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OALib Journal期刊
ISSN: 2333-9721
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工艺参数对mig焊铝铜合金焊缝组织的影响
Abstract:
？研究了电磁搅拌工艺参数对2219铝铜合金脉冲mig焊焊缝形状和组织的影响.结果表明,随着磁感应强度增加,焊缝枝晶数量减少,等轴晶数量增加,焊缝由指状熔深变为成形良好的椭圆形熔深.当磁感应强度和频率匹配合适时,焊缝成形良好,焊缝组织几乎为细小的等轴晶.但随着磁感应强度继续增加,焊缝成形变差,焊缝等轴晶数量减少,枝晶数量增多.电磁搅拌频率对焊缝成形影响不大,频率较低和较高时都会降低焊缝组织的细化效果.
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