Preparation and mechanical properties of powder metallurgy Ti–6Al–4V alloy produced by hot isostatic pressing

2015 ◽  
Vol 19 (sup9) ◽  
pp. S9-17-S9-19 ◽  
Author(s):  
R. P. Guo ◽  
L. Xu ◽  
J. Wu ◽  
R. Yang
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing

Fabrication and mechanical properties of powder metallurgy tantalum prepared by hot isostatic pressing

2015 ◽  
Vol 48 ◽  
pp. 211-216 ◽  
Author(s):  
Youngmoo Kim ◽  
Eun-Pyo Kim ◽  
Joon-Woong Noh ◽  
Sung Ho Lee ◽  
Young-Sam Kwon ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing

Effects of Porosity and Re-HIP on Properties of Ti-6Al-4V Alloy from Atomized Powder

2014 ◽  
Vol 552 ◽  
pp. 274-277 ◽  
Author(s):  
Rui Peng Guo ◽  
Lei Xu ◽  
Jia Feng Lei ◽  
Rui Yang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Powder Metallurgy ◽  
Relative Density ◽  
Hot Isostatic Pressing ◽  
Effective Technique ◽  
Isostatic Pressing ◽  
Porosity Defects

Ti-6Al-4V alloys of various densities were prepared by powder metallurgy (PM) using hot isostatic pressing (HIPing). The effects of porosity on mechanical properties of PM compacts have been investigated. It indicated that PM Ti-6Al-4V alloy exhibited a better performance by increase of relative density, especially for the tensile strength at 400 oC. Re-HIPing was used to assess the possibility for increasing the relative density of PM compacts with porosity defects in the first HIPing cycles. The results show that re-HIPing is an effective technique to heal porosity defects. The relative density of PM compacts with porosity can be significantly improved by re-HIPing.

scholarly journals Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1027
Author(s):  
Joan Lario ◽  
Ángel Vicente ◽  
Vicente Amigó
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Strength ◽  
Room Temperature ◽  
Hot Isostatic Pressing ◽  
Phase Changes ◽  
Post Processing ◽  
Isostatic Pressing ◽  
Porosity Reduction ◽  
Processing Step ◽  
Hip Process

The HIP post-processing step is required for developing next generation of advanced powder metallurgy titanium alloys for orthopedic and dental applications. The influence of the hot isostatic pressing (HIP) post-processing step on structural and phase changes, porosity healing, and mechanical strength in a powder metallurgy Ti35Nb2Sn alloy was studied. Powders were pressed at room temperature at 750 MPa, and then sintered at 1350 °C in a vacuum for 3 h. The standard HIP process at 1200 °C and 150 MPa for 3 h was performed to study its effect on a Ti35Nb2Sn powder metallurgy alloy. The influence of the HIP process and cold rate on the density, microstructure, quantity of interstitial elements, mechanical strength, and Young’s modulus was investigated. HIP post-processing for 2 h at 1200 °C and 150 MPa led to greater porosity reduction and a marked retention of the β phase at room temperature. The slow cooling rate during the HIP process affected phase stability, with a large amount of α”-phase precipitate, which decreased the titanium alloy’s yield strength.

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