Effect of Al on Inclusions in 430 Stainless Steel Containing Titanium
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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.
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Key words:
- 430 stainless steel /
- Ti/Al inclusion /
- disregistry /
- ratio of [Ti]/[Al]
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