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題名 | 銅-鋯-鋁三元系統於500℃下的相平衡=Phase Equilibria of the Cu-Zr-Al Ternary System at 500℃ |
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作者姓名(中文) | 張顧中; 陳冠達; 顏怡文; | 書刊名 | 鑛冶 |
卷期 | 58:2=226 2014.06[民103.06] |
頁次 | 頁86-96 |
分類號 | 440.39 |
關鍵詞 | 塊材金屬玻璃; Cu-Zr-Al三元合金; 相平衡; 等溫截面相圖; Buck metallic glass; BMG; Cu-Zr-Al ternary system; Phase equilibria; Isothermal section; |
語文 | 中文(Chinese) |
中文摘要 | 金屬玻璃是在特定金屬組成成份,以極快速的冷卻速度下製備非晶狀態的合金使其具有優異的機械性質。其中塊材金屬玻璃(BMG)因製程簡便、成本較低,使得BMG的研究逐漸被重視。在非晶合金系統中因Cu基合金成本較低,具有不錯的玻璃形成能力與過冷液相區。Zr基非晶質合金具有良好的玻璃形成能力和較大的過冷區。因此Cu-Zr-Al三元合金系統是目前熱門的金屬玻璃系統之一。金屬玻璃製的製備與材料間系統相平衡關係十分緊密,相圖資訊對金屬玻璃材料系統提供重要資訊。然而非晶合金為一非平衡狀態下所製備出的固化合金。本研究探討Cu-Zr-Al三元合金在500℃下之相平衡,是為了與Cu- Zr-Al三元合金非晶狀態下作一比較,用已明瞭平衡相圖與非晶狀態下的差異,以提供製備Cu-Zr-Al三元金屬玻璃之重要參考依據。利用電弧熔融法製作36組不同組成 之Cu-Zr-Al三元合金,將合金放置在高溫爐中500℃下時效1440小時後,經由X-ray繞射儀鑑定合金平衡相之結構,以掃描式電子顯微鏡觀察表面微結構,並以能量分散光譜儀分析平衡相之組成。所分析出的相種類與組成比例再與Cu-Al、Cu-Zr、Zr-Al等二元相圖比對,以確認Cu-Zr-Al三元系統於500℃下的等溫截面相圖。實驗結果顯示,Cu-Zr-Al三元合金在500℃下的相平衡存在16個單相區、29個兩相區、14個三相區,並無發現三元介金屬相。 |
英文摘要 | Bulk metallic glasses (BMG) have specific properties, such as the excellent mechanical properties. The Zr-based and the Cu-based alloys have promising ability to form amorphous metallic glasses due to their large range of the super-cooling and the requirement of simple manufacturing equipments. For the benefit of the low cost, the Cu-based alloys have a better advantage than the Zr-based alloys and hence are more valuable for the manufacturer. The majority of the Cu and Zr elements added Al element to develop a novel Cu-Zr- Al ternary alloy systems. Phase equilibria are the most fundamental research in material science. The purpose of this study is to investigate the phase equilibra of Cu- Zr-Al ternary system at 500°C. Due to formation of BMG under supercooling solidification process, the phase equilibria result will help industry to obtain clear understanding to develop Cu-Zr-Al BMGs. Several Cu- Zr-Al alloys were prepared and aged at 500°C for 1440 h. The alloys were pulverized and analyzed with an X-ray diffractometer (XRD) to determine their phase structure. A scanning electron microscope (SEM) was used for microstructure examination, while SEM with energy dispersive spectrometer (EDS) was applied for compositional analysis. Microstructures, compositional data, and diffraction patterns were examined together to identify the phases present in each equilibrated alloy. The results indicate that there are 16 single-phase, 29 two-phase, and 14 three-phase regions in the Cu-Zr-Al isothermal section at 500°C. No ternary Cu-Zr-Al IMC was found in the Cu-Zr-Al ternary system. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。