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推进剂贮箱用2A14铝合金接头应力腐蚀性能研究 被引量:3

Stress Corrosion Study of 2A14 Alloy Joint Used on Propellant Tank
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摘要 为了研究推进剂贮箱用2A14铝合金接头介质相容性,分析了铝合金的应力腐蚀机理,以2A14-T6铝合金本体、搅拌摩擦焊(FSW)接头和变极性氩弧焊(VPTIG)接头为研究对象,通过慢应变速率拉伸法进行应力腐蚀试验研究。结果表明,2A14铝合金在3.5%NaCl溶液中存在应力腐蚀现象,FSW接头的抗腐蚀性能优于VPTIG接头。。 In order to study the compatibility of 2A14 alloy joint used on propellant tank, stress corrosion mech- anism of aluminum alloy was analysized in this paper. The base metal, FSW joint and VPTIG joint of 2A14-T6 alumi- num alloy were chosen to make corrosion experimentation with slow strain rate method. The result shows 2A14 alumi- num alloy have stress corrosion tendency in 3.5% NaC1 solution. And the corrosion resistance of FSW joint is better than VPTIG joint.
出处 《宇航材料工艺》 CSCD 北大核心 2017年第2期43-46,55,共5页 Aerospace Materials & Technology
关键词 铝合金 应力腐蚀 慢应变速率法 Aluminum alloy, Stress corrosion, Slow strain rate method.
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