一种低成本的策略来改善低碳钢的强度-延展性-韧性平衡

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2023-05-24 DOI:10.1080/03019233.2023.2208988

F. Khorasani, R. Jamaati, H. J. Aval

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引用次数: 0

摘要

摘要目前的研究介绍了一种低成本的策略，通过简单的热处理来改善含0.08wt%碳的低碳钢的强度、延展性和韧性平衡。随着亚临界退火温度的升高，马氏体分数增加。通过将退火温度从770℃提高到830℃，双相钢的硬度从183HV提高到212HV，这是由于马氏体分数从0.28增加到0.49。由于软铁氧体中存在硬马氏体，通过亚临界退火处理生产的所有双相钢样品的强度都高于初始样品的强度。有趣的是，双相钢的延展性与初始样品几乎相同。与初始样品相比，这导致双相钢的韧性显著提高。所有双相钢都显示出完美的韧性断裂。

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A low-cost strategy to improve strength-ductility-toughness balance in a low-carbon steel

ABSTRACT The current research introduces a low-cost strategy to improve strength-ductility-toughness balance in low-carbon steel containing 0.08 wt-% carbon by simple heat treatment. As the intercritical annealing temperature increased, the fraction of martensite enhanced. By increasing the annealing temperature from 770 to 830°C, the hardness of dual-phase steel was increased from 183 HV to 212 HV, which was due to the increment of martensite fraction from 0.28 to 0.49. The strength of all dual-phase steel samples produced by intercritical annealing treatment was higher than that of the initial sample owing to the presence of hard martensite in the soft ferrite. The interesting point was that the ductility of the dual-phase steels was almost the same as the initial sample. This led to a remarkable increase in the toughness of dual-phase steels compared to the initial sample. All dual-phase steels revealed a perfect ductile fracture.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.