Zr对高钛低合金钢模拟热影响区韧性的影响

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

Ironmaking & Steelmaking Pub Date : 2023-05-18 DOI:10.1080/03019233.2023.2210910

Hao Yao, Chengjun Liu, Lifeng Zhang

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引用次数: 1

摘要

摘要研究了Zr对模拟热影响区内高钛低合金钢−20°C冲击能量、组织和夹杂物的影响。未添加Zr的钢的冲击能为25.7J，而添加80ppm Zr的钢材的冲击能增加到242.9J。当热输入为300kJ时 cm−1时，未添加Zr的钢的冲击能为17.5 J，添加80 ppm Zr的钢材的冲击能增加到140.9 J，AF的成核潜力从24.4/mm2增加到76.7 /mm−2，夹杂物的平均成核势从2.02下降到1.67。针状铁氧体形成的晶粒细化源于1-3的增加 μm的Al-Ti-Zr-O夹杂物是提高含锆钢CGHAZ韧性的主要原因。

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Effect of Zr addition on toughness in the simulated heat-affected zone of high-titanium low-alloy steels

ABSTRACT The effect of Zr addition on the impact energy at −20°C, the microstructure, and inclusions of high-titanium low-alloy steels in the simulated heat-affected zone was investigated. The impact energy of the steel without Zr addition was 25.7 J and increased to 242.9 J for the steel with the addition of 80 ppm Zr. When the heat input was 300 kJ cm−1, the impact energy of the steel without Zr addition was 17.5 J and increased to 140.9 J for the steel with 80 ppm Zr, the nucleation potential of AFs increased from 24.4 /mm2 to 76.7 /mm−2, and the average nucleation potential of inclusions decreased from 2.02 to 1.67. The grain refinement by the formation of acicular ferrites stemmed from the increase of 1–3 μm Al-Ti-Zr-O inclusions was responsible for the toughness improvement in CGHAZ of the Zr-bearing steel.

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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.