臺灣博碩士論文加值系統

非晶質合金擁有優良的機械性質，但因其缺乏在常溫下的塑性變形能力及延展性，為求改善，因此發展出許多改善性質的方法。例如熱處理、添加微量元素、滾軋等。
Zr53Cu30Ni9Al8，此非晶質合金基材擁有不錯的玻璃形成能力(Glass Forming Ability)，其γm值約0.739且其具有寬的過冷液相區約為80K。本實驗為探求非晶質合金在常溫下的加工能力，選擇以銅薄片置於Zr53Cu30Ni9Al8非晶質合金上下並在常溫下進行接合，以分散應力分佈，達成均勻變形之目的，使非晶質合金與銅片形成另一種複合材料，使其在工業應用上更具發展。在非晶質合金外加上薄的金屬可以減緩剪切帶的傳播並阻礙其達到臨界不穩定狀態。這有利於非晶質合金的加工，並有別於溫軋可能造成結構內部結晶生成，能保留非晶質合金的特質。
本實驗亦透過非晶質合金與銅薄片之常溫滾軋接合，探討接合材之表面處理、滾軋接合之軋延方向、滾軋接合之軋延率以及非晶質合金厚度對接合效果之影響。

Amorphous alloys have excellent mechanical properties, but it lack of ability of plastic deformation and dutility at room temperature. In order to improve these disadvantage, there are many methods that can improve the properties have been developed. For example, thermal treatments, adding of elements, rolling and so on.
Zr53Cu30Ni9Al8, this bulk metallic glasses has good glass forming ability, its γm is about 0.739 and wide supercooled liquid region, its ΔTx is about 80K. In this study, for research the working ability of bulk metallic glasses at room temperature, the Cu sheets have been chosen to place at the upside and downside of Zr53Cu30Ni9Al8 bulk metallic glasses to carry out the roll bonding to disperse stress distribution and achieve the goal of average deformation, make bulk metallic glasses and Cu sheet become a composite material. The thin metal coating slows down shear band dynamics and retards its attainment to a critical unstable state. It not only is beneficial to working of bulk metallic glasses but also can keep the thermal properties of bulk metallic glasses, that is different from warm rolling.
This study also through Zr53Cu30Ni9Al8 bulk metallic glasses roll bonding with Cu sheet to investigate how the process of roll bonding influence the effet of roll bonding, like surface treatments, the rolling direct of roll bonding, the reduction rate of roll bonding and the thickness of bulk metallic glasses.

摘要 I
英文摘要 III
誌謝 VI
總目錄 V
圖目錄 VIII
表目錄 XIII
第一章 研究背景 1
1-1 前言 1
1-2 研究目的 2
第二章 理論基礎 3
2-1 非晶質合金概述 3
2-2 非晶質合金之製造 3
2-2-1 非晶質合金合成準則 3
2-2-2 非晶質合金製備方式 5
2-3 非晶質合金特性 8
2-3-1 熱力學性質 8
2-3-1-1 介穩定態的非晶質合金 8
2-3-1-2 玻璃轉換溫度(Tg) 9
2-3-1-3 玻璃形成能力(GFA) 11
2-3-2 機械性質 13
2-3-3 耐腐蝕性質 14
2-3-4 磁性質 15
2-4 非晶質合金之應用與限制 15
2-5 滾軋原理 15
2-5-1 滾軋設備簡介 16
2-5-2 滾軋對非晶質合金之影響 17
2-6 滾軋接合 18
2-6-1 滾軋接合之方式 18
2-6-2 非晶質合金之滾軋接合 19
第三章 實驗步驟與方法 21
3-1 非晶質合金之製備 21
3-1-1 電弧熔煉法(Arc melting) 21
3-1-2 真空吸鑄法(Vacuum suction casting) 21
3-2 X光繞射儀(XRD) 22
3-3 視差掃描熱量計測試(DSC) 22
3-4 非晶質合金與銅片之滾軋接合實驗 22
3-4-1 非晶質滾軋試片之預處理 22
3-4-2 銅片之預處理 23
3-4-3 水滴角實驗 24
3-4-4 滾軋接合實驗 24
3-5 顯微結構觀察 24
3-6 機械性質量測 24
第四章 結果與討論 26
4-1 塊狀金屬玻璃之基礎性質分析 26
4-2 滾軋接合試片之預處理 26
4-2-1 塊狀金屬玻璃之表面預處理探討 26
4-2-2 銅片之表面處理探討 27
4-2-2-1 刷清法 27
4-2-2-2 腐蝕法 28
4-3 滾軋接合實驗之結構觀察 28
4-3-1 表面刷清銅片與表面刷清塊狀金屬玻璃之接合 29
4-3-2 表面腐蝕銅片與表面刷清塊狀金屬玻璃之接合 29
4-3-3 塊狀金屬玻璃厚度對接合效果之影響 30
4-3-4 壓延率對接合效果之影響 31
4-3-5 壓延方向對接合效果之影響 32
4-4 滾軋接合試驗之參數總結 32
4-6 機械性質量測結果 32
第五章 結論 34
第六章 參考文獻 35

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