Microstructure and mechanical properties of a low C steel subjected to bainitic or quenching and partitioning heat treatments

Ebner, Sandra; Suppan, Clemens; Schnitzer, Ronald; Hofer, Christina

doi:10.1016/j.msea.2018.08.026

Cited by 33 publications

(12 citation statements)

References 37 publications

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“…The specimen subjected to spheroidizing heat treatment was broken with high ductility. There are many studies in the literature that support these results [2][3][4][5].…”

Section: Tensile Test Resultsmentioning

confidence: 88%

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Effect of Different Heat Treatments on Mechanical Properties of AISI Steels

Ekşi

2020

Sakarya University Journal of Science

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Heat treatment has great importance on the mechanical properties of materials. This paper reports experiments on effects of heat treatment on the mechanical and microstructures behavior of AISI 1040 and AISI 1060 steel. To analyze the effect of different heat treatments, AISI 1040 specimens were prepared through quenching, quenching and tempering, normalizing and spheroidizing. To understand effect of tempering time/temperature and annealing time on AISI 1060 steel specimens were prepared through annealing and tempering. Tensile test and hardness test were performed on steel specimens. The mechanical properties of steel specimens were correlated with the microstructure of steels.

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“…The specimen subjected to spheroidizing heat treatment was broken with high ductility. There are many studies in the literature that support these results [2][3][4][5].…”

Section: Tensile Test Resultsmentioning

confidence: 88%

“…There are many studies on heat treatment of steels [1][2][3][4][5][6][7][8][9][10][11][12][13]. Zhang et al investigated the effect of tempering temperature on the microstructure properties of stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Heat Treatments on Mechanical Properties of AISI Steels

Ekşi

2020

Sakarya University Journal of Science

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“…Nesse caso, à medida que essa bainita é formada durante a austêmpera, ocorre a partição do carbono, aumentando a concentração desse elemento na austenita remanescente. Evita-se, assim, que essa austenita transforme-se completamente em martensita quando o aço é resfriado até a temperatura ambiente, melhorando, portanto, a sua estabilidade térmica [20]. Dessa forma, a princípio, com a elevação do tempo, quanto mais bainita transformada, mais carbono estaria presente na austenita e, após o resfriamento, maior proporção de austenita retida seria verificada.…”

Section: Análise Da Fração Volumétrica De Austenita Retida E Seu Teor...unclassified

Análise microestrutural de um aço assistido pelo efeito TRIP obtido a partir de três diferentes ciclos térmicos

et al. 2022

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RESUMO A indústria automotiva está em constante busca pela diminuição do peso dos veículos, visando menor consumo de combustível e, conseqüentemente, a redução da emissão de gases tóxicos à atmosfera. Nesse contexto, foi desenvolvido o aço assistido pelo efeito TRIP, com o objetivo de aliar elevada resistência mecânica e ductilidade, características associadas tanto à sua microestrutura multiconstituída como à possibilidade de transformação da austenita retida em martensita durante a deformação plástica. Neste trabalho foram analisados os efeitos de três diferentes rotas de processamento térmico e da variação do tempo de austêmpera na microestrutura final e na dureza de um aço com baixo teor de carbono, de forma a obter uma microestrutura multiconstituída com a presença de austenita retida, o que possibilitaria a ocorrência do efeito TRIP. Os ciclos investigados envolveram etapa intercrítica seguida por austêmpera (ciclo CD), além de etapas prévias à intercrítica - têmpera (ciclo CT) e austenitização completa (ciclo CC). Observou-se que a aplicação dos ciclos térmicos distintos resultou em microestruturas cujos constituintes apresentaram distribuição, dimensões e morfologias diferentes entre si e que a elevação do tempo de austêmpera favoreceu a formação de bainita, reduzindo a quantidade de constituinte MA. Foi verificado ainda que, para os três ciclos, essa elevação do tempo de austêmpera provocou um aumento na proporção de austenita retida e de seu teor de carbono e uma redução nos valores de dureza verificados para o material.

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“…The availability as well as the possibility of implementing thermal treatment procedures have been included in Figure 1. At present, among those mentioned in Figure 1, the most commonly used types of thermal treatment implemented at a large scale in the production of steel forgings are normalization, toughening, and isothermal annealing, which are usually performed separately from the forging process [12][13][14][15].…”

Section: Subject Mattermentioning

confidence: 99%

Application of a Prototype Thermoplastic Treatment Line in Order to Design a Thermal Treatment Process of Forgings with the Use of the Heat from the Forging Process

et al. 2020

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The global production of die forgings is an important branch of the motor industry for obvious reasons, resulting from the very good mechanical properties of the forged products. The expectations of the recipients, beside the implementation of the forging process, include also a range of supplementary procedures, such as finishing treatment including shot blasting, thermal treatment, and machining, in order to ensure the proper quality of the provided semi-product or the ready detail for the assembly line. Especially important in the aspect of the operational properties of the products is the thermal treatment of the forgings, which can be implemented in many variants, depending on the expected results. Unfortunately, a treatment of this type, realized separately after the forging process, is very time and energy-consuming; additionally, it significantly raises the production costs due to the increased energy consumption resulting from the necessity of repeated heating of the forgings for such thermal treatment. The article reviews the most frequently applied (separately, after the forging process) thermal treatments for die forgings together with the devices/lines assigned for them, as well as presents an alternative (thermoplastic) method of forging production with the use of the forging heat. The paper also presents a prototype semi-industrial controlled cooling line developed by the authors, which allows the development of the assumed heat treatment of forgings directly after forging with the use of forging heat, together with sample results of conducted tests.

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Microstructure and mechanical properties of a low C steel subjected to bainitic or quenching and partitioning heat treatments

Cited by 33 publications

References 37 publications

Effect of Different Heat Treatments on Mechanical Properties of AISI Steels

Effect of Different Heat Treatments on Mechanical Properties of AISI Steels

Análise microestrutural de um aço assistido pelo efeito TRIP obtido a partir de três diferentes ciclos térmicos

Application of a Prototype Thermoplastic Treatment Line in Order to Design a Thermal Treatment Process of Forgings with the Use of the Heat from the Forging Process

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