Effects of microelements on the microstructure evolution and properties of ultrahigh strength Cu–Ti alloys

Huang, Lan; Cui, Zhenshan; Meng, Xiangpeng; Zhang, Xianwei; Zhang, Xiaoyan; Song, Xiping; Tang, N. Y.; Zhu, Xiaobing; Lei, Qian

doi:10.1016/j.msea.2021.141581

Cited by 39 publications

(3 citation statements)

References 44 publications

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“…Figure 9 shows that the critical condition has a linear relationship with the lnZ under different hot deformation conditions, and the expressions are shown in Equation ( 13) and ( 14) ln ε c ¼ À16.2693 þ 0.31817 lnZ (13) ln σ c ¼ À4.0096 þ 0.2009 lnZ (14)…”

Section: Critical Stress-strain Conditionmentioning

confidence: 99%

“…[ 12 ] Huang et al systematically manufactured and studied high‐strength and high‐ductility Cu‐Ti‐Cr alloys, and found that increasing Ti and Cr contents can improve the strength and plasticity of the samples, where precipitation strengthening is the main strengthening mechanism. [ 13 ] Liu et al studied the microstructure of discontinuous precipitates during the aging process of Cu‐Ti‐Fe alloy and found the strengthening and refining of Laves C 14 , as well as the effect of inhibiting discontinuous precipitation. [ 14 ] Xie et al investigated the dynamic recrystallization (DRX) nucleation process at grain junctions of GH4720Li superalloy, it is found that DRX nucleation priorities of the same kind of grain junctions strongly depended on the orientation of the component grains.…”

Section: Introductionmentioning

confidence: 99%

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Study on Hot Deformation Behavior and Dynamic Recrystallization Mechanism of Cu‐Ti‐Fe Alloy

Wang,

Ren,

Wang

et al. 2023

Adv Eng Mater

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Hot compression experiments with the deformation temperatures of 750‐950 °C and the strain rates of 0.01‐10 s‐1 were carried out on a Gleeble‐3500 thermal‐mechanical simulator. The flow behavior and dynamic recrystallization (DRX) mechanism of the Cu‐Ti‐Fe alloy were systematically studied under different hot deformation conditions. According to the curves of flow stress and work hardening rate, the DRX critical condition of the alloy is obtained, and the critical stress value of DRX is small under high‐temperature and low‐strain rate. After fitting, the logarithmic values of the critical stress and critical strain have a linear relationship with lnZ, which indicates that the alloy is more prone to DRX at high temperatures and low strain rates. The Arrhenius constitutive model of the alloy was established, the linear correlation coefficient (R2) was 0.984. Combined with the microstructure of Cu‐Ti‐Fe alloy, the microstructure evolution characteristics and DRX mechanism were elucidated. The dominant mechanism of the alloy under the deformation temperature of 750–950 °C is the DRX mechanism. The LAGBs transform into HAGBs and continuous dynamic recrystallization (CDRX) grains form. Abundant dislocations gather near the HAGBs, causing grain boundaries to protrude. High‐temperature conditions make the dislocations disappear, forming discontinuous dynamic recrystallization (DDRX) grains.This article is protected by copyright. All rights reserved.

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Section: Critical Stress-strain Conditionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Hot Deformation Behavior and Dynamic Recrystallization Mechanism of Cu‐Ti‐Fe Alloy

Wang,

Ren,

Wang

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…it is difficult to simultaneously achieve high strength and good electrical conductivity for Cu-ti alloy. hence, it poses a challenge for material researchers to improve its electrical conductivity while its excellent mechanical properties can be still maintained [16]. thus far, a number of investigations shows that it is an effective measure to incorporate trace alloying elements in the Cu-ti alloy, such as Fe [17], Cr [18], Co [14,19], Cd [20], Sn [21], al [22], P [23], which can reduce the ti solid solution in the Cu matrix and form the intermetallic compounds, thereby reducing electron scattering and improving the electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Study on Phase Transformation Dynamics, Microstructure, and Properties of the Cu-2.7Ti-2.5Ni-0.8V Alloy

Liu,

Wang

2023

Archives of Metallurgy and Materials

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Study on PhaSe tranSformation dynamicS, microStructure, and ProPertieS of the cu-2.7ti-2.5ni-0.8V alloy the phase transformation dynamic and electrical conductivity equations of the aged Cu-2.7ti-2.5ni-0.8V alloy were established in this work. the microstructure evolution and precipitated phases were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (tEM). the mechanical properties were tested using a hardness testing machine and universal test machine, and the electrical conductivity was measured by the eddy conductivity gauge. the results show that niti intermetallic compounds are formed during the solidification, and these phases such as ni 3 ti and niV 3 are precipitated after aging treatment. the fracture morphology displays that a large number of shallow and equiaxed dimples occur on the tensile fracture, indicating a typical ductile fracture. after aging treatment at 450°C for 240 min, the hardness, tensile strength, elongation and electrical conductivity of the Cu-2.7ti-2.5ni-0.8V alloy are 184 hV, 459 MPa, 6.3% and 28.72% iaCS, respectively.

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Effect of vanadium element on the continuous precipitation behavior of Cu–3.2Ti–0.2Fe alloys

et al. 2023

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Effects of microelements on the microstructure evolution and properties of ultrahigh strength Cu–Ti alloys

Cited by 39 publications

References 44 publications

Study on Hot Deformation Behavior and Dynamic Recrystallization Mechanism of Cu‐Ti‐Fe Alloy

Study on Hot Deformation Behavior and Dynamic Recrystallization Mechanism of Cu‐Ti‐Fe Alloy

Study on Phase Transformation Dynamics, Microstructure, and Properties of the Cu-2.7Ti-2.5Ni-0.8V Alloy

Effect of vanadium element on the continuous precipitation behavior of Cu–3.2Ti–0.2Fe alloys

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