Comparative Study on Properties of 6B82 Al-Sc Alloy and 6082 Al-MG-Si Alloy FSW Joint

ZHAO Qifang; XU Hongji; ZHAO Xiaodong; ZHU Houchun

doi:10.7512/j.issn.1001-2303.2025.09.11

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Comparative Study on Properties of 6B82 Al-Sc Alloy and 6082 Al-MG-Si Alloy FSW Joint
Vol. 55, Issue 9, Pages: 108-113(2025)
Received：20 March 2025，

Revised：2025-04-17，

Published：20 September 2025
DOI： 10.7512/j.issn.1001-2303.2025.09.11
稿件说明：

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赵琦璠，许鸿吉，赵晓东，等.6B82铝钪合金与6082铝镁硅合金FSW接头性能对比研究［J］.电焊机，2025，55（9）：108-113. DOI： 10.7512/j.issn.1001-2303.2025.09.11.

ZHAO Qifang, XU Hongji, ZHAO Xiaodong, et al.Comparative Study on Properties of 6B82 Al-Sc Alloy and 6082 Al-MG-Si Alloy FSW Joint[J].Electric Welding Machine, 2025, 55(9): 108-113. DOI： 10.7512/j.issn.1001-2303.2025.09.11.

摘要

采用搅拌摩擦焊对6B82铝钪合金与6082铝镁硅合金进行焊接，并对比分析两种铝合金焊接接头的力学性能、疲劳性能和耐腐蚀性能。结果表明，6B82铝钪合金接头具有更好的塑性和韧性，而6082铝镁硅合金接头强度略高。两种焊接接头的硬度分布趋势相似，均呈现“W”形；均具有良好的耐腐蚀性能；疲劳试验结果显示，6B82铝钪合金与6082铝镁硅合金焊接接头（去余高）指定寿命为1×10

次循环下的中值疲劳极限分别为99 MPa与102.5 MPa，SEM扫描显示疲劳断口终断区为典型的韧窝形貌。研究结果表明，6B82 铝钪合金焊接接头在满足轻量化需求的同时，其综合性能满足轨道交通关键材料连接的要求，为轨道交通领域轻量化材料的开发和应用提供了重要参考。

Abstract

FSW was used to weld 6B82 aluminum scandium alloy with 6082 aluminum magnesium silicon alloy

and the mechanical properties

fatigue performance

and corrosion resistance of the two aluminum alloy welding joints were compared and analyzed. The results show that the 6B82 aluminum scandium alloy joint has better plasticity and toughness

while the strength of the 6082 aluminum magnesium silicon alloy joint is slightly higher. The hardness distribution trends of the two welding joints are similar

both showing a "W" shape; both have good corrosion resistance; fatigue test results show that the specified life of the 6B82 aluminum scandium alloy and 6082 aluminum magnesium silicon alloy welding joints (with excess height removed) under 1×10

cycles is 99 MPa and 102.5 MPa respectively

and SEM scanning shows that the final fracture zone of the fatigue fracture is a typical dimple morphology. The research results show that the 6B82 aluminum scandium alloy welding joint meets the requirements of lightweight design while having comprehensive performance to meet the r

equirements of key material connections in the field of rail transportation.

关键词

Keywords

references

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