6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

秦国梁; 张坤; 张文斌; 武传松

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6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

秦国梁, 张坤, 张文斌, 武传松

文章导航 > 焊接学报 > 2010 > (11): 5-8

秦国梁, 张坤, 张文斌, 武传松. 6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响[J]. 焊接学报, 2010, (11): 5-8.

引用本文:

秦国梁, 张坤, 张文斌, 武传松. 6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响[J]. 焊接学报, 2010, (11): 5-8.

QIN Guoliang, ZHANG Kun, ZHANG Wenbin, WU Chuansong. Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (11): 5-8.

Citation:

QIN Guoliang, ZHANG Kun, ZHANG Wenbin, WU Chuansong. Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (11): 5-8.

6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

1.
山东大学现代焊接技术研究所, 济南 250061
2.
中国航空工业集团公司北京航空材料研究院, 北京 100095

基金项目: 国家自然科学基金资助项目(51075174)

Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint

1.
Research Institute of Advanced Welding Technology, Jinan 250061, China
2.
Beijing Institute of Aeronautical Materials, Beijing 100095, China

摘要: 针对2 mm厚6013-T4铝合金薄板进行了搅拌摩擦焊接工艺试验,用搅拌头旋转速度和焊接速度的比值ω/v表征搅拌摩擦焊的热输入,试验研究了焊接热输入对接头的焊缝成形和力学性能的影响,并分析了接头的显微组织.结果表明,搅拌摩擦焊接头的综合性能较好,抗拉强度和屈服强度分别达到母材的83.3%和75.8%;在不同的搅拌头旋转速度下,随着焊接热输入的增加,接头的屈服强度和抗拉强度降低;ω/v在3 r/mm左右,焊缝成形美观,飞边毛刺少.母材为板条状组织;热影响区晶粒与母材相似,但稍微有粗化;热力影响区的晶粒极不均匀,既有等轴晶,也有拉长的带状组织;焊核区为细小的等轴晶组织.
- 搅拌摩擦焊 /
- 铝合金 /
- 热输入 /
- 组织性能 /
- 焊缝成形
Abstract: 2 mm Al 6013-T4 alloy thin plates were welded by friction stir welding in experiment,and the ratio of rotating speed of the stir pin to the welding speed ω/v,was used to indicate the friction stir welding heat input.The effect of friction stir welding heat input on the weld appearance and mechanical properties of the joint was studied and the microstructure of the joint was analyzed.The results show that the 6013-T4 Al alloy joint by friction stir welding has the better mechanical properties,the yield strength and tensile strength of the joint can reach up to 75.8% and 83.3%,respectively,ant they decrease with the heat input being increased at the different rotating speed of the stir pin.When the ω/v is 3 round/mm or so,the 6013-T4 Al alloy weld appearance will be good with few flashes.The analysis on the microstructure of the joint shows that the microstructure in the base metal is lath,the microstructure in the heat affected zone is similar to and little larger than that in the base metal.The microstructure in thermal-mechanical affected zone is much coarse and uneven in size,which includes the equiaxed grains and some elongated banded microstructure.In weld nugget zone,the microstructure consists of fine equiaxed grains.
- friction stir welding /
- Al alloy /
- heat input /
- microstructure and properties /
- weld appearance

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6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

1. 山东大学现代焊接技术研究所, 济南 250061

2. 中国航空工业集团公司北京航空材料研究院, 北京 100095

基金项目: 国家自然科学基金资助项目(51075174)

收稿日期: 2010-06-10

关键词:

搅拌摩擦焊 /

铝合金 /

热输入 /

组织性能 /

焊缝成形

摘要: 针对2 mm厚6013-T4铝合金薄板进行了搅拌摩擦焊接工艺试验,用搅拌头旋转速度和焊接速度的比值ω/v表征搅拌摩擦焊的热输入,试验研究了焊接热输入对接头的焊缝成形和力学性能的影响,并分析了接头的显微组织.结果表明,搅拌摩擦焊接头的综合性能较好,抗拉强度和屈服强度分别达到母材的83.3%和75.8%;在不同的搅拌头旋转速度下,随着焊接热输入的增加,接头的屈服强度和抗拉强度降低;ω/v在3 r/mm左右,焊缝成形美观,飞边毛刺少.母材为板条状组织;热影响区晶粒与母材相似,但稍微有粗化;热力影响区的晶粒极不均匀,既有等轴晶,也有拉长的带状组织;焊核区为细小的等轴晶组织.

English Abstract

Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint

1. Research Institute of Advanced Welding Technology, Jinan 250061, China

2. Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received Date: 2010-06-10

Keywords:

Abstract: 2 mm Al 6013-T4 alloy thin plates were welded by friction stir welding in experiment,and the ratio of rotating speed of the stir pin to the welding speed ω/v,was used to indicate the friction stir welding heat input.The effect of friction stir welding heat input on the weld appearance and mechanical properties of the joint was studied and the microstructure of the joint was analyzed.The results show that the 6013-T4 Al alloy joint by friction stir welding has the better mechanical properties,the yield strength and tensile strength of the joint can reach up to 75.8% and 83.3%,respectively,ant they decrease with the heat input being increased at the different rotating speed of the stir pin.When the ω/v is 3 round/mm or so,the 6013-T4 Al alloy weld appearance will be good with few flashes.The analysis on the microstructure of the joint shows that the microstructure in the base metal is lath,the microstructure in the heat affected zone is similar to and little larger than that in the base metal.The microstructure in thermal-mechanical affected zone is much coarse and uneven in size,which includes the equiaxed grains and some elongated banded microstructure.In weld nugget zone,the microstructure consists of fine equiaxed grains.

秦国梁, 张坤, 张文斌, 武传松. 6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响[J]. 焊接学报, 2010, (11): 5-8.

引用本文:

秦国梁, 张坤, 张文斌, 武传松. 6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响[J]. 焊接学报, 2010, (11): 5-8.

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6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint

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6013-T4铝合金薄板搅拌摩擦焊热输入对焊缝成形及组织性能的影响

1. 山东大学现代焊接技术研究所, 济南 250061 2. 中国航空工业集团公司北京航空材料研究院, 北京 100095

English Abstract

Effect of friction stir welding heat input on weld appearance and mechanical properties of 6013-T4 Al alloy joint

1. Research Institute of Advanced Welding Technology, Jinan 250061, China 2. Beijing Institute of Aeronautical Materials, Beijing 100095, China

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目录

1. 山东大学现代焊接技术研究所, 济南 250061

2. 中国航空工业集团公司北京航空材料研究院, 北京 100095

1. Research Institute of Advanced Welding Technology, Jinan 250061, China

2. Beijing Institute of Aeronautical Materials, Beijing 100095, China