6061-T6铝合金超声辅助搅拌摩擦焊接头的组织与力学性能

宁朝阳; 任成高

doi:10.11973/jxgccl201511014

6061-T6铝合金超声辅助搅拌摩擦焊接头的组织与力学性能

湖南工业职业技术学院，长沙 410208

基金项目:

湖南省科技厅科技计划项目(2014FJ3115)

湖南省教育厅科学研究项目(15C0448)

详细信息

作者简介:
宁朝阳(1973-),男,湖南衡南人，副教授，硕士。

中图分类号: TG453.9
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出版历程
- 收稿日期: 2015-09-09
- 刊出日期: 2015-11-19

Microstructure and Mechanical Properties of Ultrasonic-Assisted Friction Stir Welded Joint of 6061-T6 Aluminum Alloy

摘要

摘要: 对3 mm厚6061-T6铝合金板进行超声辅助搅拌摩擦焊(UA-FSW)，研究了UA-FSW接头的焊接质量、力学性能、拉伸断口形貌以及焊核区的组织，并与FSW接头的进行了对比。结果表明：UA-FSW能有效减少焊接缺陷，拓宽焊接工艺窗口;两种接头的显微硬度曲线均呈“W”形，焊核区均呈“洋葱环”特征，但UA-FSW接头焊核区的“洋葱环”更为流畅;与FSW接头相比，UA-FSW接头的硬度和拉伸性能更高，断口上的韧窝更多、更深，焊核区的晶粒更小、更均匀。
- 超声辅助搅拌摩擦焊 /
- 6061-T6铝合金 /
- 组织 /
- 力学性能
Abstract: Ultrasonic-assisted friction stir welding (UA-FSW) was carried on 6061-T6 aluminum alloy plates with thickness of 3 mm, and the welding quality and mechanical properties of UA-FSW joint were studied, as well as tensile fracture and microstructure of weld nugget zone, and compared with those of FSW joint. The results show that UA-FSW could effectively reduced welding defects and widen welding process window. For the two joint, microhardness curves all exhibited “W” shape, and “onion ring” feature was found in weld nugget zone, but more smooth “onion ring” were obtained in UA-FSW joint. Comparing with FSW joint, UA-FSW joint owned higher microhardness and tensile properties, more and deeper dimples on tensile fracture, and smaller and more uniform grains in weld nugget zone.
- ultrasonic-assisted friction stir welding(UA-FSW) /
- 6061-T6 aluminum alloy /
- microstructure /
- mechanical property

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参考文献(12)

[1]	THOMAS W M, NICHOLAS E D, NEEDHAM J C,et al. Friction-stir butt welding［P/OL］.［2015-04-10］.http:∥ci.nii.ac.jp/naid/10017153069#cit.
[2]	MISHRA R S, MAHONEY M W. Friction stir processing a new grain refinement technique to achieve high strain rate superlasticity in commercial alloys［J］.Materials Forum,2001,357:507-514.
[3]	赵亚东,张运真,何强. 6061-T6铝合金搅拌摩擦焊接头的组织和性能［J］. 机械工程材料,2014,38(8):93-100.
[4]	李铁龙,杨新岐,王振山. 焊速对AZ80镁合金搅拌摩擦焊接头成形及组织的影响［J］. 机械工程材料,2013,37(5):26-29.
[5]	张腾,何宇廷,伍黎明,等. 2524-T3铝合金搅拌摩擦焊对接接头的疲劳性能［J］. 机械工程材料,2012,36(5):47-49.
[6]	FENG Z, GOULD J E, LIENERT T J. A heat flow model for friction stir welding of aluminum alloys［J］. Hot Deformation of Aluminum Alloys Ⅱ, 1998,7(2):149-158.
[7]	SONG M, KOVACEVIC R .Thermal modeling of friction stir welding in a moving coordinate system and its validation［J］. International Journal of Machine Tools and Manufacture,2003,43(6):605-601.
[8]	HU Z M, HU B. Numeric model of welding temperature in friction stir welding and affection factors［J］.Chinese Journal of Mechanical Engineering,2006，42(7)：235-238.
[9]	应崇福.超声学［M］.北京：科学出版社，1990:7-8.
[10]	贺地求. 超声搅拌焊接方法及其装置:中国,200610004059.3［P］. 2006-09-27.
[11]	武传松,刘小超,张皓庭. 超声振动辅助搅拌摩擦焊装置:中国,201210244175.8［P］. 2012-11-21.
[12]	PARK K, KIM B, NI J. Numerical simulation of plunge force during the plunge phase of friction stir welding and ultrasonic assisted FSW［C］//ASME 2008 International Mechanical Engineering Congress and Exposition.［S.l］:American Society of Mechanical Engineers, 2008: 237-242.

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6061-T6铝合金超声辅助搅拌摩擦焊接头的组织与力学性能

作者简介: 宁朝阳(1973-),男,湖南衡南人，副教授，硕士。

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出版历程

Microstructure and Mechanical Properties of Ultrasonic-Assisted Friction Stir Welded Joint of 6061-T6 Aluminum Alloy

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目录

作者简介:
宁朝阳(1973-),男,湖南衡南人，副教授，硕士。