Titanium-Dependent Kinetics of Ferrite Single-Phase Recrystallization in Cold-Rolled Ultra-High-Strength Low-Alloy Steels During Annealing

IF 1.9 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Sang Hun Shin, Jong Myeong Kim, Alexander Gramlich, Kwang Su Na
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Abstract

The recrystallization behavior of ferrite single phase in ultrahigh-strength low-alloy (UHSLA) steels, with different titanium concentrations (1000, 1500, and 2000 ppm) is presented. Utilizing detailed dilatometer tests, we identified disparities between the observed austenite onset temperatures and those predicted using the JMatPro 13 program and ThermoCalc. This study accentuates the combined effects of titanium, niobium, and reduced manganese levels on the initiation of the ferrite-to-austenite transformation. The Hall–Petch relationship was used to draw a correlation between titanium concentration, yield strength, and grain size. Moreover, we explored the recrystallization kinetics of these steels using the Johnson–Mehl–Avrami–Kolmogorov (JMAK) model, pinpointing titanium's crucial role in modulating the recrystallization dynamics. These findings have significant implications for advancements in steel manufacturing, enhancing the quality and performance of UHSLA steels in industrial applications.

Abstract Image

冷轧超高强度低合金钢退火过程中铁素体单相再结晶的钛依赖动力学
本文介绍了不同钛浓度(1000、1500 和 2000 ppm)的超高强度低合金(UHSLA)钢中铁素体单相的再结晶行为。通过详细的膨胀仪测试,我们确定了观察到的奥氏体起始温度与使用 JMatPro 13 程序和 ThermoCalc 预测温度之间的差异。这项研究强调了钛、铌和锰含量降低对铁素体向奥氏体转变的综合影响。我们利用霍尔-佩奇关系得出了钛浓度、屈服强度和晶粒大小之间的相关性。此外,我们还利用约翰逊-梅尔-阿夫拉米-科尔莫戈罗夫(JMAK)模型探讨了这些钢材的再结晶动力学,明确了钛在调节再结晶动力学中的关键作用。这些发现对钢铁制造技术的进步、提高 UHSLA 钢在工业应用中的质量和性能具有重要意义。
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来源期刊
steel research international
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
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