| 快速凝固耐热铝合金AA8009Nd:YAG激光焊接 |
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| 引用本文： | 丁荣辉,黎文献,王日初,余琨. 快速凝固耐热铝合金AA8009Nd:YAG激光焊接[J]. 焊接学报, 2007, 28(9): 33-38 |
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| 作者姓名： | 丁荣辉 黎文献 王日初 余琨 |
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| 作者单位： | 中南大学,材料科学与工程学院,长沙,410083;中南大学,材料科学与工程学院,长沙,410083;中南大学,材料科学与工程学院,长沙,410083;中南大学,材料科学与工程学院,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 快速凝固耐热铝合金AA8009的焊接技术是该合金实用化过程中必须解决的关键问题之一.试验采用不同工艺参数对1 mm厚AA8009板材进行了对接焊.结果表明,随着焊接速度增加,焊接热输入量减少,焊缝冷却速度增加,焊缝组织得到改善,由平衡态向非平衡态组织转变,焊接接头抗拉强度和显微硬度增加.当焊接热输入量为8.15 J/mm,焊缝抗拉强度达到379.9 MPa,焊接系数达到95%,断裂发生在熔化区边界.
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| 关 键 词： | 快速凝固 耐热铝合金 激光焊接 |
| 文章编号： | 0253-360X（2007）09-033-06 |
| 收稿时间： | 2006-04-16 |
| 修稿时间： | 2006-04-16 |
Nd:YAG laser welding of rapid-solidfied heat-resistant aluminum alloy AA8009 |
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| DING Ronghui,LI Wenxian,WANG Richu and YU Kun. Nd:YAG laser welding of rapid-solidfied heat-resistant aluminum alloy AA8009[J]. Transactions of The China Welding Institution, 2007, 28(9): 33-38 |
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| Authors: | DING Ronghui LI Wenxian WANG Richu YU Kun |
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| Affiliation: | Colledge of Materials Science and Technology, Center South University, Changsha 410083, China,Colledge of Materials Science and Technology, Center South University, Changsha 410083, China,Colledge of Materials Science and Technology, Center South University, Changsha 410083, China and Colledge of Materials Science and Technology, Center South University, Changsha 410083, China |
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| Abstract: | Welding of rapid-solidfied heat-resistant aluminum alloy AA8009 is very important to its application.Different welding parameter were used in the Nd:YAG laser butt welding of 1mm thick AA8009 plate.The results show that, with the welding speed increase, and the total energy input decreases, and the cooling rate within the weld increases, and the weld microstructure are improved and changed from equilibrum state to non-equilibrum state microstructure. When the energy input is 8.15 J/mm, the tensile strength reaches 379.9 MPa, that the weld coeffcient reached to 95% and the fracture happens at the boundary fusion zone. |
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| Keywords: | rapid-solidfied heat-resistant aluminum alloy AA8009 Nd:YAG laser welding |
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