一种低碳Nb-V-Ti微合金钢静态再结晶行为的实验研究

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI:10.1051/METAL/2021003

Fei Li, Liwen Zhang, Chi Zhang, Qing Yang, Chaoqun Li, P. Mao

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引用次数: 1

摘要

采用两道热压缩试验研究了低碳Nb-V-Ti微合金钢X70的静态再结晶行为。压缩试验的变形温度为1000 ~ 1150℃，应变速率为0.01 ~ 5 s−1，预应变为0.1 ~ 0.2，间隔时间为1 ~ 50 s。分析了变形参数对SRX性能的影响。实验结果表明，变形温度、预应变和应变速率对SRX分数有显著影响，初始晶粒尺寸影响较小。讨论了变形参数对SRX微观组织的影响，分析了其微观组织演变过程。变形温度、应变速率和预应变越高，SRX分数越大。建立了X70管线钢SRX的动力学模型和再结晶晶粒尺寸模型。预测结果与实验结果的对比表明，所建立的方程能较好地描述X70管线钢的SRX行为。

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Experimental investigation on static recrystallization behavior of a low carbon Nb–V–Ti microalloyed steel

The static recrystallization (SRX) behavior of a low carbon Nb–V–Ti microalloyed steel X70 was investigated by two-pass hot compression tests. The compression tests were carried out at deformation temperatures of 1000–1150 °C, strain rates of 0.01–5 s−1 , pre-strains of 0.1–0.2 and interval times of 1–50 s. The effects of deformation parameters on SRX behavior were analyzed. The experimental results showed that deformation temperature, pre-strain and strain rate had significant influence on SRX fraction, while initial grain size had a smaller impact. The effects of deformation parameters on SRX microstructure were discussed, and the microstructure evolution process was analyzed. Higher deformation temperature, strain rate and pre-strain lead to larger SRX fraction. The kinetics and recrystallized grain size models for SRX of X70 pipeline steel were developed. Comparison between the predicted results and the experimental ones indicated that the established equations could give a reasonable description for SRX behavior of X70 pipeline steel.

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.