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| 铝合金时效-屈服强度的实验与模型化研究 | |
| 引用本文： | 张国君,刘刚,丁向东,孙军,陈康华.铝合金时效-屈服强度的实验与模型化研究[J].金属学报,2003,39(8):803-808. |
| 作者姓名： | 张国君 刘刚 丁向东 孙军 陈康华 |
| 作者单位： | 1. 西安交通大学金属材料强度国家重点实验室,西安,710049;西安理工大学材料科学与工程学院,西安,710048 2. 西安交通大学金属材料强度国家重点实验室,西安,710049 3. 中南大学粉末冶金国家重点实验室,长沙,410083 |
| 基金项目： | 国家重点基础研究发展规划资助项目 G1999064909 |
| 摘 要： | 以析出热力学、长大动力学及位错理论为基础，研究了铝合金在时效过程中盘／片状、棒／针状析出相尺寸、体积分数对时效合金强化效果的影响，从微观-宏观相结合的角度建立了具有盘／片状、棒／针状细小时效强化相铝合金的时效工艺-屈服强度量化模型，并通过513K温度下时效Al-Cu-Mg合金和463K温度下时效Al-Mg-Si合金的实验结果对模型进行了验证，取得了较满意的吻合结果，并对本模型的模拟精度与时效析出相参数之间的关系进行了讨论。 |
| 关 键 词： | 铝合金 析出相 屈服强度 解析模型 |
| 文章编号： | 0412-1961(2003)08-0803-06 |
| 修稿时间： | 2002年10月27 |
EXPERIMENT AND MODELING STUDY OF AGED ALUMINIUM ALLOYS STRENGTHENING RESPONSE |
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| ZHANG Guojun,LIU Gang,DING Xiangdong,SUN Jun,CHEN Kanghua State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an School of Materials Science & Engineering,Xi'an University of Technology,Xi'an State Key Laboratory for Powder Metallurgy,University of Southern Central China,Changsha.EXPERIMENT AND MODELING STUDY OF AGED ALUMINIUM ALLOYS STRENGTHENING RESPONSE[J].Acta Metallurgica Sinica,2003,39(8):803-808. | |
| Authors: | ZHANG Guojun LIU Gang DING Xiangdong SUN Jun CHEN Kanghua State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an School of Materials Science & Engineering Xi'an University of Technology Xi'an State Key Laboratory for Powder Metallurgy University of Southern Central China Changsha |
| Affiliation: | ZHANG Guojun,LIU Gang,DING Xiangdong,SUN Jun,CHEN Kanghua 1) State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049 2) School of Materials Science & Engineering,Xi'an University of Technology,Xi'an 710049 3) State Key Laboratory for Powder Metallurgy,University of Southern Central China,Changsha 410083 |
| Abstract: | Based on thermodynamics, kinetics, and dislocation theory, an unified model is established to describe the quantitative relations between yield strengths of aged Aluminium alloys and the sizes, volume percentages of plate/disc-shaped or rod/needle-shaped precipitates. It is then experimentally proved that the model is suitable to evaluate the aging strengthening of the precipitates for an Al-Cu-Mg alloy aged at 513 K and an Al-Mg-Si alloy aged at 463 K. Furthermore, the relationships between simulation precision of this model and parameters of precipitate are discussed with the aim of improving the present model. |
| Keywords: | Aluminium alloy precipitate yield strength aging strengthening model |
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