Effect of heat treatment on the microstructure and properties of CuCrZr alloy manufactured by wire arc additive manufacturing

Diao, Zhaowei; Yang, Fei; Wang, Rui; Zhang, Yang; Li, Chang-Jiu; Xiong, Tao; Wei, Yang; Rong, Mingzhe

doi:10.1016/j.jallcom.2023.171786

Cited by 12 publications

(3 citation statements)

References 41 publications

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“…Meanwhile, appropriate distribution of Cr phases can also alleviate stress concentration, reduce stress corrosion cracking, and prevent rapid aging and failure of the alloy under high temperature and high-pressure environments. [18,36,37]…”

Section: Precipitation Characteristics Of Slm Cucrzr Alloymentioning

confidence: 99%

The Influence of Heat Treatment on Microstructure and Properties of Selective Laser Melting CuCrZr Alloy

Wang,

Song,

Wang

et al. 2024

Adv Eng Mater

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The effects of different heat treatment processes on the properties of SLM CuCrZr alloy were investigated to enhance its overall performance. Solution treatment (ST) resulted in recrystallized grains, leading to an increase in electrical conductivity to 45.36% IACS and a decrease in tensile strength to 221.8 MPa compared to SLM CuCrZr alloys. Subsequent aging treatment (SAT) further improved the conductivity to 83.12% IACS and the tensile strength to 335.6 MPa. The optimal combination of electrical conductivity (72.82% IACS) and tensile strength (611.3 MPa) was achieved through direct aging treatment (DAH) at 480∘C for 2 hours. With increasing aging temperature and time, the electrical conductivity initially increased rapidly and then plateaued, while the tensile strength exhibited an initial increase followed by a decrease. The proportion of precipitated phase gradually increased with longer aging time. Coherent precipitation occurred between the phase and the matrix at 480∘C for 120 minutes, while at 480∘C for 360 minutes, both face‐centered cubic and body‐centered cubic precipitates coexisted with an incoherent relationship with the matrix. Overall, direct aging treatment proves effective in enhancing the properties of SLM CuCrZr alloy, with precipitation strengthening serving as the primary mechanism for improving its performance.This article is protected by copyright. All rights reserved.

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Section: Precipitation Characteristics Of Slm Cucrzr Alloymentioning

confidence: 99%

The Influence of Heat Treatment on Microstructure and Properties of Selective Laser Melting CuCrZr Alloy

Wang,

Song,

Wang

et al. 2024

Adv Eng Mater

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“…A range of studies have been conducted to understand the influence of welding process parameters on mechanical properties, and thus the structural reliability of welded parts [13][14][15][16][17][18][19][20]. Ferro et al [21] conducted FE simulations to examine the influence of different heat source models on thermal profiles in welding.…”

Section: Introductionmentioning

confidence: 99%

Multiphysics Study of Thermal Profiles and Residual Stress in Welding

Han

2024

Materials

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One of the effects of welding is residual stress. Welding involves complex tests concerning differences in values of the mechanical parameters of its regions as an effect of residual stress. Such multiphysics characteristics of welding pose a challenge in predicting residual stress. In the present study, a thermo-mechanical constitutive model considering phase transformation and transformation plasticity is implemented in the numerical model in ABAQUS user subroutines. In order to consider phase evolution in welding, the metallurgical parameters for Leblond’s phase equation were obtained from the calibration of DH36 steel with a CCT diagram. In addition, the effects of welding speed on thermal profiles and residual stress generation were investigated. Analysis has suggested that the width of the heat-affected zone (HAZ) decreases with an increase in welding speed, and the phase fraction is significantly affected by this kind of parameter. Such phase transformation has led to the generation of a compressive stress in the fusion zone (FZ) and HAZ. The volume difference between coexisting phases produces a compressive stress in cooling, and its magnitude was increased with martensite increasing.

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“…The AM process parameters, such as the scan speed and pattern, play crucial roles in the thermal history of the AM part and induce microstructural changes [6][7][8]. These microstructural features can significantly affect the material's properties and eventually the performance of the additive manufactured parts, including residual stress [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Wire Arc Additive Manufacturing: A Study of Process Parameters Using Multiphysics Simulations

Han

2023

Materials

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In this work, analyses focus on understanding the effects of the scanning pattern and speed on the thermal profile, phase transformation, and residual stress generation in the WAAM deposition. An FE numerical model is constructed that takes into account the phase evolution and transformation plasticity using the ABAQUS user subroutine, UMAT. The results show that the scanning pattern significantly affects the heat accumulation and the cooling rate during the AM deposition, and, eventually, the generation of residual stresses. According to the simulation results, the highest residual stress is generated in the case of the out–in scanning, while the alternate pattern leads to the lowest residual stress. The influence of the scanning speed on the thermal profiles and residual stress are also examined. The analyses show that an increase in the scan speed leads to a decrease in the peak temperature and an increase in the cooling rate, which result in an increase in the martensite volume fraction of the deposition.

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Effect of heat treatment on the microstructure and properties of CuCrZr alloy manufactured by wire arc additive manufacturing

Cited by 12 publications

References 41 publications

The Influence of Heat Treatment on Microstructure and Properties of Selective Laser Melting CuCrZr Alloy

The Influence of Heat Treatment on Microstructure and Properties of Selective Laser Melting CuCrZr Alloy

Multiphysics Study of Thermal Profiles and Residual Stress in Welding

Wire Arc Additive Manufacturing: A Study of Process Parameters Using Multiphysics Simulations

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