頁籤選單縮合
題 名 | 初析肥粒鐵對沃斯回火球墨鑄鐵衝擊韌性的影響=Effects of Ferrite on Impact Toughness of Austempered Ductile Iron |
---|---|
作 者 | 溫東成; | 書刊名 | 中華技術學院學報 |
卷 期 | 24 2002.03[民91.03] |
頁 次 | 頁159-165 |
分類號 | 454.81 |
關鍵詞 | 沃斯回火球墨鑄鐵; 初析肥粒鐵; 衝擊韌性; Austempered ductile iron; Ferrite; Impact toughness; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究改變傳統沃斯回火球墨鑄鐵的熱處理程序,於沃斯田鐵化後先爐冷至700-730℃的沃斯田鐵、肥粒鐵與石墨三相共存區析出肥粒鐵後,在淬冷至低溫鹽浴槽進行沃斯回火恆溫變態,藉由不同沃斯回火時間的控制可以使基底成為5-20%體積分率的初析肥粒鐵與沃斯肥粒鐵的混合組織。實驗結果顯示隨初析肥粒鐵增加,抗拉強度與降伏強度降低,伸長率與衝擊值則有明顯的增加。初析肥粒體含量不超過10%則可以得到等同傳統處理於ADI製程窗間內的強度與更優異的延性與韌性。 |
英文摘要 | New austempered ductile cast iron precipitated ferrite around the spheroidal graphite was produced by a modified heat treatment. The process involved austempering at 350°C for 5-30 min after furnace cooling to 700-730°C from an austenitizing temperature of 900°C for 60 min (α/M-ADI). In this process, a mixture structure of 5-20% ferrite around the graphite with ausferrite was obtained. The results show that the elongation and Charpy impact toughness of α/M-ADI with less 10% of ferrite was increased remarkably. While the tensile strength and 0.2% yield strength of α/M-ADI were at the same value level of the conventional ADI. |
本系統中英文摘要資訊取自各篇刊載內容。