纯铝与铝合金熔接特性探讨.PDFVIP

1100純鋁與3003鋁合金熔接特性探討 Study on welding properties of 1100 pure Al and 3003 Al alloy 李昇樺* 、洪飛義 、呂傳盛、陳祥慶 國立成功大學材料科學及工程學系 Sheng-Hua Lee*, Fei-Yi Hung, Truan-Sheng Lui, Hsiang-Ching Chen Department of Materials Science and Engineering, National Cheng Kung University. *Email: mail.ncku.edu.tw Tel : 886-6-2757575 ext 62964 摘要 本研究探討1100純鋁與3003鋁合金 ，經逆T字流動性試驗評估硬銲製程之熔 接特性 。成功硬銲之臨界條件為610°C加熱45分鐘 ，銲接點矽擴散至3003鋁合金 之晶界部位 ，材料少部分位置剝離 。610°C加熱60分鐘 ，雖成功銲接但矽已擴散 至1100純鋁內部 ，且3003結構鋁合金之半邊材料全部剝離 。硬銲溫度630°C加熱 30分鐘，銲接觸面積極狹小。630°C加熱45分鐘，銲接點具有多處位置嚴重剝離。 硬銲溫度630°C加熱60分鐘 ，矽已擴散至1100純鋁。3003鋁合金之半邊材料全部 剝離 ，與硬銲溫度610°C加熱60分鐘結果相似 。透過本系統探討可確認矽擴散深 度為主要影響熔接點組織之要因 ，且與接點機械特性關係密切 。 關鍵詞 ：1100純鋁、硬銲製程 、熔接特性 Abstract In this study, the reverse T-shaped flowing property test is to assess the brazing property by using 1100 pure Al and 3003 Al alloy. There is the critical brazing parameter at 610°C after 45 minutes. The silicon which diffused in grain boundary of 3003 Al alloy results in few regions stripped. After 60 minutes heated at 610°C, it can be brazed successfully but silicon diffused to 1100 pure Al and half part of the 3003 alloy is stripped. At 630°C for 30 minutes, the brazing area is small. The point of welding has seriously stripped in many zones when heated at 630°C for 45 min. It is brazing at 630°C for 60 minutes, the result is the same as at 610°C after 45 minutes heating that more than half part of specimen of 3003 Al alloy is stripped. According to this test, whether it can be successful depends on silicon diffusion that this result has great effect upon mechanical property. Key word: 1100 pure Al, 3003 Al alloy, Braz