慢冷却过程中碳从贫锰板条马氏体向富锰奥氏体的分配

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-02-07 DOI:10.1016/j.jallcom.2025.179038

Dezhen Yang , Zhiping Xiong , Yingchun Wang , Jiusan Xiao , Xingwang Cheng

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引用次数: 0

摘要

高温奥氏体继承了Mn分块珠光体中Mn的非均相分布，导致在冷却至室温时形成富Mn奥氏体和贫Mn马氏体。本研究进一步证明，碳从贫锰马氏体向富锰奥氏体的分配是通过奥氏体化到室温的缓慢冷却（空气冷却）来实现的，这可能与奥氏体中mn的富集有关。结果表明，与水冷时相比，残余奥氏体的比例显著增加，导致均匀伸长率提高60%，同时保持2000 MPa的抗拉强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Carbon partitioning from Mn-depleted lath martensite to Mn-enriched austenite during slow cooling

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Carbon partitioning from Mn-depleted lath martensite to Mn-enriched austenite during slow cooling

The high-temperature austenite inherits the Mn heterogeneous distribution from Mn-partitioned pearlite, leading to the formation of alternative Mn-enriched austenite and Mn-depleted martensite during cooling to room temperature. Here, we further demonstrate that the carbon partitioning from Mn-depleted martensite to Mn-enriched austenite is realized by slow cooling (air cooling) from austenitization to room temperature, which is probably assisted by the Mn-enrichment in austenite. As a result, the fraction of retained austenite is significantly increased compared to that of water cooling, leading to an increase in uniform elongation by 60 % while maintaining 2000 MPa tensile strength.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.