Mater Comp Sin, 1995; 12:10) 4 傅恒志.铸钢和铸造高温合金及其熔炼. 西安:西北工业大学出版社,1985:32 (Fu Hengzm.Casting Steel , Casting Superalloy and its Melting. Xi'an: orthwestern Polytechnic Uni Press; 1995: 32) 5Coriell S R, Me Fadden G B. Microsegregation During Directional Solidificationeds in Fundamental of Alloy Solidification Applied to Industrial Process. 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