高强度低合金钢焊缝焊接连续冷却转变图的改进

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-05-24 DOI:10.1080/02670836.2023.2215644

Zi-Yi Lai, X. Lei, Zhenmin Zhang, Yu Zhang, Chaobin Lai

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引用次数: 0

摘要

焊接连续冷却转变(CCT)图反映了焊缝细区组织演变，为实践中组织控制提供了重要数据。本文采用扩展杠杆法则对焊接CCT图进行了改进，使其更精细。详细解释了获取相位信息的过程。改进是:(i)相区域清晰地呈现，(ii)给出相体积百分比，(iii)显示重叠的相区域。为了满足高强度要求，从焊接CCT图中参考21 kJ cm−1的热输入，以获得针状铁素体和板条状马氏体。通过对相变相体积分数的估计，得到了高强度、高韧性的相变相。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Improvements in welding continuous cooling transformation diagram of high-strength low-alloy steel weld

The welding continuous cooling transformation (CCT) diagram concerning microstructure evolution in a fine zone of the weld joint provides essential data for microstructure control in practice. In this study, a welding CCT diagram was improved to be elaborate by using the expanded lever rule. Processes for obtaining pieces of phase information are explained in detail. Improvements are: (i) phase areas are clearly presented, (ii) phase volume percentages are given, and (iii) overlapped phase areas are revealed. To meet high-strength requirement, a heat input of 21 kJ cm−1 was referenced from the welding CCT diagram, for achieving acicular ferrite and lath-like martensite. Transformed phase volume fractions are estimated and high strength and good toughness are obtained due to the elaborate phase information. GRAPHICAL ABSTRACT

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.