Effect of pulse frequency on hardness characteristics of Al-Cu alloy HPVP-GTAW joints

AA 2219-0 Al-Cu alloy single bead welds were obtained by hybrid ultrahigh frequency pulse variable polarity gas tungsten arc welding （HPVP-GTAW） process with pulse frequency varying from 25 kHz to 70 kHz. Weld hardness characteristics which mainly depicted by microhardness and its gradient were inve...

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Veröffentlicht in:	中国焊接 2015-03, Vol.24 (1), p.62-67
1. Verfasser:	欧阳瑞洁 从保强 杨明轩 齐铂金
Format:	Artikel
Sprache:	eng
Schlagworte:	Al-Cu合金 接头 显微硬度 梯度变化 焊缝硬度 特性 脉冲频率 钨极氩弧焊
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