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自然时效及预变形对人工时效后Al-Cu-Mg合金力学性能的影响
发表时间：2020-10-10 浏览量：1125 下载量：174
| 全部作者： | 权力伟，王传财，邱辉 |
| 作者单位： | 河北工业大学材料科学与工程学院；天津中德应用技术大学机械工程学院；东北大学秦皇岛分校资源与材料学院 |
| 摘 要： | 为研究Al-Cu-Mg合金在热处理工艺中固溶处理后放置于室温下的影响，本文研究了自然时效对人工时效后Al-Cu-Mg合金力学性能的影响。采用不同Cu/Mg比的Al-4Cu-1.6Mg、Al-4Cu-0.6Mg、Al-4Cu-0.3Mg三种合金在经过自然时效5 h和48 h后再进行170℃人工时效，测定其硬度值。结果表明，自然时效5 h与自然时效48 h对随后人工时效的峰值硬度值影响不大；自然时效48 h的Al-4Cu-1.6Mg合金在随后人工时效初期硬度值会下降；Al-4Cu-1.6Mg合金的峰值硬度高于Cu/Mg比更高的合金Al-4Cu-0.6Mg以及Al-4Cu-0.3Mg. 此外，研究了预变形对人工时效后Al-4Cu-1.6Mg合金硬度的影响，预变形量大的合金峰值硬度高，且达到峰值硬度所需的时效时间短。 |
| 关 键 词： | 金属材料；Al-Cu-Mg合金；自然时效；硬度；人工时效 |
| Title： | Effect of natural aging and pre-strain on the mechanical property of artificially aged Al-Cu-Mg alloy |
| Author： | QUAN Liwei, WANG Chuancai, QIU Hui |
| Organization： | School of Materials Science and Engineering, Hebei University of Technology; School of Mechanical Engineering, Tianjin Sino-German University of Applied Sciences; School of Resourse and Materials, Northeastern University at Qinhuangdao |
| Abstract： | In order to investigate the effect of storing at room temperature after solution treatment during the heat treatment process of Al-Cu-Mg alloy, this paper studied the effect of natural aging on the mechanical properties of Al-Cu-Mg alloy after artificial aging. Al-4Cu-1.6Mg, Al-4Cu-0.6Mg and Al-4Cu-0.3Mg alloys with different Cu/Mg ratio were artificially aged at 170℃ after natural aging for 5 h and 48 h to determine their hardness values. The results showed that there was no obvious difference of the peak hardness between the alloys natural aging for 5 h and 48 h. The hardness of Al-4Cu-1.6Mg alloy decreased at the initial stage of the artificial aging after natural aging for 48 h. The peak hardness of Al-4Cu-1.6Mg alloy was higher than that of Al-4Cu-0.6Mg and Al-4Cu-0.3Mg alloy with the higher Cu/Mg ratio. Besides, it was also studied the effect of the pre-strain on the hardness of artificially aged Al-4Cu-1.6Mg alloy. It was found that the peak hardness of the alloy with larger deformation was higher, and the time to reach to the peak hardness was also shortened. |
| Key words： | metallic materials; Al-Cu-Mg alloy; natural aging; hardness; artificial aging |
| 发表期数： | 2020年9月第3期 |
| 引用格式： | 权力伟，王传财，邱辉. 自然时效及预变形对人工时效后Al-Cu-Mg合金力学性能的影响[J]. 中国科技论文在线精品论文，2020，13（3）：234-240. |
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