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马氏体/贝氏体多级微结构三维表征研究进展
Recent Advances in the Three-dimensional Characterization ofMartensite/Bainite Hierarchical Microstructures
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- DOI:
- 作者:
- 方 宇 1，刘飞龙 1，申熙美 1，王 磊 2，宋韶杰 1，刘 峰 1
FANG Yu1, LIU Feilong1, SHEN Ximei1, WANG Lei2, SONG Shaojie1, LIU Feng1
- 作者单位:
- 1. 西北工业大学 凝固技术全国重点实验室，陕西 西安 710072；2. 中国石油集团工程材料研究院有限公司 油气钻采输送装备全国重点实验室，陕西 西安 710077
1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China; 2. StateKey Laboratory of Oil and Gas Equipment, CNPC Tubular Goods Research Institute, Xi'an 710077, China
- 关键词:
- 三维表征；马氏体；贝氏体；多级微结构；多级微结构边界
three-dimensional characterization; martensite; bainite; hierarchical microstructure; hierarchical microstructureboundary
- 摘要:
- 板条马氏体/贝氏体被视为高强钢中实现强韧性协同调控的关键组织形态，其复杂的多级微结构在性能优化过程中扮演着十分重要的角色。 近年来，三维表征技术的快速发展，为深入理解其内部组织演化提供了前所未有的机遇。 本文首先回顾了马氏体/贝氏体研究的历史与背景，并阐明三维表征技术在揭示其晶体学取向特征和多级微结构中的重要意义；系统总结了主流三维表征技术的原理，并比较了其在空间分辨率、数据获取效率以及适用尺度等方面的优势与局限性。 在此基础上，围绕 4 个方面重点综述了马氏体/贝氏体板条的三维表征：①多级微结构在三维空间中的几何形貌；②多级微结构边界网络在三维空间中的分布特征；③贝氏体板条的形核与生长碰撞行为；④马氏体多级微结构对钢抗裂性能的影响。 最后，结合当前研究中的不足与挑战，对未来的研究方向进行了展望与思考。
Lath martensite/bainite are key microstructural features that enable the synergistic optimization of strength andtoughness in high-strength steels. Their complex hierarchical microstructures play a crucial role in tailoring the mechanicalperformance. In recent years, the rapid development of three-dimensional (3D) characterization techniques has providedunprecedented opportunities for an in-depth understanding of their internal structural evolution. This review first traces thehistory of martensite/bainite research and highlights the importance of 3D characterization in revealing their crystallographicorientation features and hierarchical microstructures. Systematically summarizes the principles of mainstream 3Dcharacterization techniques and compares their advantages and limitations in terms of spatial resolution, data acquisitionefficiency, and applicable length scales. Accordingly, this review focuses on four key aspects of three-dimensionalcharacterization of martensite/bainite laths: (1) the geometric morphology of hierarchical microstructures in three dimensions;(2) the distribution characteristics of hierarchical microstructure boundary networks in three-dimensional space; (3) thenucleation, growth, and impingement behavior of bainitic laths; (4) the influence of hierarchical martensitic structures onfracture resistance. Finally, after discussing the current limitations and challenges, the review outlines promising futureresearch directions.