Effect of hot isostatic pressing on the cast Ti6Al4V alloy with shrinkage cavities inside: Healing behavior, microstructure evolution and tensile property

2021 ◽  
pp. 142496
Author(s):  
Qian Xu ◽  
Wen Li ◽  
Yajun Yin ◽  
Jianxin Zhou ◽  
Hai Nan
Keyword(s):  
Tensile Property ◽  
Microstructure Evolution ◽  
Hot Isostatic Pressing ◽  
Ti6al4v Alloy ◽  
Isostatic Pressing ◽  
Shrinkage Cavities

Hot Working of Ti Aluminide Made through Reaction Synthesis

2012 ◽  
Vol 710 ◽  
pp. 137-142
Author(s):  
Rohit Kumar Gupta ◽  
Bhanu Pant ◽  
Vijaya Agarwala ◽  
Parameshwar Prasad Sinha
Keyword(s):  
Microstructure Evolution ◽  
Titanium Aluminide ◽  
Hot Isostatic Pressing ◽  
Hot Working ◽  
Reaction Synthesis ◽  
Refined Grains ◽  
Isostatic Pressing ◽  
Die Forging ◽  
Open Die Forging

Hot working of titanium aluminide made through reaction synthesis (RS) has been studied. Hot isostatic pressing under argon, isothermal pressing under vacuum, open die forging and pack forging was carried out. Hot worked billet samples were characterized for density and microstructure evolution. Presence of refined grains and dynamically recrystallized grains were observed. In case of open die forging, presence of twins was also found. From the present study, near isothermal working through near conventional processes has been confirmed. However, role of isothermal working in obtaining crack free sound deformed product has also been noted.

Hot deformation behavior of the Ti6Al4V alloy prepared by powder hot isostatic pressing

2017 ◽  
Vol 721 ◽  
pp. 320-332 ◽  
Author(s):  
Min Wang ◽  
Jianxin Zhou ◽  
Yajun Yin ◽  
Hai Nan ◽  
Pengju Xue ◽  
...  
Keyword(s):  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Isostatic Pressing ◽  
Ti6al4v Alloy ◽  
Hot Deformation Behavior ◽  
Isostatic Pressing

scholarly journals Effects of hot isostatic pressing temperature on casting shrinkage densification and microstructure of Ti6Al4V alloy

China Foundry ◽  
2017 ◽  
Vol 14 (5) ◽  
pp. 429-434 ◽  
Author(s):  
Qian Xu ◽  
Jian-xin Zhou ◽  
Hai Nan ◽  
Ya-jun Yin ◽  
Min Wang ◽  
...  
Keyword(s):  
Hot Isostatic Pressing ◽  
Ti6al4v Alloy ◽  
Pressing Temperature ◽  
Isostatic Pressing

scholarly journals Fabrication of Highly Transparent Y2O3 Ceramics with CaO as Sintering Aid

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 444
Author(s):  
Danlei Yin ◽  
Jun Wang ◽  
Meng Ni ◽  
Peng Liu ◽  
Zhili Dong ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Microstructure Evolution ◽  
Hot Isostatic Pressing ◽  
Optical Transmittance ◽  
Densification Rate ◽  
Vacuum Sintering ◽  
Sintering Aid ◽  
Isostatic Pressing

Highly transparent Y2O3 ceramics were successfully fabricated with CaO as sintering aid. The microstructure evolution, optical transmittance, hardness and thermal conductivity of the Y2O3 ceramics were investigated. It was found that doping a small amount (0.01–0.15 wt.%) of CaO could greatly improve the densification rate of Y2O3. With an optimized CaO dosage of 0.02 wt.% combined with the low temperature vacuum sintering plus hot isostatic pressing (HIP-ing), Y2O3 ceramics with in-line transmittance of 84.87% at 1200 nm and 81.4% at 600 nm were obtained.

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