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金属学报  2003, Vol. 39 Issue (1): 43-46     
  论文 本期目录 | 过刊浏览 |
Be对铸态Al-11Si-0.3Mg合金时效效果的影响
王桂青;边秀房;张均艳
山东大学材料液态结构及其跗性教育部重点实验室;济南 250061;山东建筑工程学院材料科学与工程系;济南 250014
Effect of Be on the Age-Hardening Characteristics of As-Cast Al-11Si-0.3Mg Alloy
WANG Guiqing; BIAN Xiufang; ZHANG Junyan
Key Laboratory of Liquid Structure and Heredity of Materials; Ministry of Education; Shandong University; Jinan 250061;Department of Material Science and Technology; Shandong architectural engineering institute; Jinan 250014
引用本文:

王桂青; 边秀房; 张均艳 . Be对铸态Al-11Si-0.3Mg合金时效效果的影响[J]. 金属学报, 2003, 39(1): 43-46 .
, , . Effect of Be on the Age-Hardening Characteristics of As-Cast Al-11Si-0.3Mg Alloy[J]. Acta Metall Sin, 2003, 39(1): 43-46 .

全文: PDF(161 KB)  
摘要: 采用差分扫描量热分析和硬度测定手段,研究了元素Be对铸态Al-11Si-0.3Mg(质量分数,%)合金时效效果的影响.结果表明:在Al-11Si-0.3Mg合金中加入0.25%的Be,铸态时效时硬化相析出速度加快,析出热效应增大,时效硬化效果明显增加.动力学分析表明:亚稳相 β’的析出符合Avrami公式,Be的加入对亚稳相β’的生长方式参数n影响不大,但明显增大了亚稳相β’的形核率参数k.金属型铝硅合金铸件中存在很多空位“陷阱”,Be与空位结合阻止空位迁移消失可以解释Be对亚稳相β’形核率的影响.
关键词 铝硅合金Be添加铸态时效    
Key words
收稿日期: 2002-03-21     
ZTFLH:  TG166.9  
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