Evolution Pathway of Competitive Precipitation of Inclusions in Al–Ti‐Deoxidized Steel

IF 1.9 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

steel research international Pub Date : 2024-08-30 DOI:10.1002/srin.202400500

Yuanyou Xiao, Lei Cao, Guocheng Wang, Daxian Zhang, Jianzhong He

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引用次数: 0

Abstract

Seven types of inclusions are observed in the Al‐deoxidized steel followed by Ti‐deoxidized steel, while ten types of inclusions are found in Al–Ti simultaneous deoxidized steel. Three special inclusions are only found in Al‐deoxidized steel followed by Ti‐deoxidized steel as Al2TiO5–TixOy, Al2TiO5–Al2O3–TiS, and Al2TiO5–Al2O3–TixOy–TiS. The precipitation order of inclusions in Al–Ti‐deoxidized steel is very dependent on the value of [%Ti]/[%Al] or [%S]/[%O]. The critical value of [%Ti]/[%Al] for the precipitation of inclusions from large to small is TixOy > Al2TiO5 > Al2O3, and the critical value of [%S]/[%O] for the precipitation of inclusions from large to small is TiS > TixOy. The critical value of [%Ti]/[%Al] for the precipitation of TixOy prior to Al2TiO5, and the precipitation of Al2TiO5 prior to Al2O3 has a close relationship with the content of [%Al]. In addition, the critical value of [%S]/[%O] for the precipitation of TiS prior to TixOy inclusions increases with an increasing content of [%O] and increased with the decreasing of temperature. The precipitation order of inclusions in the two types of steel is Al2TiO5 or Al2O3 → Ti3O5 → TiO2 → Ti2O3 → TiS.

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铝钛脱氧钢中夹杂物竞争性沉淀的演变途径

在铝脱氧钢和钛脱氧钢中发现了七种夹杂物，而在铝钛同时脱氧钢中发现了十种夹杂物。三种特殊夹杂物仅出现在铝脱氧钢中，其次是钛脱氧钢，分别为 Al2TiO5-TixOy、Al2TiO5-Al2O3-TiS 和 Al2TiO5-Al2O3-TixOy-TiS。铝钛氧化钢中夹杂物的析出顺序与[%Ti]/[%Al]或[%S]/[%O]的值有很大关系。夹杂物从大到小析出的[%Ti]/[%Al]临界值为 TixOy > Al2TiO5 > Al2O3，夹杂物从大到小析出的[%S]/[%O]临界值为 TiS > TixOy。在 Al2TiO5 之前析出 TixOy 的[%Ti]/[%Al]临界值和在 Al2O3 之前析出 Al2TiO5 的[%Al]临界值与[%Al]含量有密切关系。此外，TiS先于TixOy夹杂物析出的临界值[%S]/[%O]随[%O]含量的增加而增加，并随温度的降低而增加。两种钢中夹杂物的析出顺序为 Al2TiO5 或 Al2O3 → Ti3O5 → TiO2 → Ti2O3 → TiS。

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来源期刊

steel research international 工程技术-冶金工程

CiteScore

3.30

自引率

18.20%

发文量

319

审稿时长

1.9 months

期刊介绍： steel research international is a journal providing a forum for the publication of high-quality manuscripts in areas ranging from process metallurgy and metal forming to materials engineering as well as process control and testing. The emphasis is on steel and on materials involved in steelmaking and the processing of steel, such as refractories and slags. steel research international welcomes manuscripts describing basic scientific research as well as industrial research. The journal received a further increased, record-high Impact Factor of 1.522 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). The journal was formerly well known as "Archiv für das Eisenhüttenwesen" and "steel research"; with effect from January 1, 2006, the former "Scandinavian Journal of Metallurgy" merged with Steel Research International. Hot Topics: -Steels for Automotive Applications -High-strength Steels -Sustainable steelmaking -Interstitially Alloyed Steels -Electromagnetic Processing of Metals -High Speed Forming