查詢結果分析
來源資料
相關文獻
- 擠件形狀對鋁鋰合金形條擠件特性之影響
- 高能量束銲接在鋁合金應用之研究
- Mn-Cu-Ni合金球墨鑄鐵的沃斯回火特性
- 粉末高速鋼之鍛造變數與顯微結構研究
- Comparison of Transmissible Venereal Tumor Cells with Histiocytoma and Lymphoma Cells
- 鋁鋰合金之擠型製程與性質
- 鐵-10鋁-30錳-1.0碳的合金鑄件之切削性
- 高溫型Nd-Fe-B燒結磁石之磁性與顯微結構研究
- 2090鋁鋰合金T8處理超音波特性之研究
- Research of Solution Heat-Treated on AISI 316 Stainless Steel
頁籤選單縮合
題 名 | 擠件形狀對鋁鋰合金形條擠件特性之影響 |
---|---|
作 者 | 吳泓瑜; | 書刊名 | 材料科學 |
卷 期 | 27:2 1995.06[民84.06] |
頁 次 | 頁90-100 |
分類號 | 472.5 |
關鍵詞 | 鋁鋰合金; 型條擠件; 擠型比; 模具承面; 顯微結構; Al-li alloy; Extruded shape; Extrusion ratio; Bearing surface; Microstructure; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要是探討A1-Li-Cu-Zr鋁鋰合金擠製加工技術過程中,擠件形狀 對顯微結構的變化及時效熱處理的影響。擠件之形狀共包括圓棒、長方形、及T 型等三種;其擠型比介別為10:1及26:1。擠件以540℃作固溶處理後,再經190℃之 時效硬化處理。實驗結果顯示,擠件之形狀對其顯微結構有很大的影響。變形量 較大的部份,在熱擠製的過程中會產生動態再結晶。變形量較小的部介,則主要 是產生動態復原。顯微結構的差異會直接影響時效熱處理的狀況。在具有較大變 形量的部分,因其由細小的再結晶晶粒所組成,達到頂時效時所需的時間較短。 變形量較小的區域,則需較長的時效時間來達到頂時效的狀況。由於擠件會因形 狀而影響其不同區域的顯微結構,造成時效熱處理狀態的差異,因此,擠件的機 械性質也會隨著位置的不同而有差別。 |
英文摘要 | The purpose of this study was to research the effect of the extrusion shape on themicrostructure and aging heat treatment of an Al-Li based alloy . Experimental work wasperformed to extrude an Al-Li-Cu-Zr alloy with cross section of circle, rectangle and T. The extrusion ratio ranged from 10:1 to 26:1. The results show that the shape has a strong effect on the microstructure of the extrusion. Dynamic recrystallization will occur in the area with large deformation during hot extrusion. The main effect in the region having smaller deformation is dynamic recovery. Variations in the microstructure would influence the aging heat treatment. For the large deformation, the microstructure is replaced by there crystallized fine-grained structure. The time span to reach peak aging condition is shorterin the fine-grained regions. Longer time period is needed for the locations with smaller deformation. The inhomogeneous deformation causes microstructural variations across the cross section of the extrusions, therefore the mechanical properties and heat treatment depended on the shape of the extrusion. |
本系統中英文摘要資訊取自各篇刊載內容。