Effect of Ti3O5 addition on oxide evolution for HRB400
Effect of Ti3O5 addition on oxide evolution for HRB400
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DOI：
10.1515/mt-2023-0141
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发表时间：
2023-08
影响因子：
2.5
通讯作者：
Hui Li;Xiang Cheng;Yuhui Zhao;H. Kong
中科院分区：
文献类型：
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作者：
Hui Li;Xiang Cheng;Yuhui Zhao;H. Kong
摘要研究了在HRB400钢中直接添加Ti3O5粉末后氧化物的瞬态演变。本实验在真空感应炉的氧化镁坩埚中进行，并在添加Ti3O5后1、5、10和15 min取中间样品。20 min时，停炉，获得空冷铸态试样。对于中间样品，发现随着处理时间的增加，钛含量增加，但酸溶性铝含量保持稳定。用扫描电子显微镜（SEM）观察了含钛氧化物的形貌。此外，统计分析表明，对于含钛氧化物，数密度和钛含量在进一步归一化后随着处理时间的增加而增加。对于铸态试样，不同高度处的含钛氧化物特征相似。这些结果证实了添加Ti3O5的有效性，这可能是由于其分解。最后，热处理后，这些引入的含钛氧化物可以诱导晶内铁素体形核。这表明了外加法在氧化物冶金中的有效性。
Abstract The transient evolution of oxide was studied after directly adding Ti3O5 powder into HRB400 steel. This experiment was carried out in magnesia crucible with vacuum induction furnace and the intermediate samples were taken at 1, 5, 10, and 15 min after Ti3O5 addition. At 20th min, the furnace was powered off to get furnace-cooled cast sample. For intermediate samples, it is found that with increasing treatment time, the titanium content increased though the acid–soluble aluminum content remained stable. Besides, the Ti-bearing oxides were observed by scanning electron microscope (SEM). Moreover, statistical analysis indicated that for Ti-bearing oxide, both number density and titanium content after further normalization increased with increasing processing time. For cast sample, the characteristic of Ti-bearing oxide at different heights are similar. These results confirmed the adding valid of Ti3O5, which may be due to its decomposition. Finally, after heat treatment, these introduced Ti-bearing oxides can induce the intragranular ferrite nucleation. This indicates the effectiveness of external adding method in oxide metallurgy.