【摘要】：采用粉末冶金法制備了Fe-Cr-C-Ni-W合金,研究并分析了熱處理工藝中去穩(wěn)溫度、去穩(wěn)時(shí)間和回火溫度對(duì)合金顯微組織的影響。結(jié)果表明,熱處理態(tài)合金組織為少量馬氏體+碳化物(初生碳化物和二次碳化物)+殘余奧氏體;在900和950℃條件下,隨保溫時(shí)間的延長二次碳化物析出量分別增加和減少,硬度值呈先增大后減小趨勢(shì)。1000℃條件下二次碳化物量最少,硬度值最低。此合金的最佳熱處理工藝為:950℃×1 h+200℃×1 h,硬度為58.4 HRC。
[Abstract]:Fe-Cr-C-Ni-W alloy was prepared by powder metallurgy method. The effects of unsteady temperature, unsteady time and tempering temperature on microstructure of the alloy were studied and analyzed. The results show that the microstructure of the heat-treated alloy is a small amount of martensitic carbides (primary carbides and secondary carbides) residual austenite. At 900 鈩，

本文編號(hào)：2372212