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| 铝合金焊接接头冲击强化的性能 | |
| 引用本文： | 徐国建,钟立明,杭争翔,张超逸,王志一,沓名宗春. 铝合金焊接接头冲击强化的性能[J]. 焊接学报, 2014, 35(6): 57-60 |
| 作者姓名： | 徐国建 钟立明 杭争翔 张超逸 王志一 沓名宗春 |
| 作者单位： | 1.沈阳工业大学材料科学与工程学院, 沈阳 110870 |
| 基金项目： | 2013-2014年国家外国专家局“高端外国专家项目”(文教类GDW20122101064) |
| 摘 要： | 为了提高铝合金焊接接头的力学性能,试验分别采用超声波和调Q脉冲YAG激光对A6061-T6铝合金焊接接头焊趾附近处进行冲击强化,研究了超声波和激光冲击强化下铝合金焊接接头的性能.两种冲击强化模式下,铝合金焊接接头焊趾处近表面均发生了冲击强化效果,并产生了较大的残余压应力,超声波和激光冲击强化后产生的最大残余压应力分别为 -158 MPa和 -145 MPa左右.超声波与激光冲击强化铝合金焊接接头的疲劳寿命差别不大,均比焊态下试样的疲劳寿命提高1倍以上.两种冲击强化方法的疲劳试验样件断裂位置均发生在基体金属上,而焊趾处没有疲劳裂纹产生. |
| 关 键 词： | 激光冲击强化 超声波冲击强化 铝合金焊接接头 力学性能 |
| 收稿时间： | 2013-12-30 |
Performance of shock processing on aluminum alloy welded joint |
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| XU Guojian,ZHONG Liming,HANG Zhengxiaiig,ZHANG Chaoyi,WANG Zhiyi and MUNEHARU Kutsuna. Performance of shock processing on aluminum alloy welded joint[J]. Transactions of The China Welding Institution, 2014, 35(6): 57-60 | |
| Authors: | XU Guojian ZHONG Liming HANG Zhengxiaiig ZHANG Chaoyi WANG Zhiyi MUNEHARU Kutsuna |
| Affiliation: | 1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China2.Anshan Raycham Technology Limited Company, Anshan 114044, China3.Chao Yang Heavy Machinery Limited Company, Chaoyang 122000, China4.Adanced Laser Technology Research Center Limited Company, Anjo-shi 4460026, Japan |
| Abstract: | In order to improve the mechanical properties of aluminum alloy welded joints, this paper respectively applied ultrasonic and Q-switch YAG laser shock processing on the weld toe of A6061-T6 aluminum alloy welded joints to study the performances of aluminum alloy welded joints after shock processing. Under two shock processing modes, the near surface on weld toe of aluminum alloy welded joints generated shock strengthening effect,and greater compressive residual stress was produced. The maximum compressive residual stresses generated by ultrasonic and laser shock processing were about -158 MPa and -145 MPa, respectively. The fatigue life of aluminum alloy welded joints after ultrasonic and laser shock processing was similar, increased more than one time compared to that of the welded specimen without shock processing. All specimens during fatigue test fractured in the base metal, and no fatigue crack occurred near the weld toe. |
| Keywords: | laser shock processing ultrasonic shock processing aluminum alloy welded joint mechanical property |
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