Study Of The Hot Deformation Parameters On The Superplastic Behavior In Coarse-grained A6061 Aluminum Alloys
簡瑜廷、李義剛
E-mail: [email protected]
ABSTRACT
By superplastic forming, the workpiece with complicated shape can be produced by one batch processing thus the processing costs resulted from traditional processes such as cutting processing, thermal treatment, plastic processing and bonding can be eliminated while achieving products of high precision. So far there have been cases of successfully produced components and parts based on this technology for the applications of aerospace and automobile industries among foreign countries, such that it has become one of the most important precision processing technologies. The majority of superplastic materials for aluminum are in the categories of fine grained (
Keywords : Aluminumalloys、Coares-grained、Dynamic recrystallization、Superplastic forming、High temperature deformation Table of Contents
目錄 封面內頁 簽名頁 中文摘要... iii 英文摘要... iv 誌謝... vi 目錄... vii 圖目錄... ix 表目錄... xii 第一章 前言.... 1 第二章 文獻回顧.2 2-1 鋁合金簡介..2 2-1-2鋁合金之分類... 4 2-1-3 A6061介紹... 5 2-2 超塑性成形簡介... 8 2-2-1晶 粒尺寸對超塑性影響... 11 2-2- 2 超塑性成形優缺點... 15 2-3超塑性力學分析... 16 2-4 鋁合金動態回復與再結晶介紹. 19 2-4-1 動態回復... 19 2-4-2 動態再結晶.... 21 第三章 實驗步驟..22 3-1 實驗流程...22 3-2 實驗材料...24 3-3 DSC熱分析....25 3-4 高溫拉伸試驗...25 3-5 高溫脹形系統...27 第四章 結果與討論...32 4-2 壓縮與拉伸應力分析..33 4-2-1 真實應力-真 實應變分析...33 4-2-2 m值與延伸率探討...35 4-3 拉伸與壓縮試驗顯微組織觀察...40 4-4 大晶粒A6061高溫脹形可行性 分析...46 4-5 大晶粒A6061模具脹形試驗...54 4-6 TEM分析...59 第五章 結論...63 參考文獻...64 REFERENCES
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