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| 余热热处理对Al-Si-Cu合金铸件组织和性能的影响 | |
| 引用本文： | 何亮,黄天佑,康进武. 余热热处理对Al-Si-Cu合金铸件组织和性能的影响[J]. 材料热处理学报, 2007, 28(4): 69-73 |
| 作者姓名： | 何亮 黄天佑 康进武 |
| 作者单位： | 清华大学机械工程系,教育部先进成形制造重点实验室,北京,100084;清华大学机械工程系,教育部先进成形制造重点实验室,北京,100084;清华大学机械工程系,教育部先进成形制造重点实验室,北京,100084 |
| 基金项目： | 教育部留学回国人员科研启动基金 |
| 摘 要： | 研究了余热热处理工艺对Al-Si-Cu合金中Cu元素的固溶效果、共晶Si颗粒形貌及尺寸变化、以及该工艺对合金铸件力学性能的影响.结果表明,余热热处理工艺条件下,铸件可以在更短的时间内获得理想的固溶效果.通过分析铸件微观组织显微可知,余热热处理工艺可以通过缩短固溶处理时间有效地抑制共晶Si颗粒的粗化,在4h的固溶处理中Si颗粒平均尺寸持续减小且未出现粗化趋势.采用相同工艺参数,余热热处理工艺条件下制备的单铸试棒抗拉强度比传统T6热处理工艺提升约15%. |
| 关 键 词： | Al-Si-Cu合金 余热热处理 铸件力学性能 |
| 文章编号： | 1009-6264（2007）04-0069-05 |
| 修稿时间： | 2006-08-11 |
Effect of heat treatment on microstructure and tensile properties of 319 aluminum alloy |
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| HE Liang,HUANG Tian-you,KANG Jin-wu. Effect of heat treatment on microstructure and tensile properties of 319 aluminum alloy[J]. Transactions of Materials and Heat Treatment, 2007, 28(4): 69-73 | |
| Authors: | HE Liang HUANG Tian-you KANG Jin-wu |
| Affiliation: | Key laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
| Abstract: | The influence of T6 heat treatment with residual heat of casting on microstructure and mechanical property of Al-Si-Cu alloy castings was investigated.It is found that more amount of Cu is solutioned in Al matrix in a shorter time using the new processing.The dispersed Si particles can be observed and their coarsening during the solution treatment can be controlled effectively.In the first 4 hours of solution procedure,the Si particles are refined continually.The tensile strength of the alloy treated by present technology increases by about 15% compared with that of the traditionally T6 treated alloy. |
| Keywords: | 319 aluminum alloy casting remained heat treatment mechanical properties |
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