EH460钢粗晶热影响区的组织与低温冲击韧性研究

IF 2.5 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING steel research international Pub Date : 2024-10-12 DOI:10.1002/srin.202400276

Pengyan Zhang, Yi Yang, Zhenyi Huang, Qiang Yue, Ke Zhang

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引用次数: 0

摘要

采用Gleeble模拟焊接技术，研究了峰值温度对EH460钢粗晶热影响区组织和低温冲击韧性的影响。chaz的低温冲击韧性随峰值温度的升高而降低。随着峰值温度的升高，chaz的显微组织逐渐由贝氏体转变为由贝氏体、晶内铁素体、侧板条铁素体和少量晶界铁素体组成的混合组织。夹杂物尺寸随峰值温度的升高而减小。大尺寸夹杂物的存在有利于裂纹的萌生和扩展，降低了材料的低温冲击韧性。

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Study on Microstructure and Low-Temperature Impact Toughness in Coarse Grain Heat-Affected Zone of EH460 Steel

Herein, the effects of peak temperature on the microstructure and low-temperature impact toughness of coarse grain heat-affected zone (CGHAZ) of EH460 steel are investigated by Gleeble simulation welding. The low-temperature impact toughness of CGHAZ decreases with the increase of peak temperature. With the increase of peak temperature, the microstructure of CGHAZ gradually changes from bainite to a mixed structure composed of bainite, intragranular ferrite, side lath ferrite, and a small amount of grain boundary ferrite. The inclusions size decreases as the peak temperature increases. The existence of large-sized inclusions is conducive to the initiation and propagation of cracks, reducing the low-temperature impact toughness of the material.

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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

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