Microstructural development and mechanical properties during hot rolling and annealing of an automotive steel combining TRIP/TWIP effects

Elvira, E.D. Palma; Garnica-González, Pedro; Cedeño, José Sergio Pacheco; Rivera, J.J. Cruz; Ramos-Azpeitia, M.; Garay-Reyes, C.G.; Hernández-Rivera, J.L.

doi:10.1016/j.jallcom.2019.05.130

Cited by 19 publications

(4 citation statements)

References 10 publications

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“…After hot forging, phase transformation and large amounts of mechanical twins were generated and the grains were refined. In favor of the TRIP-TWIP-coupled effect [5,31,33,34] and grain refinement strengthening, the annealed specimens obtained a higher yield strength and elongation. During subsequent annealing, accompanying the formation of annealing twins, the FCC phase continued to transform, with the TRIP-TWIP coupled effect being exerted [35][36][37][38].…”

Section: Fe50mn30co10cr10 Alloy Strengthening and Toughening Mechanismmentioning

confidence: 97%

Improving Mechanical Properties of a Forged High-Manganese Alloy by Regulating Carbon Content and Carbide Precipitation

Pan

Liu

Jiang

et al. 2022

Metals

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The effect of different heat treatment processes (as-cast, annealing, forging, and annealing after forging) on the microstructure transition and mechanical property evolution of Fe50Mn30Co10Cr10 alloys with different carbon contents (0, 0.2, 0.5 wt.%) was investigated, and a potential strengthening–toughening mechanism was revealed. With 0.5 wt.% carbon added, the interstitial carbon atoms provided a great deal of strength and the highest hardness was obtained. Meanwhile, the high carbon content generated a large amount of stacking fault energy and inhibited the transition of a face-centered cubic (FCC) to a hexagonal close-packed phase (HCP); as such, the TRIP and TWIP effects were induced during deformation and a favorable ductility with the largest elongation to fracture (of 141%) was achieved. The forged-annealed specimen with 0.2 wt.% carbon obtained favorable comprehensive mechanical properties, with an ultimate tensile strength of 795 MPa and an elongation of 104%. After forging, the grains were refined and several dislocations were generated; as such, the yield strength was greatly improved. With subsequent annealing, a good phase distribution of FCC and HCP was achieved, inducing the TRIP and TWIP effects during deformation and producing favorable ductility.

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Section: Fe50mn30co10cr10 Alloy Strengthening and Toughening Mechanismmentioning

confidence: 97%

Improving Mechanical Properties of a Forged High-Manganese Alloy by Regulating Carbon Content and Carbide Precipitation

Pan

Liu

Jiang

et al. 2022

Metals

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“…Based on the comprehensive consideration of reducing energy consumption and improving safety performance, lightweight materials are becoming more prominent in the automobile industry. Twinning induced plasticity (TWIP) steel has excellent strength, plasticity and energy absorption, which makes it a good material for the structural parts of automobiles and anticollision parts [1,2]. The microstructure of TWIP steel is a single γ phase, and its excellent ductility is attributed to the strain hardening effect during plastic deformation [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of cerium addition on the microstructure, mechanical properties and strain hardening behavior of TWIP steel Fe-18Mn-0.6C

Zhong

Wang

Luo

et al. 2022

Materials Characterization

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“…Numerous papers have studied transformation induced plasticity in austenitic stainless steels. Some examples: (Hecker et al, 1982;Mangonon & Thomas, 1970;Murr et al, 1982;Nagy, Mertinger, Tranta, & Sólyom, 2004;Nakajima, Akita, Uematsu, & Tokaji, 2010;Okayasu, Fukui, Ohfuji, & Shiraishi, 2013;Palma-Elvira et al, 2019;Rodríguez-Martínez, Rusinek, & Pesci, 2010;Spencer et al, 2004;J. Talonen, Aspegren, & Hänninen, 2004;Juho Talonen, 2007;Tavares, Pardal, da Silva, Abreu, & da Silva, 2009;Tsuchida et al, 2011;Weiß, Gutte, & Mola, 2016;Xu, Zhang, Cheng, & Song, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Research on martensitic transformation into austenitic stainless steels has been carried out frequently, as previously mentioned. Many studies involve monotonic loading related to the formed martensite (Galindo-Nava & Rivera-Díaz-del-Castillo, 2017;Palma-Elvira et al, 2019;Juho Talonen, 2007). In practice, these steels are subject to diverse types of loading, possibly with stress concentrators.…”

Section: Introductionmentioning

confidence: 99%

Study of Martensitic Transformation in 304L Austenitic Stainless Steel after Tensile and Low Cycle Fatigue Tests

Fonseca¹,

Oliveira²,

Chaves³

et al. 2019

JMSR

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There are many studies on austenitic stainless steels with transformation induced plasticity (TRIP). Basically, in these steels, there is a significant increase in strength and toughness with the transformation of austenite to martensite. 304L steel finds extensive application in industry. Studies relating to martensitic transformation with plastic deformation are quite common. Many studies involve monotonic loading relating to the martensite formed. In practice, 304L steels are subject to distinct types of loading and possibly with stress concentrators. Thus, also in smaller quantities, it is possible to find in the literature studies involving cyclic loading with the TRIP effect. To contribute to the literature on the analysis of the TRIP effect on these steels, 304L steel samples with stress concentrators underwent interrupted monotonic tensile tests. Optical microscopy (OM) and x-ray diffraction (XRD) technique characterized the martensitic transformation. Other 304L steel samples with a stress concentrator underwent a low cycle fatigue test. The martensitic transformation, in this case, was possible to follow with the electron backscatter diffraction technique (EBSD). The samples after the interrupted monotonic tests show a high martensite volume fraction formed 1mm away from the notch (30% to 50%), due to the plastic deformation suffered. From 5.5mm of the notch, the samples again display a microstructure like that of the as-received (AR) sample. For the low cycle fatigue tested sample, the high concentration of deformation-induced martensite was within 15mm of the discontinuity. Approximately 0.5mm from the circular discontinuity, the sample again has a microstructure like the initial sample (IS).

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Microstructural development and mechanical properties during hot rolling and annealing of an automotive steel combining TRIP/TWIP effects

Cited by 19 publications

References 10 publications

Improving Mechanical Properties of a Forged High-Manganese Alloy by Regulating Carbon Content and Carbide Precipitation

Improving Mechanical Properties of a Forged High-Manganese Alloy by Regulating Carbon Content and Carbide Precipitation

Effects of cerium addition on the microstructure, mechanical properties and strain hardening behavior of TWIP steel Fe-18Mn-0.6C

Study of Martensitic Transformation in 304L Austenitic Stainless Steel after Tensile and Low Cycle Fatigue Tests

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