本文選題：改性納米粉體　切入點(diǎn)：球墨鑄鐵　出處：《鑄造》2017年05期 　論文類型：期刊論文

【摘要】：采用改性納米粉體對球墨鑄鐵進(jìn)行強(qiáng)韌化處理,研究了改性納米粉體對球墨鑄鐵顯微組織和力學(xué)性能,尤其是低溫沖擊韌性的影響。結(jié)果表明:經(jīng)過改性納米粉體處理后,球墨鑄鐵的石墨球尺寸減小,石墨數(shù)量增多,基體組織中鐵素體含量增多,晶粒得到細(xì)化;球墨鑄鐵的力學(xué)性能得到提高,低溫沖擊韌性提高44.8%。
[Abstract]:The effect of modified nano-powder on microstructure and mechanical properties of ductile iron, especially the impact toughness at low temperature, was studied. The graphite spheroidal size of ductile iron decreases, the amount of graphite increases, the content of ferrite in the matrix increases, the grain is refined, the mechanical properties of ductile iron are improved, and the impact toughness at low temperature is increased by 44.8%.
【作者單位】： 大連交通大學(xué)材料科學(xué)與工程學(xué)院;
【分類號】：TB383.1;TG255
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本文編號：1633928