Al对含钛430不锈钢夹杂物的影响

来源期刊：钢铁钒钛2011年第1期

论文作者：施晓芳 成国光 赵沛

文章页码：57 - 61

关键词：430不锈钢； Ti/Al夹杂物； 错配度； [Ti]/[Al]

Key words：430 stainless steel； Ti/Al inclusion； disregistry； ratio of [Ti]/[Al]

摘    要：在实验室条件下考查了Al含量对含钛430不锈钢的Ti/Al夹杂物的影响,发现随着Al含量增加,夹杂物尺寸增加,并且从含Al高的钢样中观察到了Ti₂O₃与Al₂O₃固溶体;通过计算Ti₂O₃与Al₂O₃之间的错配度,证明了Ti₂O₃很容易依附于Al₂O₃形核,为了防止大颗粒夹杂物的生成,从热力学角度分析了Al对含钛氧化物形成的影响,通过计算Al-Ti-O平衡关系,提出了最佳[Ti]/[Al]。

Abstract: Experiments were carried out in laboratory to investigate the effect of Al content on the Ti/Al inclusion in 430 stainless steel containing titanium.It was found that the size of the inclusions increased with the Al content increasing.And some solid solution of Ti₂O₃ and Al₂O₃ were observed in high Al content’s sample.The disregistry between Ti₂O₃ and Al₂O₃ was calculated.It was proved that Ti₂O₃ easily attached to Al₂O₃ to form nuclei.In order to prevent forming larger inclusion,a thermodynamic study was undertaken to analyze the effect of Al on forming titanium oxides.The equilibrated relations between Al-Ti-O was calculated and the optimal ratio of [Ti]/[Al] was put forward.