High temperature mechanical properties of a submicrocrystalline Ti–47Al–3Cr alloy produced by mechanical alloying and hot isostatic pressing

2000 ◽  
Vol 313 (1-2) ◽  
pp. 201-208 ◽  
Author(s):  
M.R. Shagiev ◽  
O.N. Senkov ◽  
G.A. Salishchev ◽  
F.H. Froes
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Mechanical Alloying ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing ◽  
High Temperature Mechanical Properties

TEM Studies of Grain Boundary Films in Si3N4 Ceramics

1991 ◽  
Vol 49 ◽  
pp. 930-931
Author(s):  
H.-J. Kleebe ◽  
J.S. Vetrano ◽  
J. Bruley ◽  
M. Rühle
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Hot Isostatic Pressing ◽  
Amorphous Film ◽  
Liquid Phase Sintering ◽  
Second Phase ◽  
High Temperature Mechanical Properties ◽  
Triple Points ◽  
Boundary Films

It is expected that silicon nitride based ceramics will be used as high-temperature structural components. Though much progress has been made in both processing techniques and microstructural control, the mechanical properties required have not yet been achieved. It is thought that the high-temperature mechanical properties of Si3N4 are limited largely by the secondary glassy phases present at triple points. These are due to various oxide additives used to promote liquid-phase sintering. Therefore, many attempts have been performed to crystallize these second phase glassy pockets in order to improve high temperature properties. In addition to the glassy or crystallized second phases at triple points a thin amorphous film exists at two-grain junctions. This thin film is found even in silicon nitride formed by hot isostatic pressing (HIPing) without additives. It has been proposed by Clarke that an amorphous film can exist at two-grain junctions with an equilibrium thickness.

scholarly journals HIGH TEMPERATURE MECHANICAL PROPERTIES OF Al-Al4C3 COMPOSITE PRODUCED BY MECHANICAL ALLOYING

2014 ◽  
Vol 20 (3) ◽  
Author(s):  
Michal Besterci ◽  
Ferdinand Dobes ◽  
Tibor Kvackaj ◽  
Katarina Sulleiova ◽  
Beata Ballokova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Mechanical Alloying ◽  
High Temperature Mechanical Properties

scholarly journals Application research progress of hot isostatic pressing technology in nickel-based single crystal superalloy

2020 ◽  
Vol 155 ◽  
pp. 01012
Author(s):  
Jun Wang ◽  
Zhaojun Jiang
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Single Crystal ◽  
Hot Isostatic Pressing ◽  
Single Crystal Superalloy ◽  
Research Progress ◽  
Application Research ◽  
Isostatic Pressing ◽  
Increasing Demand ◽  
Pressing Technology

Since the introduction of hot isostatic pressing (HIP) technology, it has been widely used in powder metallurgy forming and improving the densification of castings. With the increasing demand for the performance of nickel-based single crystal superalloy, more and more scholars started research on the application of hot isostatic pressing in nickel-based single crystal superalloy. This article summarizes the current research progress in the application of hot isostatic pressing to the high temperature of nickel-based single crystals, explains the elimination effect of hot isostatic pressing on porosity and other pore defects in nickel-based single crystal superalloy, analyzes the pore healing mechanism, and the changes in mechanical properties such as tensile, endurance, and fatigue of the alloy after applying hot isostatic pressing are shown. Finally, the future development of China’s hot isostatic pressing technology is prospected.

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