Effect of microstructure on tensile properties of quenched and partitioned martensitic stainless steels

Sierra-Soraluce, Andres; Li, Gaojie; Santofimia, M.J.; Molina-Aldareguia, J.M.; Smith, Ali; Muratori, Marta; Sabirov, I.

doi:10.1016/j.msea.2022.144540

Cited by 11 publications

(9 citation statements)

References 49 publications

(95 reference statements)

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“…Given the small fraction of Ti and Nb, and the superior fraction of C, it is known and established that all of them have precipitated in the form of carbides (consuming a low amount of C along), as it was proven in our recent work, where a thorough microstructural characterization of the studied alloys was performed. [11] Similar observations were also reported for a Nbmicroalloyed QP-treated carbon steel by Xia et al [12] The effects of the modifications of alloy 3 are here observed, achieving a higher fraction of retained austenite and showing a general reduction of the grain size, which is related to the controlled prior austenite grain size (from PAG size 38.3 μm in alloy 1, to 20.4 μm in alloy 3) via nanocarbides precipitation, as recently reported in ref. [11].…”

Section: Microstructural Characterizationsupporting

confidence: 90%

“…The partitioning parameters used in this study were determined in previous research to provide the most favorable partitioning for the obtained retained austenite. [ 11 ]…”

Section: Methodsmentioning

confidence: 99%

“…This trend is related to the increasing content of austenite‐stabilizing alloying elements (C, Mn). [ 11 ]…”

Section: Methodsmentioning

confidence: 99%

“…This trend is related to the increasing content of austenite-stabilizing alloying elements (C, Mn). [11] Further analysis is carried out for alloy 3 (undeformed, Geometry 0), estimating its fresh martensite fraction according to the work [24] and collected in Table 4. The prior austenite grains (PAG) are reconstructed using the MTEX package for MATLAB.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…Regarding grade 410, Tobata et al [ 6 ] investigate the effect of silicon content and QP parameters on microstructure and strength–ductility balance, and Tsuchiyama et al [ 7 ] study the effect of carbon content. In terms of grade 420, Huang et al [ 8 ] focus on the impact of the heat treatment on the microstructural parameters; Yuan et al [ 9 ] analyze the stability of retained austenite during plastic deformation; Mola and De Cooman [ 10 ] investigate the microstructure–property relationship; and Sierra‐Soraluce et al [ 11 ] study the effect of chemistry on the microstructure, tensile deformation behavior, and microstructure evolution during plastic deformation of QP‐treated MSSs. In these works, high volume fractions of retained austenite are achieved in the final microstructure: up to a 15% in 410 (low C, 0.12–0.13 wt%) [ 6 ] and up to 57% in 420 (medium C, 0.47 wt%).…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Feasibility of Cold Forming of Automotive Parts from Quenched and Partitioned Martensitic Stainless Steels

Pablos

Sierra-Soraluce

Sabirov

et al. 2023

steel research int.

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Sheet metal forming is among the most widely employed processes in manufacturing. Its economic feasibility relies on many factors, including the mechanical properties of the processed materials, energy efficiency of the metalforming processes and quality of the manufactured parts. This work focuses on developing a computational approach to assess the mechanical behavior of Quenched and Partitioned (QP) Martensitic Stainless Steels (MSSs) undergoing cold forming, aiming at the serial production of automotive parts. The Johnson‐Cook (J‐C) constitutive model and Forming Limit Diagram (FLD) are derived and validated for each alloy using the experimental data from tensile and Nakajima tests. From the simulated FLD, a theoretical Forming Limit Stress Diagram (FLSD) is calculated. The latter is used as a fracture criterion for the cold‐forming process. Cold stamping of two automotive parts, B‐pillar and tunnel, is modeled using the J‐C constitutive model and the FLSD. It is demonstrated that the tunnel can be successfully cold‐formed from all three studied steels. In contrast, extensive cracking is expected during the cold forming of the B‐pillar from all materials. It is envisaged that these computational models can be employed for the assessment of any comparable part manufacturing procedure from the QP MSSs.This article is protected by copyright. All rights reserved.

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Section: Microstructural Characterizationsupporting

confidence: 90%

“…The partitioning parameters used in this study were determined in previous research to provide the most favorable partitioning for the obtained retained austenite. [ 11 ]…”

Section: Methodsmentioning

confidence: 99%

“…This trend is related to the increasing content of austenite‐stabilizing alloying elements (C, Mn). [ 11 ]…”

Section: Methodsmentioning

confidence: 99%

Section: Microstructural Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Assessing the Feasibility of Cold Forming of Automotive Parts from Quenched and Partitioned Martensitic Stainless Steels

Pablos

Sierra-Soraluce

Sabirov

et al. 2023

steel research int.

Self Cite

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The Reliability of Single-Step and Double-Step Quench and Partitioning Heat Treatments on an AISI 420A Low Carbon Martensitic Stainless Steel

Barella

Gruttadauria

Menezes

et al. 2023

Metall Mater Trans A

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The microstructural and mechanical effects of various single-step (SS) and double-step (DS) quench and partition (Q&P) heat treatments applied to an AISI 420A low carbon martensitic stainless steel (MSS) has been studied. The goal with this work is to reach a total elongation (E pct) of 12 pct and an ultimate tensile strength (UTS) above 1200/1300 MPa, but ultimately to achieve a superior strength-ductility balance in comparison to its traditional Quench and Temper (Q&T) counterpart. This is being done by retaining austenite within the steel’s martensitic matrix at room temperature (RT) using novel SS and conventional DS Q&P heat treatments. Considerable work has been done to optimize DS Q&P heat treatments, but little has been done to understand the effects of removing a subsequent heating cycle through SS Q&P heat treatments has on MSSs. With that being said, partitioning is performed at the same quench interruption temperature for the SS Q&P heat treatments, and reheated to a higher temperature for the DS Q&P heat treatments. Experimental investigations were carried out on 1 mm thick, sheet samples to increase the number of potential applications for this steel and heat treatment. The microstructure of different SS and DS Q&P heat treatments was investigated through X-ray diffraction (XRD) and transmission electron microscopy (TEM) while mechanical property investigations were carried out using tensile and fracture toughness testing. DS Q&P heat treated samples quenched to 130 °C and partitioned for industrially relevant times of 10 and 30 minutes featured the highest values in terms of total elongation, tensile strength and fracture toughness. The SS Q&P heat treatments, on the other hand, were able to achieve improved mechanical properties to its Q&T counterpart. Overall, this work opens up the possibility of increased MSS usage for reliable, thin-walled component production with improved properties through Q&P heat treatment methods. The best results achieved in this study are a UTS of 1585 MPa, E pct of 22 pct, and a fracture toughness of 77 kJ/m2. Their lower total elongation of 9.6 pct is balanced by high tensile strength of 1812 MPa, ensuring higher toughness compared to traditional Q&T samples.

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Microstructure Features and Tensile Properties of a Recent Ultra-High-Strength Steel via Two-Step Quenching and Partitioning Process

El-Shenawy

El-Din

Fouad

et al. 2023

Metallogr. Microstruct. Anal.

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Effect of microstructure on tensile properties of quenched and partitioned martensitic stainless steels

Cited by 11 publications

References 49 publications

Assessing the Feasibility of Cold Forming of Automotive Parts from Quenched and Partitioned Martensitic Stainless Steels

Assessing the Feasibility of Cold Forming of Automotive Parts from Quenched and Partitioned Martensitic Stainless Steels

The Reliability of Single-Step and Double-Step Quench and Partitioning Heat Treatments on an AISI 420A Low Carbon Martensitic Stainless Steel

Microstructure Features and Tensile Properties of a Recent Ultra-High-Strength Steel via Two-Step Quenching and Partitioning Process

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