scholarly journals Hot isostatic pressing (HIP) to achieve isotropic microstructure and retain as-built strength in an additive manufacturing titanium alloy (Ti-6Al-4V)

2019 ◽  
Vol 257 ◽  
pp. 126690 ◽  
Author(s):  
Jake Benzing ◽  
Nik Hrabe ◽  
Timothy Quinn ◽  
Ryan White ◽  
Ross Rentz ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Additive Manufacturing ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing

Hot Isostatic Pressing of Titanium Alloys for Turbine Engine Components

1973 ◽  
Author(s):  
G. H. Harth
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Powder Processing ◽  
State Of The Art ◽  
Hot Isostatic Pressing ◽  
Turbine Engine ◽  
Isostatic Pressing ◽  
Powder Consolidation ◽  
Powder Type ◽  
Engine Components

This paper presents the state-of-the-art knowledge concerning the application of powder metallurgy to the fabrication of titanium alloy turbine engine components. The effect of powder type, powder processing, and method of powder consolidation on the mechanical properties and microstructures of P/M parts it discussed. The advantages of using hot isostatic pressing (HIP) in producing engine components is outlined.

scholarly journals Structure and Properties of Ti/Ti64 Graded Material Manufactured by Laser Powder Bed Fusion

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6140
Author(s):  
Evgenii Borisov ◽  
Igor Polozov ◽  
Kirill Starikov ◽  
Anatoly Popovich ◽  
Vadim Sufiiarov
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Additive Manufacturing ◽  
Hot Isostatic Pressing ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Isostatic Pressing ◽  
Graded Material ◽  
Single Part

Multimaterial additive manufacturing is an attractive way of producing parts with improved functional properties by combining materials with different properties within a single part. Pure Ti provides a high ductility and an improved corrosion resistance, while the Ti64 alloy has a higher strength. The combination of these alloys within a single part using additive manufacturing can be used to produce advanced multimaterial components. This work explores the multimaterial Laser Powder Bed Fusion (L-PBF) of Ti/Ti64 graded material. The microstructure and mechanical properties of Ti/Ti64-graded samples fabricated by L-PBF with different geometries of the graded zones, as well as different effects of heat treatment and hot isostatic pressing on the microstructure of the bimetallic Ti/Ti64 samples, were investigated. The transition zone microstructure has a distinct character and does not undergo significant changes during heat treatment and hot isostatic pressing. The tensile tests of Ti/Ti64 samples showed that when the Ti64 zones were located along the sample, the ratio of cross-sections has a greater influence on the mechanical properties than their shape and location. The presented results of the investigation of the graded Ti/Ti64 samples allow tailoring properties for the possible applications of multimaterial parts.

scholarly journals Densification modeling of titanium alloy powder during hot isostatic pressing

2011 ◽  
Vol 43 (3) ◽  
pp. 247-260 ◽  
Author(s):  
Y. Xue ◽  
L.H. Lang ◽  
G.L. Bu ◽  
L. Li
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Titanium Alloy ◽  
Relative Density ◽  
Porous Body ◽  
Hot Isostatic Pressing ◽  
Rockwell Hardness ◽  
Isostatic Pressing ◽  
Density Distributions ◽  
Calculation Results

Densification model of titanium alloy (Ti-6Al-4V) are investigated during hot isostatic pressing (Hip). Experimental data was obtained at various pressures and temperatures during hot isostatic pressing (Hip). Experimental data are compared with the finite element calculations by using the hybrid model and Abouaf model, respectively. The results show that the finite element calculation results by the hybrid model are in agreement with the experimental data for densification behaviour of the titanium alloy powder under Hip; however, the finite element calculation results by using the Abouaf model are over the experimental data. In addition, in order to obtaining relative density distributions of porous body, the statistical relationships during Poisson?s ratio, Rockwell hardness and the relative density of porous body were formulated, the results show that the statistical relationship between Poisson?s ratio and the relative density of porous body is essential to construct such a constitutive model; the statistical relationship between Rockwell hardness and the relative density of porous body is essential to obtain relative density distributions of porous body.

Forming and Simulation of Titanium Alloy Ti-6Al-4V by Hot Isostatic Pressing

2013 ◽  
Vol 848 ◽  
pp. 50-54
Author(s):  
Guo Liang Bu ◽  
Li Hui Lang ◽  
Gang Wang ◽  
Yao Song ◽  
Qiu Yu Xu
Keyword(s):  
Numerical Simulation ◽  
Titanium Alloy ◽  
Alloy Powder ◽  
Hot Isostatic Pressing ◽  
Complex Model ◽  
Uniaxial Compression Test ◽  
Isostatic Pressing ◽  
Material Parameters ◽  
Ring Sample ◽  
Good Agreement

Numerical simulation of titanium alloy powder during hot isostatic pressing (HIP) with Shima model is studied in this paper. Material parameters in this model were determined based on uniaxial compression test with different relative density specimens. A titanium alloy ring sample was designed and formed by hot isostatic pressing. The sample was analyzed by using Shima model in the platform of MSC.Marc with the determined parameters of titanium alloy (Ti-6Al-4V). The results of simulation with Shima model were in a good agreement with that result of experiment. Finally, the model is successfully applied to complex model of impeller to predict the deformation during HIP.

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