The effect of intercritical heat treatment on the mechanical properties of AISI 3115 steel

Maleque, Abdul; Poon, Y. M.; Masjuki, H.H.

doi:10.1016/j.jmatprotec.2004.04.391

Cited by 73 publications

(32 citation statements)

References 5 publications

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“…This indicates that the strength values of the investigated tempered Fe-C specimen are higher than the strength of the as-received specimen, due to the presence of the harder second phase in the tempered Fe-C specimens which is martensite [20]. However, it should be noted that the strength of martensite formed in soft ferrite matrix may be different from the structure formed when steel is transformation from austenite to 100% martensite [21]. …”

Section: Tensile Propertiesmentioning

confidence: 86%

Evaluation of fatigue crack growth rate for iron-carbon metals based on degradation-entropy generation theorem

Idris

Abdullah

Thamburaja

et al. 2018

J. Fundam and Appl Sci.

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This paper presents the evaluation of fatigue crack growth rate for on degradation-entropy generation theorem. The different microstructural phases present in tempered Fe-C steels can influence the fatigue strength. and crack propagation are intimately related within the degradation arrived from consideration of the degradation temperature evolution is measured through a fatigue crack growth test induced upo tempered Fe-C steels material compared to measured Paris-regime crack growth data surface temperature of a specimen under fatigue crack growth test can be used to determine the rate of crack growth by intensity of the degradation coefficient.Keywords: degradation-entropy generation theorem; entropy generation; fatigue crack growth rate; tempered Fe-C steel. The relationships between entropy coefficient that could be To ensure validity, temperature evolution is measured through a fatigue crack growth test induced upon a ly, the results of the present model are , thus arriving at a conclusion that the surface temperature of a specimen under fatigue crack growth test can be used to determine entropy generation theorem; entropy generation; fatigue crack

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Section: Tensile Propertiesmentioning

confidence: 86%

Evaluation of fatigue crack growth rate for iron-carbon metals based on degradation-entropy generation theorem

Idris

Abdullah

Thamburaja

et al. 2018

J. Fundam and Appl Sci.

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“…In Zahid et al [6], specimens corresponding to all heat treatment temperatures showed higher hardness as compared to the annealed specimens of the same steel. In general, quenching and tempering results the optimum fatigue properties in heat treated steels although at a hardness level above about Rc 40 bainitic structure produced by austempering results in better fatigue properties than quenched and tempered structure with the same hardness [7]. The poor performance of the quenched and tempered structure indicated by electron micrographs is the result of stress concentration effects of the thin carbide films which are formed during the formation of martensite in tempering and also the fatigue limits increases with decreasing tempering temperature up to a hardness Rc 45 to Rc 55 which is well explained [8].…”

Section: Introductionmentioning

confidence: 94%

The Effect of Heat Treatment on the Mechanical Properties of SAE 1035 Steel

Obiukwu

Udeani

Ubani

2016

IJET

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Abstract. The effect of various heat treatment operations (annealing, normalizing, tempering) on mechanical properties of 0.35% carbon steel was investigated. The change in the value of endurance limit of the material as a result of the various heat-treatment operations were studied thoroughly. It was found that the specimens tempered at low temperature (200 0 C) exhibited the best fatigue strength. Microscope was used to characterize the structural properties resulting from different heat treatment processes. The results from the tensile tests impact tests and hardness tests showed that the mechanical properties variate at every heat-treatment conditions. The microstructure of differently heat-treated steels was also studied.

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“…3 The intercritical heat treatment, which involves holding in the two-phase (a+g) region, followed by quick cooling, is frequently applied to obtain ferrite and martensite phases in a low-alloy steel. [4][5][6][7][8] Previous investigations suggested that different chemical compositions, thermomechanical processing routes or heat treatments lead to different microstructural configurations, different phase-space distributions and other microstructure characteristics, affecting the deformation and failure behaviors of DP steels. 9,10 Recently, researchers obtained the flow curves of the composite phases using micromechanical modelling based on the RVEs selected from a real microstructure.…”

Section: Introductionmentioning

confidence: 99%

Phase-transformation behavior and micromechanical properties of a dual-phase steel after chemical modifications

Zhao¹,

Zhao²,

Sun³

et al. 2017

Mater. Tehnol.

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In this work, the phase-transformation behavior and micromechanical properties of a dual-phase steel after chemical modifications were investigated theoretically and experimentally. In particular, the micromechanical behavior of the steel was modeled, based on the effects of the microstructure, phase fractions, local compositions of single phases and their area shapes. The developed model was used for predicting the damage behavior of a specimen. It was demonstrated that the tensile strength increased with the increasing temperature due to an increase in the amount of martensite in the steel, but the hardening behavior of this specimen was affected by the microstructure. Furthermore, the flow curves of the steel under different intercritical temperatures could be well predicted based on the real microstructures. The subsequent simulation results showed that while higher stress concentrated on the martensite, the shear-band appearance strongly depended on the microstructures of the phases. In addition, for the prediction of damage behaviors, the true stress/true strain curves of macroscale simulations showed good agreement with the experiments involving differently heat-treated steels. Keywords: intercritical treatment, steel, micro model V tem delu so teoreti~no in eksperimentalno preiskovali fazne spremembe in mikromehanske lastnosti dvofaznega jekla po kemijskih prilagoditvah. [e posebej je bilo modelirano mikromehansko obna{anje jekla glede na mikrostrukturo, dele`e posameznih faz, lokalno sestavo posameznih faz in njihovo morfologijo. Razviti model je bil uporabljen za napoved po{kodb vzorca. Dokazano je bilo, da se natezna trdnost pove~uje z nara{~ajo~o temperaturo zaradi nara{~anja vsebnosti martenzita v jeklu, vendar je na kaljivost tega vzorca vplivala mikrostruktura. Nadalje je bilo ugotovljeno, da je mo`no krivulje te~enja jekla pri razli~nih interkriti~nih temperaturah dobro napovedati na podlagi dejanskih mikrostruktur. Nadalje so rezultati simulacij pokazali, da so vi{je napetosti koncentrirane na martenzitu in isto~asna prisotnost stri`nih pasov, mo~no odvisne od mikrostruktur posameznih faz. Poleg tega je za napoved po{kodb pomembno, da se prave krivulje napetost-deformacija, dobljene s pomo~jo simulacij na makronivoju, dobro ujemajo z eksperimentalnimi, dobljenimi pri razli~no toplotno obdelanih jeklih.

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The effect of intercritical heat treatment on the mechanical properties of AISI 3115 steel

Cited by 73 publications

References 5 publications

Evaluation of fatigue crack growth rate for iron-carbon metals based on degradation-entropy generation theorem

Evaluation of fatigue crack growth rate for iron-carbon metals based on degradation-entropy generation theorem

The Effect of Heat Treatment on the Mechanical Properties of SAE 1035 Steel

Phase-transformation behavior and micromechanical properties of a dual-phase steel after chemical modifications

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