Role of trace nanoparticles in establishing fully optimized microstructure configuration of cold-rolled Al alloy

Liu, Tianshu; Qiu, Feng; Dong, Bai‐Xin; Geng, Run; Zha, Min; Yang, Hong–Yu; Shu, Shili; Jiang, Qi‐Chuan

doi:10.1016/j.matdes.2021.109743

Cited by 64 publications

(13 citation statements)

References 57 publications

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“…The difference in thermal expansivity between nano‐TiC and α‐Fe causes various defects during quenching. Precipitation phase Cr 23 C 6 is formed after the tempering heat treatment, and the nucleation rate of Cr 23 C 6 ( N ) can be described as [ 8 ]

N \textrm{ } \propto \textrm{ } \text{exp} \left(\right. - \Delta G^{\star} / \gamma T \left.\right)

$\Delta G \star = 16 \text{ π} \left(\sigma\right)^{3} / 3 \left(\left(\right.

…”

Section: Discussionmentioning

confidence: 99%

“…The difference in thermal expansivity between nano-TiC and α-Fe causes various defects during quenching. Precipitation phase Cr 23 C 6 is formed after the tempering heat treatment, and the nucleation rate of Cr 23 C 6 (N) can be described as [8] N ∝ expðÀΔG Ã =γTÞ (6)…”

Section: Microstructure Manipulation Methodsmentioning

confidence: 99%

“…[6,7] There are many methods to improve the strength and toughness of structural steel, including melt purification, alloying, electroslag remelting, and forging. [6][7][8][9][10] However, some properties of structural steel strengthened by these traditional methods may be weakened after different heat treatments. [10][11][12][13][14][15] Therefore, it is necessary to invent methods that can improve performance without weakening due to post-heat treatment.…”

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confidence: 99%

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Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

Chang

Shu

et al. 2023

Adv Eng Mater

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In order to improve the service life of die steels, many methods have been used to improve their properties. However, some properties may be weakened after different heat treatments. In this study, a novel method of nanoparticle treatment was used to improve the service performance of high Cr steel, and the effect of nano‐TiC ceramic particles on its microstructures and properties under different heat treatment conditions was investigated. After forging and isothermal spheroidization, the nano‐TiC ceramic particles treatment high Cr steel has a mixed grain with equiaxed grain and striated grain. Under different heat treatment conditions, the nano‐TiC reinforced high Cr steel has refined martensite laths, carbides, and a higher content of retained austenite. In contrast, the nano‐TiC ceramic particles reinforced high Cr steel have higher strength and strain, the yield strength (σ0.2), tensile strength (σb), fracture strain, product of strength and strain, and impact toughness of HCS‐51 (HCSN‐51), are 1349 MPa (1531 MPa), 1662 MPa (1770 MPa), 9.4% (12.1%), 12405 MPa·% (18766 MPa·%) and 266 J/cm2 (445 J/cm2), which is 13.5%, 6.5%, 28.7%, 51.3% and 67.3% higher, respectively. The primary strengthening mechanisms included fine‐grain strengthening and precipitation strengthening. The main toughness mechanism was fine‐grain and transformation‐induced plasticity.This article is protected by copyright. All rights reserved.

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N \textrm{ } \propto \textrm{ } \text{exp} \left(\right. - \Delta G^{\star} / \gamma T \left.\right)

$\Delta G \star = 16 \text{ π} \left(\sigma\right)^{3} / 3 \left(\left(\right.

…”

Section: Discussionmentioning

confidence: 99%

Section: Microstructure Manipulation Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

Chang

Shu

et al. 2023

Adv Eng Mater

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“…Al alloys are indispensable materials used for industrial structural parts [52][53][54][55][56], but Al alloys are highly difficult to process with LDED due to the inherent characteristics of Al alloys [31][32][33]57], which will be discussed in detail below. [58].…”

Section: Challenges Associated With Intrinsic Characters Of Al Alloysmentioning

confidence: 99%

Review on laser directed energy deposited aluminum alloys

Liu,

Chen,

Qiu

et al. 2024

Int. J. Extrem. Manuf.

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The lightweight aluminum (Al) alloys have been widely used in frontier fields like aerospace and automotive industries, which attracts great interest in additive manufacturing to process high-value Al parts. As a mainstream additive manufacturing technique, laser directed energy deposition (LDED) shows good scalability to meet requirements for large-format components manufacturing and repairing. However, LDED Al alloys are highly challenging due to the inherent poor printability (e.g., low laser absorption, high oxidation sensitivity and cracking tendency). To further promote the development of LDED high-performance Al alloys, this review gains a deep understanding of the challenges and strategies to improve printability in LDED Al alloys. The porosity, cracking, distortion, inclusions, elements evaporation and resultant inferior mechanical properties (than laser powder bed fusion) are the key challenges in LDED Al alloys. Processing parameter optimizations, in-situ alloy design, reinforcing particle addition and field assistance are the efficient approaches to improve the printability and performance of LDED Al alloys. The underlying correlations between processes, alloy innovation, characteristic microstructures, and achievable performances in LDED Al alloys are discussed. The benchmarking mechanical properties and primary strengthening mechanism of LDED Al alloys are summarized. This review aims to provide a critical and in-depth evaluation of current progress in LDED Al alloys. The future opportunities and perspectives in LDED high-performance Al alloys are also outlooked.

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“…Recent studies have found that nanoparticles can not only nucleate and refine the solidification microstructures of an alloy [35][36][37][38], but also increase the strength and toughness of alloys [39][40][41][42][43]. Nanoparticles have a strong effect of microstructure refinement [44][45][46]. Nanoparticles not only can refine the microstructure and control the growth size and morphology of grains [47][48][49][50][51], but also greatly improve the comprehensive mechanical properties of the alloys, especially, high-temperature strength, high-temperature creep, high-temperature wear resistance, impact toughness and fatigue [52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Wear Resistance on H13 Tool and Die Steels by Trace Nanoparticles

Kou

Dai

Wang

et al. 2022

Metals

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In order to improve the impact toughness and wear resistance of the tool and die steels, this study innovatively prepared strengthened H13 steels with different contents of single-phase TiC and dual-phase TiC + TiB2 through in situ nanoparticle/Al master alloys at room temperature. The microstructure evolution and mechanical properties as well as wear resistance were investigated. Results indicate that the H13 steel with 0.02 wt.% dual-phase TiC + TiB2 nanoparticles has a more uniform and finer microstructure, and the mechanical properties and wear resistance are significantly improved. The yield strength, maximum tensile strength, breaking strain, uniform elongation, product of strength plasticity, and unnotched and U-notched impact toughness of H13 steel with 0.02 wt.% dual-phase TiC + TiB2 are higher than that of H13 steel. In addition, the volume wear rate, maximum scratch depth and width reach 7.1 × 10−11 m3/m, 6050 nm and 90 μm, respectively, which are reduced by 44.5%, 30.1% and 45.5% compared with that of H13 steel. Refining the microstructure and improving impact toughness and wear resistance of H13 tool steel through trace nanoparticles can provide important inspiration for industrial applications.

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Role of trace nanoparticles in establishing fully optimized microstructure configuration of cold-rolled Al alloy

Cited by 64 publications

References 57 publications

Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

Review on laser directed energy deposited aluminum alloys

Enhancement of Wear Resistance on H13 Tool and Die Steels by Trace Nanoparticles

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