研究生: |
林章棋 |
---|---|
論文名稱: |
鐵-碳系合金摩擦攪拌接合微觀組織演變及接合性質研究 |
指導教授: | 程金保 |
學位類別: |
碩士 Master |
系所名稱: |
工業教育學系 Department of Industrial Education |
論文出版年: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 88 |
中文關鍵詞: | 摩擦攪拌銲接 、球墨鑄鐵 、SAE1008碳鋼 、鐵-碳系合金 |
論文種類: | 學術論文 |
相關次數: | 點閱:176 下載:1 |
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摩擦攪拌銲接是一種低變形、高品質、低成本的固態接合方法,銲接過程中並未使材料產生熔融,能有效提昇銲件的接合品質。鐵-碳合金是人類最廣泛使用的金屬材料之一,由於具有價格低廉、高強度之特性,是一種理想的工程結構材料。球狀石墨鑄鐵具有優良鑄造性、適當之機械性質且價格低廉,所以在許多工程結構件上已被廣泛使用。本研究擬採用SAE1008碳鋼及肥粒鐵基球墨鑄鐵為接合試片,分別以同種材及異種材接合的方式,利用摩擦攪拌銲接方法進行對接,探討在各種不同製程參數下的接合品質,以及銲接區域之顯微組織演變與機械性質之變化。
研究結果發現SAE1008碳鋼在適當的實驗參數下,銲道區域內晶粒組織有細化之動態再結晶現象,微硬度值也有顯著的提升,拉伸試驗結果顯示,試片與母材之抗拉強度值相比略有提升。肥粒鐵基球墨鑄鐵經過FSW接合後,攪拌區產生了硬脆的麻田散鐵組織,銲道有硬度增加及延性降低的情形。SAE1008碳鋼與肥粒鐵基球墨鑄鐵異質合金在攪拌桿順、逆時針兩個方向迴轉接合後,以逆時針方向迴轉所得之接合品質較佳。
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