Effect of Non-metallic Inclusions in Fe-Al-Ti-O-N-S Alloy on Grain Size

被引：0
作者：
Wonjin Choi
Hiroyuki Matsuura
Fumitaka Tsukihashi
机构：
[1] The University of Tokyo,Department of Advanced Materials Science, Graduate School of Frontier Sciences
[2] Yonsei University,School of Advanced Material Engineering
来源：
Metallurgical and Materials Transactions B | 2016年 / 47卷
关键词：
Al2O3; Austenite; Heated Sample; Size Number; Ferritic Stainless Steel;
D O I：
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中图分类号：
学科分类号：
摘要：
The effect of characteristics of non-metallic inclusions in Fe-Al-Ti-O-N-S alloys with various compositions at 1473 K (1200 °C) on the microstructure was studied. The ASTM grain size number was determined in as-cast and heated samples by the optical microscopy, and the inclusion types in each sample were determined from composition analysis by field-emission scanning electron microscope with energy-dispersive spectroscopy. The TiN-based inclusions certainly had a positive effect on the grain refinement. On the other hand, TiS-based inclusions exhibited no influence on the decrease of grain size. In addition, the formation and evolution behavior of inclusions by heating solid-state Fe-Al-Ti-O-N-S alloys with those locations were clarified. A different change of inclusions in alloys was observed depending on the distribution and composition of inclusions.
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页码：1851 / 1857
页数：6
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