金属学报  1986, Vol. 22 Issue (4): 32-148

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Al-Si合金加Sr和加Sb变质的研究

黄良余;王玉琮;翟春泉;丁文江

上海交通大学材料科学及工程系;上海交通大学材料科学及工程系;上海交通大学材料科学及工程系;上海交通大学材料科学及工程系

INFLUENCE OF ADDITIVE Sr OR Sb ON MODIFICATION OF Al-Si ALLOYS

by HUANG Liangyu; WANG Yucong; ZHAI Chunquan; DING Wenjiang (Department of Materials Science and Engineering; Shanghai Jiaotong University)

黄良余;王玉琮;翟春泉;丁文江. Al-Si合金加Sr和加Sb变质的研究[J]. 金属学报, 1986, 22(4): 32-148.
, , , . INFLUENCE OF ADDITIVE Sr OR Sb ON MODIFICATION OF Al-Si ALLOYS[J]. Acta Metall Sin, 1986, 22(4): 32-148.

摘要 参考文献 相关文章 Metrics 全文: PDF(3187 KB)   摘要: 本文借助扫描电镜、电子探针等分析手段,详细地考察了Sr,Sb对纯度不同、成分不同的Al-Si合金在不同冷速下的变质作用,作出了五种Al-Si合金的含Sr(或Sb)量-冷却速度-显微组织的诺谟图,可供生产现场选择最佳加Sr、加Sb量作依据。实验结果表明,Al-Si合金加Sr后变质存在一个变质阈值,超过这个阈值时,即便在投缓慢的冷速(4.5℃/min)下,仍能获得完全变质的组织。这个变质阈值随着冷速的减慢而增大。Sr,Sb均能消除硅晶体的非自发形核基底,阻止初晶硅析出,但对共晶硅生长形态的影响不同。 Abstract：The modification of five Al-Si alloys of different purity and composition with 9—14 wt-% Si at various cooling rates influenced by an additive Sr or Sb has been investigated in detail by means of SEM, EPMA, etc. The microstructural nomograph of these Al-Si alloys is constructed to provide for the selection of optimum addition of Sr or Sb in production practice Experimental results indicate a threshold of Sr content in Al-Si alloy modification, over it, the structure of Al-Si alloy may be completely modified even at quite slow cooling rate down to 4.5℃/min. The threshold increases with the decrease of cooling rate Both Sr and Sb can retard the initiation of Si precipitation, but differ in the influence on the growth form of eutectic Si 收稿日期: 1986-04-18      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 黄良余 王玉琮 翟春泉 丁文江 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I4/32 1 Hess, P.D., Trans. Am. Foundrymen's Soc., 83 (1975) , 87． 2 Leandro, L.M.; Serafin, F.R., 43rd International Foundry Congress Paper, 1976, Bucharest Rumania. 3 Davami, P.; Ghafelehbashi, M., Br. Foundryman, 72 (1979) ,№ 1, 4． 4 French Paper: Trans. Am. Foundrymen's Soc., 86 (1978) , 549． 5 Jenkinson, D.C.; Hogan, L.M., J. Cryst. Growth. 28 (1975) , 171． 6 黄良余;翟春泉;林凡,铝硅合金新的变质方法,第三届全国铸造年会论文,1978． 7 津村善重;榊原秋策;璺田勝(氵郎),石川正武,轻金属,30(1980) ,239． 8 朱培钺,陈熙琛,贾均,张宝书;刘贤功,哈尔滨工业大学科学研究报告,第155期,1979． 9 Verhoeren,J.D.,物理冶金学基础,卢光熙;赵子伟译,上海科学技术出版社,1980,p.152．J No related articles found! Viewed Full text Abstract Cited   Shared      Discussed