模拟铁素体和珠光体初始组织的激光表面硬化

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

Materials Science and Technology Pub Date : 2023-08-07 DOI:10.1080/02670836.2023.2240101

Felipe M. Castro Cerda, Constantinos Goulas, Dakota Jones, Ata Kamyabi, Douglas Hamre, Patricio Méndez, Gentry Wood

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引用次数: 1

摘要

摘要本文研究了激光单道次热处理后的显微组织和硬度的深度依赖性。选取了不同馏分的铁素体和珠光体作为初始组织，对低、中、高碳钢进行了研究。为了更好地反映快速热循环过程中微观结构的演变，对已有模型进行了修正。结果表明，新范式下的预测结果与实验数据吻合较好。新模型表明，正确估计过渡区附近奥氏体成分可以更准确地预测硬度分布，减少了以往工作中过高估计的问题。关键词:激光热处理;快速加热;奥氏体;

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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Modelling the laser surface hardening in a ferrite and pearlite initial microstructure

ABSTRACTThe present study explores the microstructure and the depth-dependence of hardness after a single pass laser heat-treatment. The initial microstructure was selected as ferrite and pearlite in different fractions, with the aim of studying low, medium, and high carbon steels. A modification of an existing model is proposed, whereby the cementite dissolution is incorporated to better reflect the microstructure evolution during the rapid thermal cycle. It is found that the predictions under the new paradigm show fair agreement with the experimental data. The new model indicates that the correct estimation of the composition of austenite near the transition zone produces a more accurate prediction of the hardness profile, reducing the overestimation obtained in previous works.KEYWORDS: Laser heat treatmentFast heatingAusteniteMartensiteModelling Disclosure statementNo potential conflict of interest was reported by the author(s).

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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.