查詢結果分析
來源資料
頁籤選單縮合
題 名 | 含銅1.28%沃斯回火球墨鑄鐵的破裂韌性=The Fracture Toughness of 1.28%Cu Austempered Ductile Iron |
---|---|
作 者 | 溫東成; | 書刊名 | 中華技術學院學報 |
卷 期 | 23 2001.09[民90.09] |
頁 次 | 頁135-144 |
分類號 | 472.2 |
關鍵詞 | 沃斯回火球墨鑄鐵; 機械性質; 破裂韌性; Austempered ductile iron; Mechanical properties; Fracture toughness; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究探討含銅1.28%球墨鑄鐵在260、315、355與400℃四個溫度等級沃斯回火後的機械性質,並比較這四個等級的最佳衝擊韌性與其破裂韌性。 實驗結果顯示機械性質中以衝擊韌性和伸長率最能反映沃斯回火的變態特性,最佳衝擊韌性的沃斯回火時間隨沃斯回火溫度增加而減少,在400℃等級為120分鐘,其他三個等級則為210分鐘。數據顯示破裂韌性和衝擊韌性間有密切關係,其中K□與J□和衝擊韌性的變化趨勢一致,而用以判斷不同強度下材料韌性等級的韌性指標值(K□/σ□)則隨沃斯回火溫度增加而增加。 |
英文摘要 | The mechanical properties of 1.28% Cu-ductile irons austempering of 260, 315, 355 and 400°C were studied. Then, the fracture toughness was compared with the highest value of impact toughness of those specimens. The result show that the elongation and impact roughness had better reflection of the microstructure changes than strength and hardness. The austempering time of specimens with the highest value of impact toughness, 120 min for 400°C and 210 min for others, increased with decreasing in austempering temperature. The data also show that the variations of K□ and J□ were coincided with the change of impact toughness. But the fracture toughness index (K□/σ□) increased with increasing in austempering temperature. |
本系統中英文摘要資訊取自各篇刊載內容。