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铝合金/黄铜异种金属电弧熔钎焊

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Indexed by:期刊论文

Date of Publication:2014-04-17

Journal:中国机械工程

Included Journals:PKU、ISTIC、CSCD

Volume:25

Issue:8

Page Number:1122-1125

ISSN No.:1004-132X

Key Words:异种金属连接;铝合金;黄铜;电弧熔钎焊

Abstract:采用Zn-15%Al实芯焊丝开展了铝合金/黄铜TIG熔钎焊搭接试验,并对接头力学性能、显微组织和界面层成分进行了测试分析.测试结果发现,焊态下,接头抗拉强度为164 MPa;热处理后,接头抗拉强度为160MPa.分析结果表明,热处理后焊缝中的枝晶组织长大,部分柱状晶从界面层脱落进入焊缝,恶化了接头性能.界面层中的金属间化合物主要由CuZn5相组成,以柱状晶向焊缝生长.

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