Effect of nano-precipitates and TRIP effect on strain hardening behavior of low-carbon nanostructured steel

被引：0

作者：

Yang, Xiaocong ^{[1
]}

Li, Chengning ^{[1
,2
]}

Ba, Lingzhi ^{[1
]}

Wang, Ce ^{[1
]}

Ju, Yuezhang ^{[1
]}

Wang, Ying ^{[1
,2
]}

Di, Xinjie ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[2] Tianjin Key Lab Adv Joining Technol, Tianjin 300350, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2025年 / 472卷

基金：

中国国家自然科学基金;

关键词：

Low-carbon nanostructured steel; Work hardening; TRIP effect; Nano-precipitation; Strength-ductility; HIGH-STRENGTH STEEL; MECHANICAL-PROPERTIES; NANOSCALE PRECIPITATION; NIAL-TYPE; CU; AUSTENITE; MICROSTRUCTURE; TRANSFORMATION; MARTENSITE; DUCTILITY;

D O I：

10.1016/j.conbuildmat.2025.140816

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A novel microstructure design idea involving co-precipitation strengthening of Cu-rich and NiAl nanoparticles and the transformation-induced plasticity (TRIP) effect has been proposed to greatly improve the strengthductility combination of low-carbon nanostructured steel. The volume fraction of reversed austenite in QPT650 steel reached 16.4 % after quenching-partitioning-tempering treatment, and the ultra-high yield strength of similar to 1237 MPa and excellent uniform elongation of similar to 10.7 % were obtained. The co-precipitated coreshell structure of Cu-rich and NiAl decomposes into separate Cu-rich and NiAl particles during subsequent aging, and the Cu-rich particles are further coarsened into bar-shaped fcc-Cu particles. The secondary precipitation and coarsening of Cu-rich and NiAl nanoparticles significantly enhanced the Orowan strengthening, resulting in an increase of precipitation strengthening from 280.4 MPa to 584.6 MPa. The excellent uniform elongation is attributed to the enhanced work hardening ability in the II stage due to the obvious TRIP effect of reversed austenite (RA). This work provides ideas for the microstructure design of Gpa-grade low-carbon nanostructured steel and achieves excellent strength-ductility.

引用

页数：10

共 47 条

[31] Abnormal TRIP effect on the work hardening behavior of a quenching and partitioning steel at high strain rate [J].

Wang, M. ;

Huang, M. X. .

ACTA MATERIALIA, 2020, 188 :551-559

[32] Nanolaminate transformation-induced plasticity-twinning-induced plasticity steel with dynamic strain partitioning and enhanced damage resistance [J].

Wang, M. -M. ;

Tasan, C. C. ;

Ponge, D. ;

Dippel, A. -Ch. ;

Raabe, D. .

ACTA MATERIALIA, 2015, 85 :216-228

[33] Smaller is less stable: Size effects on twinning vs. transformation of reverted austenite in TRIP-maraging steels [J].

Wang, M-M. ;

Tasan, C. C. ;

Ponge, D. ;

Kostka, A. ;

Raabe, D. .

ACTA MATERIALIA, 2014, 79 :268-281

[34] Optimising the strength-ductility-toughness combination in ultra-high strength quenching and partitioning steels by tailoring martensite matrix and retained austenite [J].

Wang, Z. ;

Huang, M. X. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2020, 134

[35] Synergy of strengthening and toughening of a Cu-rich precipitate-strengthened steel [J].

Wei, Xinghao ;

Cao, Xue ;

Luan, J. H. ;

Jiao, Z. B. ;

Liu, C. T. ;

Zhang, Z. W. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 832

[36] Tailoring Mechanical Properties of a Low Carbon Cu-Containing Structural Steel by Two-Step Intercritical Heat Treatment [J].

Xi, Xiaohui ;

Wang, Jinliang ;

Chen, Liqing ;

Wang, Zhaodong .

METALS AND MATERIALS INTERNATIONAL, 2019, 25 (06) :1477-1487

[37] A novel multi-step intercritical heat treatment induces multi-phase microstructure with ultra-low yield ratio and high ductility in advanced high-strength steel [J].

Xie, Z. J. ;

Han, G. ;

Zhou, W. H. ;

Wang, X. L. ;

Shang, C. J. ;

Misra, R. D. K. .

SCRIPTA MATERIALIA, 2018, 155 :164-168

[38] Precipitation strengthening of Cu/NiAl co-precipitates in a martensite-austenite dual-phase steel [J].

Xu, S. S. ;

Lu, X. H. ;

Liu, S. C. ;

Chen, L. ;

Zhang, Y. ;

Li, X. Z. ;

Zhang, Z. W. .

MATERIALS CHARACTERIZATION, 2021, 182

[39] Mechanical properties and deformation mechanisms of a novel austenite-martensite dual phase steel [J].

Xu, S. S. ;

Li, J. P. ;

Cui, Y. ;

Zhang, Y. ;

Sun, L. X. ;

Li, J. ;

Luan, J. H. ;

Jiao, Z. B. ;

Wang, X-L ;

Liu, C. T. ;

Zhang, Z. W. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2020, 128 (128)

[40] Precipitation kinetics and mechanical properties of nanostructured steels with Mo additions [J].

Xu, S. S. ;

Liu, Y. W. ;

Zhang, Y. ;

Luan, J. H. ;

Li, J. P. ;

Sun, L. X. ;

Jiao, Z. B. ;

Zhang, Z. W. ;

Liu, C. T. .

MATERIALS RESEARCH LETTERS, 2020, 8 (05) :187-194

← 1 2 3 4 5 →