Densification behavior of tungsten alloy powders during hot isostatic pressing

Hu, Biao; Cai, Gaoshen; Fu, Jubo; Xin, Yanxi; Zhang, Dongxing; Yuan, Yongfeng; Guo, S.Y.

doi:10.1016/j.mtcomm.2022.103576

Cited by 8 publications

(3 citation statements)

References 24 publications

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“… Experimental materials: ( a ) microstructure of tungsten alloy powder materials [ 19 ]; ( b ) sintered bars. …”

Section: Figurementioning

confidence: 99%

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Effect of Hot Isostatic Pressing Process Parameters on Properties and Fracture Behavior of Tungsten Alloy Powders and Sintered Bars

Cai

2022

Materials

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In order to investigate the effect of hot isostatic pressing (HIP) process parameters on the properties and fracture behavior of tungsten alloy, HIP experiments with different process parameters were carried out, and the relative density, Rockwell hardness, tensile properties, and tensile fracture behavior were analyzed. The results show that after HIP, the tungsten alloy samples obtained further densification, higher relative density and hardness, and lower dispersity. At 1300 °C and 140 MPa, the sintered bar achieved excellent mechanical properties: yield strength increased by 16.5%, tensile strength increased by 16.1%, and fracture strength increased by 85.3%. Comparing the two processes, the mechanical properties of tungsten alloy powders formed directly via HIP were not as good as those of the sintered bars. In addition, after HIP, the fracture mode of the tungsten alloy sintered bar samples was mainly ductile tear, and that of the tungsten alloy powder samples was mainly a full brittle fracture.

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“… Experimental materials: ( a ) microstructure of tungsten alloy powder materials [ 19 ]; ( b ) sintered bars. …”

Section: Figurementioning

confidence: 99%

“… Fracture morphology of tungsten alloy under different HIP parameters: ( a ) sintered bar: 1200 °C, 175 MPa; ( b ) sintered bar: 1200 °C, 140 MPa; ( c ) sintered bar: 1300 °C, 140 MPa; ( d ) powders: 1300 °C, 140 MPa [ 19 ]; ( e ) powders: 1400 °C, 140 MPa [ 19 ]. …”

Section: Figurementioning

confidence: 99%

Effect of Hot Isostatic Pressing Process Parameters on Properties and Fracture Behavior of Tungsten Alloy Powders and Sintered Bars

Cai

2022

Materials

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“…Numerical simulations about movement behavior of Ti6Al4V powder components have been reported by You [18] and Zhou [19], and the predicted configuration agrees well with the measured configuration. Hu [20] have also explored the densification behavior of tungsten alloy powder using numerical simulation during HIP process. However, there are few studies on the optimization of HIP process parameters using the numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and verification of hot isostatic pressing densification process of W-Cu powder

Wang¹,

Wang²,

Wang³

2022

Mater. Res. Express

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Based on finite element method (FEM) and the plasticity theory, a numerical model is built to simulate the hot isostatic pressing (HIP) process of W-Cu powders, and the densification law of the compact in the process is analysed. The cross-experiment method is used to formulate an orthogonal optimization plan for the insulation temperature, the holding pressure and the insulation holding time. The contour map diagram of the relative density in the temperature and pressure plane is established, and the optimal parameter scheme is proposed by simulation results. Experiments are carried out under the best HIP scheme. Comparison of experimental results with simulation results indicates that the numerical model is accurate. The results indicate that the densification process of the compact is from the edge to the centre. The optimal hot isostatic pressing parameter scheme obtained by simulation is 950 °C/110 MPa/2 h, and the overall relative density of the compact can reach more than 96% under this scheme. Under optimal scheme, the maximum error between the simulation results and the test results of the relative density is 1.28%, whereas the average error is about 0.3%.

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Machine learning-powered analysis of hot isostatic pressing for Ti-6Al-4 V powder

Yadav,

Ghazaly,

Askar

et al. 2024

Appl. Phys. A

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Densification behavior of tungsten alloy powders during hot isostatic pressing

Cited by 8 publications

References 24 publications

Effect of Hot Isostatic Pressing Process Parameters on Properties and Fracture Behavior of Tungsten Alloy Powders and Sintered Bars

Effect of Hot Isostatic Pressing Process Parameters on Properties and Fracture Behavior of Tungsten Alloy Powders and Sintered Bars

Numerical simulation and verification of hot isostatic pressing densification process of W-Cu powder

Machine learning-powered analysis of hot isostatic pressing for Ti-6Al-4 V powder

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