铝/黄铜异种金属TIG填丝熔钎焊工艺

周利; 李志勇; 赵洪运; 黄永宪; 谢宇; 陶戢; 冯吉才

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铝/黄铜异种金属TIG填丝熔钎焊工艺

周利, 李志勇, 赵洪运, 黄永宪, 谢宇, 陶戢, 冯吉才

文章导航 > 焊接学报 > 2016 > 37(12): 17-20

周利, 李志勇, 赵洪运, 黄永宪, 谢宇, 陶戢, 冯吉才. 铝/黄铜异种金属TIG填丝熔钎焊工艺[J]. 焊接学报, 2016, 37(12): 17-20.

引用本文:

周利, 李志勇, 赵洪运, 黄永宪, 谢宇, 陶戢, 冯吉才. 铝/黄铜异种金属TIG填丝熔钎焊工艺[J]. 焊接学报, 2016, 37(12): 17-20.

ZHOU Li, LI Zhiyong, ZHAO Hongyun, HUANG Yongxian, XIE Yu, TAO Ji, FENG Jicai. TIG welding-brazing for Al/Cu dissimilar metals using filler material[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(12): 17-20.

Citation:

ZHOU Li, LI Zhiyong, ZHAO Hongyun, HUANG Yongxian, XIE Yu, TAO Ji, FENG Jicai. TIG welding-brazing for Al/Cu dissimilar metals using filler material[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(12): 17-20.

铝/黄铜异种金属TIG填丝熔钎焊工艺

1.
哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209
2.
哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001
3.
中国石油天然气管道局国际事业部, 廊坊 065000
4.
哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209;哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

基金项目: 国家自然科学基金资助项目（51205084）；教育部留学回国人员科研启动基金资助项目

TIG welding-brazing for Al/Cu dissimilar metals using filler material

1.
Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
2.
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
3.
International Department, China Petroleum Pipeline Bureau, Langfang 065000, China
4.
Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

摘要: 采用TIG熔钎焊进行5052铝合金和H62黄铜搭接，选用Al-12% Si药芯焊丝作为填充材料，并对接头微观组织和力学性能进行分析.结果表明，Al-12% Si药芯焊丝在黄铜母材表面润湿性较差，较难获得优质的熔钎焊接头.焊缝中黄铜侧界面层附近过渡区内铝含量较高，与部分熔化和溶解的黄铜母材形成了尺寸较大的条状AlCu金属间化合物相，严重影响接头力学性能.黄铜母材侧界面层由两层不同的金属间化合物相组成，从焊缝到黄铜母材分别为Cu₉Al₄和CuZn.拉伸试验中，试样断裂于黄铜侧过渡区或界面层，断口呈现解理断裂的特征.
- 铝/黄铜异种金属 /
- 熔钎焊 /
- 药芯焊丝 /
- 微观组织 /
- 力学性能
Abstract: 5052 aluminum alloy and H62 brass dissimilar metals were lap welded by TIG welding-brazing with Al-12%Si flux-cored wire as filler material. Microstructure and mechanical properties of the joint were studied.High-quality welded-brazed joint is difficult to be obtained due to the poor wettability of molten Al-12Si filler material on the surface of brass. Larger size strips of AlCu IMCs are formed in the transition zone at brass side due to the high Al content in the filler material and which reacted with the partially melted and dissolved brass base metal.The formation of Cu₉Al₄ IMC strips severely weak the mechanical properties of joint.The interface layer at brass side consists of two kinds of IMCs layers, which are Cu₉Al₄ and CuZn from the weld to the brass base metal, respectively.Tensile test indicated that the joint fractures at the transition zone or interface layer of the brass side with cleavage fracture surface.
- Al/brass dissimilar metals /
- TIG welding-brazing /
- flux-cored wire /
- microstructure /
- mechanical properties

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铝/黄铜异种金属TIG填丝熔钎焊工艺

1. 哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209

2. 哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

3. 中国石油天然气管道局国际事业部, 廊坊 065000

4. 哈尔滨工业大学(威海)山东省特种焊接重点实验室, 威海 264209;哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

基金项目: 国家自然科学基金资助项目（51205084）；教育部留学回国人员科研启动基金资助项目

收稿日期: 2014-12-10

关键词:

熔钎焊 /

摘要: 采用TIG熔钎焊进行5052铝合金和H62黄铜搭接，选用Al-12% Si药芯焊丝作为填充材料，并对接头微观组织和力学性能进行分析.结果表明，Al-12% Si药芯焊丝在黄铜母材表面润湿性较差，较难获得优质的熔钎焊接头.焊缝中黄铜侧界面层附近过渡区内铝含量较高，与部分熔化和溶解的黄铜母材形成了尺寸较大的条状AlCu金属间化合物相，严重影响接头力学性能.黄铜母材侧界面层由两层不同的金属间化合物相组成，从焊缝到黄铜母材分别为Cu₉Al₄和CuZn.拉伸试验中，试样断裂于黄铜侧过渡区或界面层，断口呈现解理断裂的特征.

English Abstract

TIG welding-brazing for Al/Cu dissimilar metals using filler material

1. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China

2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

3. International Department, China Petroleum Pipeline Bureau, Langfang 065000, China

4. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

Received Date: 2014-12-10

Keywords:

Abstract: 5052 aluminum alloy and H62 brass dissimilar metals were lap welded by TIG welding-brazing with Al-12%Si flux-cored wire as filler material. Microstructure and mechanical properties of the joint were studied.High-quality welded-brazed joint is difficult to be obtained due to the poor wettability of molten Al-12Si filler material on the surface of brass. Larger size strips of AlCu IMCs are formed in the transition zone at brass side due to the high Al content in the filler material and which reacted with the partially melted and dissolved brass base metal.The formation of Cu₉Al₄ IMC strips severely weak the mechanical properties of joint.The interface layer at brass side consists of two kinds of IMCs layers, which are Cu₉Al₄ and CuZn from the weld to the brass base metal, respectively.Tensile test indicated that the joint fractures at the transition zone or interface layer of the brass side with cleavage fracture surface.

周利, 李志勇, 赵洪运, 黄永宪, 谢宇, 陶戢, 冯吉才. 铝/黄铜异种金属TIG填丝熔钎焊工艺[J]. 焊接学报, 2016, 37(12): 17-20.

引用本文:

周利, 李志勇, 赵洪运, 黄永宪, 谢宇, 陶戢, 冯吉才. 铝/黄铜异种金属TIG填丝熔钎焊工艺[J]. 焊接学报, 2016, 37(12): 17-20.

Citation: