含銅延性鑄鐵經沃斯回火與調質回火之腐蝕及磨耗行為研究

Study on Corrosion and Wear Behavior of Austempered and Quench-Tempered Ductile Irons Containing Copper

林俊穎(Chun-Yin Lin) ； 何慕柔(Mu-Jou Ho) ； 許正勳(Cheng-Hsun Hsu) ； 孫浩筠(Hao-Yun Sun)

《鑄造工程學刊》 45卷1期 (2019/03) Pp. 13-20

摘要

本研究採用含銅之延性鑄鐵（Cu－DI）作為素材，然後利用沃斯回火處理與淬火／回火調質處理改變顯微組織，分別獲得沃斯回火延性鑄鐵（Cu－ADI）與回火麻田散體延性鑄鐵（Cu－TM）。再於3.5wt%NaCl溶液狀態下進行腐蝕及磨耗試驗，以探討不同顯微組織對銅合金化延性鑄鐵腐蝕磨耗行為之影響。實驗結果顯示Cu－ADI組織含有部分的殘留沃斯田體進而提升其耐腐蝕性，因此比較三種不同顯微組織之含銅延性鑄鐵的耐腐蝕耐磨耗順序為Cu－ADI＞Cu－TM＞Cu－DI。

關鍵字

沃斯回火延性鑄鐵 ； 殘留沃斯田體 ； 回火麻田散體 ； 腐蝕 ； 磨耗

並列摘要

This study utilized Cu alloyed ductile cast iron (Cu-DI) as the experimental material, and then the two methods of austempering and quench-tempering were adopted to produce austempered ductile iron (Cu-ADI) and temper-martensite ductile iron (Cu-TM), separately. The wear and corrosion tests were carried out in 3.5wt% NaCl solution for the purpose of comparing the wear/corrosion resistance of Cu-ADI, Cu-TM and Cu-DI. The experimental results showed that Cu-ADI could improve corrosion and corrosive wear resistance due to existing some retained austenite in its microstructure. Thus, comparing the three diffenertly treated of Cu alloyed ductile cast irons, the order of wear/corrosion resistance was Cu-ADI＞Cu-TM＞Cu-DI.

並列關鍵字

Austempered ductile iron ； Retained austenite ； Temper-martensite ； Corrosion ； Wear