Al-0.53Zn合金近快速定向凝固条件下的胞晶间距选择

金属学报

1998, Vol. 34

Issue (12): 1267-1272

论文

本期目录 | 过刊浏览

Al-0.53Zn合金近快速定向凝固条件下的胞晶间距选择

冯坚;黄卫东;林鑫;李涛;薛玉芳;周尧和

西北工业大学凝固技术国家重点实验室;西安;710072;西北工业大学凝固技术国家重点实验室;西安;710072;西北工业大学凝固技术国家重点实验室;西安;710072;西北工业大学凝固技术国家重点实验室;西安;710072;西北工业大学凝固技术国家重点实验室;西安;710072;西北工业大学凝固技术国家重点实验室;西安;710072

CELLULAR SPACING SELECTION OF Al-0.53Zn ALLOY UNDER NEAR-RAPID DIRECTIONAL SOLIDIFICATION CONDITION

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

引用本文:

冯坚;黄卫东;林鑫;李涛;薛玉芳;周尧和. Al-0.53Zn合金近快速定向凝固条件下的胞晶间距选择[J]. 金属学报, 1998, 34(12): 1267-1272.
, , , , , . CELLULAR SPACING SELECTION OF Al-0.53Zn ALLOY UNDER NEAR-RAPID DIRECTIONAL SOLIDIFICATION CONDITION[J]. Acta Metall Sin, 1998, 34(12): 1267-1272.

全文: PDF(2252 KB)

摘要: 利用Bridgman装置考察了Al—0．53Zn单相合金在近快速定向凝固条件下的胞晶间距选择规律．结果表明：在给定的温度梯度下，随着生长速度的增大，定向凝固组织均为胞状晶，胞晶间距λ的分布存在一个较宽范围，其最大、最小及平均间距随生长速度v变化的实验规律可表示为：λmax＝948．51v(-0.4961),λmin＝661.16v-0.5015,KGT理论模型较好地预言了近快速定向凝固条件下胞晶平均间距选择的实验规律.台阶变速实验表明，胞晶平均间里的选择具有显著的历史相关性.

关键词 ： Al-Zn合金, 近快速定向凝固, 胞晶间距, 历史相关性

Abstract：In order to investigate the response of primary cellular/dendritic spacing selection to the variation of growth velocity under near-rapid directional solidification condition, anAl-0.53Zn alloy is directionally solidified with Bridgman apparatus. The results show that atthe given temperature gradient the microstructures is cells and there exists a wide distributionrange of cellular spacing. The maximum, A..., minimum, and average cellular spacing,A, as fullctions of growth rate, v, can be given by λmax=948.51v(-0.4961),λmin=661.16 v(-0.5015),λ=412.41 v(-0.5049), respectively. The experimental results are compared with that predicted bythe current KGT model, and a good agreement is found. Moreover, it is found that the averagecellular spacing is also remarkably history-dependent.

Key words： Al-Zn alloy near-rapid directional solidification cellular spacing selection history-dependence

基金资助:国家自然科学基金!59431012

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	冯坚
	黄卫东
	林鑫
	李涛
	薛玉芳
	周尧和
44.8K

链接本文:

https://www.ams.org.cn/CN/ 或 https://www.ams.org.cn/CN/Y1998/V34/I12/1267

1Warren J A, Langer J S. Phys Rev, 199O; A42: 3518
2 Warren J A, Langer J S. Phys Rev 1993; E47: 2702
3Lu shuzu,Hunt J D.J Cryst Growth,1992;123:17
4 Hunt J D, Lu Shuzu. Metall Mater Trans, 1996; A27: 611
5 Han S H,Trivedi R.Acta Metall Mater,1994242:25
6 Quested P N,McLean M.Mater,Sci Eng,1984;65:171
7 Chopra M A, Tewari S N. Metall Trans,1991; A22: 2467
8 Huang Weidong,Geng Xingguo,ZHou Yaohe,J Cryst Growth,1993;134:105
9 Ding G L, Huang W D, Huang X, Lin X, Zhou Y H. Acta Mater 1996; 44: 3705
10林鑫,黄卫东,潘清跃,丁国陆,薛玉芳,周尧和.金属学报,1997; 33: 1140 (Lin X, Huang W D, Pan Q Y, Ding G L, Xue Y F, Zhou Y H. Acta Metall Sin, 1997; 33: 1140)
11 Kurzw,Gioranola B,Trivedi R,Acta Metall,1986;34:823
12 Boettinger W J,Bendersky L A,Coriell R J.Schaefer R J.Biancaniello F S.J Cryst Growth,1987;80:17
13 Juarez-Islas J A,Jones H ,Kurz W .Mater Sci Eng ,1988;98:201
14 Juarez-Islas J A,Joues H.Acta Metall , 1987; 35:499
15 Gremaud M,Carrard M,Kurz w.Acta Metall Mater,1990;38:2587
16 Kurz W, Fisher D J Acta Metall, 1981; 29: 11
17 Trivedi R.Kurz W.Int Mater Rev,19942 3g:49
18 Hunt J D,Solidification and Casting of Metals London:The Metals Society ,1979:3
19 Sato T, Ito K, Ohira G Trans Jpn Inat Met, 1980; 21: 441
20 Lu S Z, Hunt J D, Gilgien P, Kurz W. Acta Metall Matet 1994; 42: 1653

[1]	侯丹辉, 梁松茂, 陈荣石, 董闯. 砂型铸造Mg-6Al-xZn合金凝固行为及晶粒尺寸^*[J]. 金属学报, 2014, 50(5): 601-609.
[2]	詹美燕,李春明,张卫文. 累积叠轧焊AZ31镁合金微观组织和织构演变的EBSD研究[J]. 金属学报, 2012, 48(6): 709-616.
[3]	谢玉张燕陈荣石韩恩厚. 铸造Mg-Al-Zn合金的成分、相组成与凝固路径的关系[J]. 金属学报, 2009, 45(11): 1396-1401.
[4]	林鑫;黄卫东;潘清跃;丁国陆;薛玉芳;周尧和. Al—4.5Cu单晶定向凝固一次枝晶间距研究[J]. 金属学报, 1997, 33(11): 1140-1146.
[5]	丁国陆;林鑫;黄卫东;周尧和. 定向凝固一次枝晶间距的历史相关性[J]. 金属学报, 1995, 31(10): 469-474.
[6]	刘山;鲁德洋;黄韬;周尧和. 液相流动对柱晶一次间距的影响[J]. 金属学报, 1993, 29(4): 1-6.
[7]	刘金水;舒震;李传平. Ti对高Al-Zn合金组织性能的影响[J]. 金属学报, 1993, 29(11): 9-13.

Viewed

Full text

Abstract

Cited

Shared

Discussed