A medium-C martensite steel with 2.6 GPa tensile strength and large ductility

被引：17

作者：

Li, Junkui ^{[1
]}

Yang, Zhinan ^{[1
,2
]}

Hua, Ma ^{[1
]}

Chen, Chen ^{[1
]}

Zhang, Fucheng ^{[1
,2
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Rolled, Qinhuangdao, Peoples R China

来源：

SCRIPTA MATERIALIA | 2023年 / 228卷

关键词：

Martensitic steel; Dislocation; Carbides; Tensile properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEMPERATURE; TRANSFORMATION; TOUGHNESS;

D O I：

10.1016/j.scriptamat.2023.115327

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanoscale lath martensite with high density dislocations and fine V carbides embedded in heterogeneous lamellar structure was produced in Medium-C (0.46%) martensitic steel through multistage rolling process fol-lowed by subsequent oil quenching and low-temperature tempering. Tensile properties show the yield strength, ultimate tensile strength and uniform elongation are up to 1809 MPa, 2590 MPa and 12.6%, respectively. The excellent combination of strength and ductility is comparable and even superior to other high-strength high -ductility metallic materials. In addition, the underlying mechanisms were briefly discussed.

引用

页数：5

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