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題 名 | 鋁合金2219與7003之銲接性研究=Weldability Studies of 2219 and 7003 Aluminum Alloys |
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作 者 | 陳明祥; 陳志毅; 周長彬; | 書刊名 | 技術學刊 |
卷 期 | 14:2 1999.06[民88.06] |
頁 次 | 頁169-180 |
分類號 | 472.14 |
關鍵詞 | 鋁合金; 熱裂; 銲接性; Aluminum; Hot cracking; Weldability; |
語 文 | 中文(Chinese) |
中文摘要 | 鍛造用鋁合金2XXX(Al-Cu合金)系及7XXX(Al-Zn-Mg合金)系主要特點為具有高的 強度,多應用於航空材料上。 然而其銲接性不佳使其應用上受到極大的限制。 本文係選用 2219-T31 與 7003-F 及 7003-T5 三種中高強度鋁合金為實驗之材料, 以惰氣金屬電弧銲 (GMAW) 進行不開槽填料銲接。填料選用 ER2319、 ER4043 及 ER5356 三種銲線。本文主要 探討在異種鋁合金對接下尋找最佳銲接參數及適當填料。並探討經由不同熱處理條件下對銲 件的影響。實驗包括拉伸試驗、微硬度試驗、金相顯微組織觀察、SEM/EDS 分析及破斷面的 表面破裂型態。實驗結果顯示: 經由適當的熱處理條件之銲件,可使其拉伸強度達到甚至於 超越 7003-F 母材的強度。在銲後僅行自然時效處理,則使用填料 ER2319 可得到較佳的銲 後機械性質。若於銲後施行 T4 處理則以 ER4043 較佳。 固溶溫度則以 535 ℃為佳。析出 溫度則以較低的溫度可得到較優的機械性質。 |
英文摘要 | Because the characteristic of high strength, aluminum alloys 2XXX and 7XXX are mainly used in the airplane industry. The major problem for wide use of these materials is its weldability. The aluminum alloys used in this research were 2219-T31, 7003-F, and 7003-T5. Gas metal arc welding process was used with filler metals of ER2319, ER4043, and ER5356. The purpose of this investigation was to determine the optimum welding conditions and filler metal. The best post weld treatment for the dissimilar base metal was also evaluated. Tensile test, optical metallographic examination, and SEM/EDS were conducted. The experimental results showed that the tensile strength reduced by welding can be recovered through proper heat treatment. For the filler metal ER2319, natural aging can give better mechanical properties. T4 heat treatment can be use to achieve good mechanical properties for the weidment with filler metal ER4043. The solution temperature 535 ℃ plus low temperature precipitation is used to obtain maximum tensile strength of dissimilar weld joint of aluminum alloys 2219 and 7003. 為縮短產品開發時程,利用同步工程觀點,將串聯式的設計活動規劃為並行 |
本系統中英文摘要資訊取自各篇刊載內容。