作者單位：1、沈陽大學(xué)機(jī)械工程學(xué)院2、東北大學(xué)材料與冶金學(xué)院

　　中文關(guān)鍵字：高爐襯板;高鉻鑄鐵;微觀組織;性能

　　英文關(guān)鍵字：Furnace liner; High chromium cast iron; Microstructure; Property

　　中文摘要：采用正交試驗法研究了Mo、Ni、Cu對高爐襯板用Cr26高鉻鑄鐵鑄態(tài)組織和性能的影響，以宏觀硬度和沖擊韌度為考察指標(biāo)，對3種合金元素含量進(jìn)行了優(yōu)化設(shè)計。研究結(jié)果表明，單一合金元素對該高鉻鑄鐵硬度和沖擊韌度影響以Ni最為顯著;而任意兩種合金元素的聯(lián)合作用效果以Mo加Cu最為顯著。當(dāng)合金元素含量為0.6%Mo、0.7%Ni和1.0%Cu時，獲得的高鉻鑄鐵綜合性能最佳，鑄態(tài)硬度為55.5 HRC，沖擊韌度αk為7.4J·cm-2，鑄態(tài)顯微組織由六角形M7C3初生碳化物，M7C3共晶碳化物和奧氏體組成。

　　英文摘要：

　　The orthogonal experimental method was employed in this work to research the law of effect of Mo, Ni and Cu on the as cast microstructure and mechanical properties of Cr26 high chromium cast iron that used on the furnace liner. based on the data of the impact toughness and macrohardness, the optimization about the composition was carried on. The results show that the most significant effect of any one alloy element on the mechanical properties owns to Ni, and the best combination is Mo and Cu. The best ascast mechanical properties, which are HRC 55.5 and 7.4 J·cm-2 can be obtained when the composition is 0.6 wt.%Mo、0.7 wt.%Ni and 1.0 wt.%Cu, and the corresponding microstructure contains hexagonal M7C3 primary carbides, eutectic M7C3 carbides and austenite.