Simultaneously enhancing strength and toughness of medium-carbon martensitic steel via nano precipitates and fine-grained structure

被引：16
|
作者：
Liu, Hanghang [1 ,2 ]
Fu, Paixian [1 ,2 ]
Liu, Hongwei [1 ,2 ]
Sun, Chen [1 ,2 ]
Du, Ningyu [1 ,2 ,3 ]
Li, Dianzhong [1 ,2 ]
机构：
[1] Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
[3] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2022年 / 842卷
基金：
中国博士后科学基金;
关键词：
Martensitic steels; Precipitation; Grain refining; Mechanical properties; Synergistic strengthening; MECHANICAL-PROPERTIES; MICROSTRUCTURE EVOLUTION; MOLD STEEL; CRYSTALLOGRAPHY;
D O I：
10.1016/j.msea.2022.143030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A medium-carbon martensitic mold steel with high strength and toughness is obtained based on the synergistic effect of nano precipitates and fine-grained (FG) structure. Treatment increases the length per unit area of the effective grain boundary by 37.9%. Compared with the untreated samples, the excellent properties of the steel include increases of 39.2% in impact energy and more than 110 Mpa in ultimate yield strength. The FG structure is produced by the interaction between the MC nano precipitates formed by V alloying and the subgrain structure formed by thermomechanical processing (TMP). Additionally, the anisotropy of the microstructure is eliminated through the innovative introduction of austenitization, resulting in the refinement and homogenization of the grain structure. MC nano precipitates not only prevent the growth of subgrain structure but also enhance the thermal stability of FG structure through a pinning mechanism during austenitization.
引用
收藏
页数：8
相关论文
共 48 条
  • [41] Investigation of characteristic and evolution of fine-grained bainitic microstructure in the coarse-grained heat-affected zone of super-high strength steel for offshore structure
    Gan, Xiaolong
    Wan, Xiangliang
    Zhang, Yongjie
    Wang, Honghong
    Li, Guangqiang
    Xu, Guang
    Wu, Kaiming
    MATERIALS CHARACTERIZATION, 2019, 157
  • [42] Development of Fine-Grained, Low-Carbon Bainitic Steels with High Strength and Toughness Produced Through the Conventional Hot-Rolling and Air-Cooling
    Dhua, Sanjay Kumar
    Sarkar, Partha Pratim
    Saxena, Atul
    Jha, Bimal Kumar
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (12): : 6224 - 6236
  • [43] Development of Fine-Grained, Low-Carbon Bainitic Steels with High Strength and Toughness Produced Through the Conventional Hot-Rolling and Air-Cooling
    Sanjay Kumar Dhua
    Partha Pratim Sarkar
    Atul Saxena
    Bimal Kumar Jha
    Metallurgical and Materials Transactions A, 2016, 47 : 6224 - 6236
  • [44] Nanoprecipitate-Hardened 2.8 GPa Medium-Carbon Low-Alloy Martensitic Steel with Exceptional Ductility Produced via Rapid Heavy Warm Rolling
    Ji, Xinbo
    Zhang, Huakai
    Jian, Mingjian
    Zhang, Guangcheng
    Zhang, Duqing
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024, 33 (21) : 11458 - 11466
  • [45] Synergistic enhancement of strength, ductility, and toughness in a low carbon micro-alloy steel with an ultrafine-grained heterogeneous lamellar structure
    Xu, X. N.
    Li, X. L.
    Gou, X. Q.
    Li, Y.
    Ye, Q. B.
    Tian, Y.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2023, 878
  • [46] Enhancing strength-ductility synergy via hierarchical microstructure in fine-grained Ti-10Mo-8V-1Fe-3.5Al alloy
    Zhang, Bingjie
    Huang, Mingda
    Sun, Qiaoyan
    MATERIALS LETTERS, 2022, 325
  • [47] Achieving fine-grained structure with larger ferrite fraction via local dry underwater WAAM to enhance corrosion behavior of 308 L stainless steel
    Liao, Haipeng
    Kuang, Yingwei
    Zhou, Danhuan
    Zhang, Qin
    Wu, Xiangmiao
    Xu, Lianyong
    Wang, Xiaoming
    Wang, Zhenmin
    CONSTRUCTION AND BUILDING MATERIALS, 2024, 457
  • [48] INFLUENCE OF THE STRUCTURE ON THE TOUGHNESS PROPERTIES OF THE HEAT-AFFECTED ZONE OF WELDS OF THE HIGH-STRENGTH FINE-GRAINED STRUCTURAL-STEELS STE36 AND STE47
    SCHMIDTMANN, E
    STAHL UND EISEN, 1979, 99 (03): : 106 - 112
12345