| 7085铝合金固溶温度预热后的大应变变形强化 |
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| 引用本文： | 许晓静,吴桂潮,王彬,张福豹,罗勇,宋涛,成城,潘励,程晓农.7085铝合金固溶温度预热后的大应变变形强化[J].上海交通大学学报,2011,45(6):911-914. |
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| 作者姓名： | 许晓静 吴桂潮 王彬 张福豹 罗勇 宋涛 成城 潘励 程晓农 |
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| 作者单位： | (江苏大学 先进成形技术研究所， 江苏 镇江 212013) |
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| 基金项目： | 江苏省科技支撑计划项目(BE2008118); 国家自然科学基金项目(51074079); 江苏大学拔尖人才基金项目(1211110001) |
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| 摘 要： | 提出了一种工艺性能好并能将位错强化和其他强化机制有机结合的超高强7085铝合金制备技术路线，即先在固溶处理温度对7085铝合金进行预热，然后，进行铝合金冷却速度较快的大应变变形等通道转角挤压(ECAP）加工.结果表明，ECAP加工对7085铝合金产生的强化与所用模具的温度密切相关，与模具温度为400 °C的ECAP加工相比，模具温度为室温的ECAP加工对7085铝合金的强化效果显著.基于Taylor公式的定量计算结果表明，该显著的强化主要不是来自于位错强化的增加，而是来自于其他强化机制（沉淀强化、晶界/亚晶界强化等）的作用.
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| 关 键 词： | 超高强铝合金 大应变变形 强化机制 |
| 收稿时间： | 2010-07-01 |
Strengthening of 7085 Al Alloy by Large Strain Deformation with the Alloy Preheated at Solution Treatment Temperature |
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| XU Xiao-jing,WU Gui-chao,WANG Bing,ZHANG Fu-bao,LUO Yong,SONG Tao,CHENG Cheng,PAN Li,CHENG Xiao-nong.Strengthening of 7085 Al Alloy by Large Strain Deformation with the Alloy Preheated at Solution Treatment Temperature[J].Journal of Shanghai Jiaotong University,2011,45(6):911-914. |
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| Authors: | XU Xiao-jing WU Gui-chao WANG Bing ZHANG Fu-bao LUO Yong SONG Tao CHENG Cheng PAN Li CHENG Xiao-nong |
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| Institution: | (Institute of Advanced Forming Technology, Jiangsu University, Zhenjiang 212013, Jiangsu, China) |
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| Abstract: | A new precedure to prepare ultra-high strength aluminum alloy was proposed.The procedure is carried out through subjecting the aluminum alloy pre-heated at solid solution treatment temperature to the large strain deformation(equal-channel angular pressing,i.e.ECAP) with appropriately quick cooling of the alloy.This approach can process low ductility aluminum alloy and has the potential of adding dislocation strengthening and other strengthening together to significantly strengthen the alloy.The experimental... |
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| Keywords: | ultra-high strength Al alloy large strain deformation strengthening mechanism |
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