Strategies for strengthening-ductility and hierarchical co-precipitation in multicomponent nano-precipitated steels by Cu partitioning

Yan, Jiacheng; Xu, Hongwei; Zuo, Xiaowei; Jia, Ting; Wang, Engang

doi:10.1016/j.msea.2018.10.036

Cited by 30 publications

(3 citation statements)

References 40 publications

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“…First, the Cu-rich precipitates at the grain boundaries may compromise the ductility. It was reported that when Cu-rich precipitates formed along grain boundaries during tempering, the ductility decreased in a low carbon steel with 2 wt-% Cu [9]. Second, the higher amount of pearlite in the 2QA steel, which has a higher strength than the ferrite, will give strain partitioning and lead to strain localization in the adjacent softer ferrite phase, which can compromise the ductility [33].…”

Section: Strength and Ductilitymentioning

confidence: 99%

“…Although Cu and Ni are in general considered as impurities or 'tramp elements' in scrap, they sometimes are purposely added to steel for better physical properties. Cu-rich clusters and precipitates are formed after aging at 350-760°C in steels alloyed with Cu from 1 wt-% up to 4 wt-% [4][5][6][7][8][9][10]. Those clusters and precipitates not only bring precipitation strengthening, but also enhance the thermal stability of grains via Zener pinning.…”

Section: Introductionmentioning

confidence: 99%

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Effect of impurities on the microstructure and mechanical properties of a low carbon steel

Duan

Farrugia

Davis

et al. 2021

Ironmaking & Steelmaking

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Impurity elements of Cu, Ni, Sn and Cr have been added to a model low-carbon strip steel to mimic the levels that could arise due to increased scrap recycling during steel production. The microstructure and tensile properties of the base composition and impurity added compositions after thermomechanical processing, consisting of hot rolling and simulated coil cooling, have been investigated. The addition of impurities results in a lower bainite fraction, a smaller effective grain size and the precipitation of Cu-rich particles. Meanwhile, higher strength and lower ductility are found in the steel with impurities.

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Section: Strength and Ductilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of impurities on the microstructure and mechanical properties of a low carbon steel

Duan

Farrugia

Davis

et al. 2021

Ironmaking & Steelmaking

View full text Add to dashboard Cite

show abstract

“…Low carbon martensitic steels with high strength, ductility, and toughness are highly desirable for a variety of structural applications, such as aerospace and automotive industries [1,2]. However, increasing strength often leads to a decrease in ductility and toughness, which is known as the strength-ductility/toughness trade-off dilemma in structural materials [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Cu-assisted austenite reversion and enhanced TRIP effect in maraging stainless steels

Niu

Yang

Luan

et al. 2022

Journal of Materials Science & Technology

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Sensitization and Mechanical Response of Cu‐Containing Steel Rods

Acharya,

Gandra,

Shyrokykh

et al. 2024

steel research int.

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The iron and steel manufacturing sector significantly adds to global greenhouse gas emissions, caused primarily by the carbothermic reduction of iron ore. Recycling scrap steel offers an effective decarbonization strategy but introduces impurities like copper (Cu) that can negatively impact mechanical properties. This study investigates the effects of Cu content and heat treatment on the mechanical performance and sensitization of steel wire rods for tire manufacturing. Steel rods with 0.04 and 0.21 wt% Cu are heated to 1050 or 1200 °C, then air quenched, or furnace cooled. Tensile testing coupled with microscopic analysis is used to evaluate mechanical properties and assess the sensitization effects. Higher Cu content leads to larger sensitized zones with increased Cu precipitation along grain boundaries. Ductility and toughness, crucial for wire drawability, are found to be reduced, despite higher ultimate strength. Slower furnace cooling is seen to result in smaller sensitized zones compared to air quenching, suggesting a pivotal role of cooling rate in sensitization control. The findings provide insights into optimize heat treatment parameters and Cu content limits, balancing mechanical performance and maintaining drawability for enhanced scrap steel recycling in tire production.

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Strategies for strengthening-ductility and hierarchical co-precipitation in multicomponent nano-precipitated steels by Cu partitioning

Cited by 30 publications

References 40 publications

Effect of impurities on the microstructure and mechanical properties of a low carbon steel

Effect of impurities on the microstructure and mechanical properties of a low carbon steel

Cu-assisted austenite reversion and enhanced TRIP effect in maraging stainless steels

Sensitization and Mechanical Response of Cu‐Containing Steel Rods

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