Microstructure evolution under various austenitizing and tempering temperatures and its strengthening mechanism in a low-alloy martensitic steel
Source abstract
Abstract
This study systematically investigates the effects of austenitizing temperature on the microstructure-property relationship of D406A steel subjected to quenching and tempering. The microstructural characteristics are analyzed, and the kernel average misorientation (KAM) parameter is used to quantify local orientation variations. The prior austenite grain (PAG) size is determined via EBSD-based reconstruction, and the sizes of martensite packets, blocks, and laths are quantitatively measured. The results indicate that the sizes of PAGs, martensite packets, and martensite blocks decrease with decreasing austenitizing temperature, whereas the martensite lath size slightly increases. The highest strength-ductility product of 11719.8 MPa·% can be obtained for the QT890 sample, revealing an outstanding strength-ductility synergy. The strengthening mechanism of D406A steel is mainly attributed to solid solution strengthening, dislocation strengthening and grain boundary strengthening.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Microstructure and Mechanical Properties of Steels · High Temperature Alloys and Creep · Shape Memory Alloy Transformations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Simultaneous increase of ultimate tensile strength and uniform elongation of 30Si2MnCrMoVE ultra-high strength steel by hot deformation direct quenching and partitioning10.1016/j.jmrt.2022.05.072 ↗
2. Characterization of hot deformation behavior of 30Si2MnCrMoVE low-alloy ultra-high-strength steel by constitutive equations and processing maps10.1007/s42243-019-00335-6 ↗
3. The effect of austenitising temperature on prior austenite grain size in a low-alloy steel10.1016/j.msea.2006.11.172 ↗
4. Effects of austenitizing temperature on microstructure and mechanical property of a 4-GPa-grade PM high speed steel10.1016/j.msea.2018.02.010 ↗
5. Effect of austenitization temperature on microstructure, crystallographic aspects, and mechanical properties of AISI 420 martensitic stainless steel10.1016/j.msea.2024.146835 ↗
6. Effects of quenching temperature on the microstructure and impact toughness of 50CrMnSiVNb spring steel10.1016/j.msea.2023.144856 ↗
7. Microstructure evolution under different austenitizing temperatures and its effect on mechanical properties and mechanisms in a newly high aluminum bearing steel10.1016/j.jmrt.2024.06.030 ↗
8. Effect of austenitizing temperature on martensitic transformation in SA508Gr.4N steel10.1016/j.jmst.2023.11.012 ↗
9. Effect of austenitizing temperature on isothermal quenching microstructure and mechanical properties of 52100 bearing steel10.1016/j.msea.2023.146051 ↗
10. Effect of austenitizing temperature on microstructure and mechanical properties of medium carbon spring steel
11. Enhancing sulfide stress cracking resistance of a Cu-bearing high strength low alloyed steel through decreasing austenitizing temperature10.1016/j.jmrt.2025.01.219 ↗
12. Effect of austenitization an d tempering treatments on the mechanical properties of advanced high strength spring steel SAE 9254
13. Influence of quenching–partitioning–tempering(QPT) process on microstructure and mechanical properties of Ce-microalloyed low alloy steels10.1016/j.jmrt.2025.09.038 ↗
14. Hydrogen embrittlement of a V+Nb-microalloyed high-strength bolt steel subjected to different austenitizing temperatures10.1016/j.engfailanal.2024.109178 ↗
15. Conditions for grain boundary bulging during tempering of lath martensite in ultra-low carbon steel10.2355/isijinternational.50.771 ↗
16. The effects of austenitization temperature on the microstructural characteristics and mechanical properties of Cr–Mo–V hot work tool steels with different nitrogen contents10.1016/j.jmrt.2024.05.264 ↗
17. Effect of austenite stability on toughness, ductility, and work-hardening of medium-Mn steel10.1080/02670836.2018.1522088 ↗
18. Effect of hot rolling temperature on the microstructure and mechanical properties of ultra-low carbon medium manganese steel10.1016/j.msea.2018.06.020 ↗
19. Study on the kinetics of β→α phase transformation in 47Zr–45Ti–5Al–3V alloy under isothermal conditions studied by X-ray diffraction10.1016/j.matchar.2015.12.010 ↗
20. Study on the relationship between refined hierarchical microstructure, yield strength and impact toughness of low-carbon martensitic steel at different quenching temperatures10.1016/j.msea.2024.146271 ↗
21. Effect of block size on the strength of lath martensite in low carbon steels10.1016/j.msea.2005.12.048 ↗
22. Interphase precipitation of nanometer-sized carbides in a titanium–molybdenum-bearing low-carbon steel10.1016/j.actamat.2011.06.037 ↗
23. Influence of cooling paths on microstructural characteristics and precipitation behaviors in a low carbon V–Ti microalloyed steel10.1016/j.msea.2013.09.086 ↗
24. Strengthening a fine-grained low activation martensitic steel by nanosized carbides10.1016/j.msea.2019.138471 ↗
25. Effect of chemical composition on yield strength of TWIP steels10.1016/j.msea.2017.01.080 ↗
26. A heat-resistant steel with excellent high-temperature strength–ductility based on solid-solution strengthening and precipitation hardening10.1016/j.msea.2024.147218 ↗
27. Microstructural evolution and mechanical properties of 6Cr13 martensitic stainless steel subjected to cold rolling and heat treatments10.1016/j.matchar.2023.113070 ↗
28. Revisiting the effect of austenite grain size on hierarchical structure and mechanical properties of high-strength steel10.1016/j.jmrt.2025.11.047 ↗
29. A novel ultra-high strength maraging steel with balanced ductility and creep resistance achieved by nanoscale β-NiAl and Laves phase precipitates10.1016/j.actamat.2018.02.044 ↗
30. Synergistic strengthening through dislocations and precipitates in 3Cr13MoV martensitic stainless steel achieving excellent strength–toughness balance10.1016/j.jallcom.2025.180111 ↗
31. Synergy of dislocation proliferation and dual-nano precipitation in 2.5 GPa ultrahigh-strength steel10.1016/j.matchar.2025.115723 ↗
32. Heat treatment process and strength–toughness mechanism of low-alloy cast steel for high-speed railway brake discs
33. Effect of phase-selective nanoscale precipitates on the Bauschinger effect in austenitic-ferritic duplex stainless steels10.1007/s11661-022-06793-0 ↗
34. Enabling strong and formable advanced high-strength steels through inherited homogeneous microstructure10.1016/j.scriptamat.2025.116560 ↗