Effect of austenitization temperature and partitioning/tempering time on multiphase microstructure during quenching-partitioning-tempering of low-alloy ferritic steels

被引：0
作者：
Gao, Chen [1 ]
Wang, Wei [1 ]
Ning, Conghui [1 ]
Wang, Yenan [1 ]
Tao, Anqi [1 ]
Xiao, Yuhang [1 ]
机构：
[1] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2025年 / 46卷
基金：
中国国家自然科学基金;
关键词：
Low-alloy ferritic steel; Retained austenite; Vickers hardness; Carbon partitioning; epsilon-carbide precipitation; omega-phase; Twinning mechanism; Quenching partitioning tempering (Q&P&T); HIGH-STRENGTH STEEL; MECHANICAL-PROPERTIES; RETAINED AUSTENITE; HEAT-TREATMENT; PHASE-TRANSFORMATIONS; OMEGA PHASE; C STEEL; M-S; MARTENSITE; ENHANCEMENT;
D O I：
10.1016/j.mtcomm.2025.112541
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of austenitization temperature and partitioning/tempering time on microstructural evolution during quenching-Partitioning-Tempering (Q&P&T) treatment was investigated. The results showed that multiphase microstructure consisting of primary martensite, lower bainite, filmy/blocky retained austenite, and carbide precipitation were produced in low-alloy ferritic steel. A total of 36 regimes with the austenitization temperature 950 degrees C and 1100 degrees C, the quenching temperature of 260 degrees C, 280 degrees C and 300 degrees C, the partitioning temperatures of 400 degrees C, and partitioning time of 2-62 minutes were applied. In this study, Vickers hardness measurements were utilized to assess the mechanical properties of metallic materials. Through TEM characterization and selected area electron diffraction, key findings include: Filmy retained austenite exhibited high stability due to carbon enrichment, whereas blocky retained austenite partially transformed into twinned martensite containing omega-phase, revealing a trade-off between strengthening effects and ductility loss; Phase transformation strain during quenching/partitioning triggered {112}< 111 > twinning, with omega-phase reverse transformation (HCP -> BCC) driving the twinning mechanism via elastic bending and short-range diffusion. This work provides a process design framework for developing low-alloy steels with combined high strength and toughness.
引用
收藏
页数：13
相关论文
共 60 条
[1]  
Antu M.N.R., 2025, Prog. Eng. Sci., V2, DOI [10.1016/j.pes.2025.100052, DOI 10.1016/J.PES.2025.100052]
[2]   Improvement of tensile mechanical properties in a TRIP-assisted steel by controlling of crystallographic orientation via HSQ&P processes [J].
Ariza, E. A. ;
Masoumi, M. ;
Tschiptschin, A. P. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 713 :223-233
[3]   Development of a new generation of quench and partitioning steels: Influence of processing parameters on texture, nanoindentation, and mechanical properties [J].
Ariza-Echeverri, E. A. ;
Masoumi, M. ;
Nishikawa, A. S. ;
Mesa, D. H. ;
Marquez-Rossy, A. E. ;
Tschiptschin, A. P. .
MATERIALS & DESIGN, 2020, 186
[4]   Prediction of Carbon Partitioning and Austenite Stability via Non-equilibrium Thermodynamics in Quench and Partition (Q&P) Steel [J].
Behera, Amit K. ;
Olson, G. B. .
JOM, 2019, 71 (04) :1375-1385
[5]   The influence of the austenite grain size on the microstructural development during quenching and partitioning processing of a low-carbon steel [J].
Celada-Casero, Carola ;
Kwakernaak, Cees ;
Sietsma, Jilt ;
Santofimia, Maria Jesus .
MATERIALS & DESIGN, 2019, 178
[6]   Near-Ac3 austenitized ultra-fine-grained quenching and partitioning (Q&P) steel [J].
Cho, Lawrence ;
Seo, Eun Jung ;
De Cooman, Bruno C. .
SCRIPTA MATERIALIA, 2016, 123 :69-72
[7]   Phase transformations during the decomposition of austenite below Ms in a low-carbon steel [J].
da Silva, Elisabete Pinto ;
Xu, Wei ;
Fojer, Cecilia ;
Houbaert, Yvan ;
Sietsma, Jilt ;
Petrov, Roumen H. .
MATERIALS CHARACTERIZATION, 2014, 95 :85-93
[8]   Quenching and partitioning martensite - A novel steel heat treatment [J].
Edmonds, D. V. ;
He, K. ;
Rizzo, F. C. ;
De Cooman, B. C. ;
Matlock, D. K. ;
Speer, J. G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :25-34
[9]   Concurrent enhancement of ductility and toughness in an ultrahigh strength lean alloy steel treated by bainite-based quenching-partitioning-tempering process [J].
Gao, Guhui ;
An, Baifeng ;
Zhang, Han ;
Guo, Haoran ;
Gui, Xiaolu ;
Bai, Bingzhe .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 702 :104-112
[10]   Enhanced ductility and toughness in an ultrahigh-strength Mn-Si-Cr-C steel: The great potential of ultrafine filmy retained austenite [J].
Gao, Guhui ;
Zhang, Han ;
Gui, Xiaolu ;
Luo, Ping ;
Tan, Zhunli ;
Bai, Bingzhe .
ACTA MATERIALIA, 2014, 76 :425-433
123456