High temperature physical and mechanical properties of large-scale Ti2AlC bulk synthesized by self-propagating high temperature combustion synthesis with pseudo hot isostatic pressing

2013 ◽  
Vol 33 (13-14) ◽  
pp. 2435-2445 ◽  
Author(s):  
Yuelei Bai ◽  
Xiaodong He ◽  
Rongguo Wang ◽  
Yue Sun ◽  
Chuncheng Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Combustion Synthesis ◽  
Large Scale ◽  
Hot Isostatic Pressing ◽  
Physical And Mechanical Properties ◽  
Isostatic Pressing ◽  
Temperature Combustion ◽  
High Temperature Combustion

Rapid synthesis of bulk Ti2AlC by self-propagating high temperature combustion synthesis with a pseudo–hot isostatic pressing process

2009 ◽  
Vol 24 (8) ◽  
pp. 2528-2535 ◽  
Author(s):  
Yuelei Bai ◽  
Xiaodong He ◽  
Yibin Li ◽  
Chuncheng Zhu ◽  
Sam Zhang
Keyword(s):  
High Temperature ◽  
Combustion Synthesis ◽  
Hot Isostatic Pressing ◽  
X Ray Diffraction ◽  
Phase Purity ◽  
X Ray ◽  
Isostatic Pressing ◽  
Pressing Process ◽  
Temperature Combustion ◽  
High Temperature Combustion

In this study, the dense polycrystalline Ti2AlC was synthesized by self-propagating high-temperature combustion synthesis with the pseudo–hot isostatic pressing process (SHS/PHIP). The resultant phase purity is highly dependent on the mol ratio of raw powders. The Ti2AlC was densified by applying pressure after the SHS reaction. The resultant sample mainly contains typical plate-like nonstoichiometric Ti2AlCx (x = 0.69) with grain size of ∼6 µm. The sample shows the Vickers hardness of 5.5 GPa, highest flexural strength of 431 MPa, compressive strength of 1033 MPa, and fracture toughness of 6.5 MPa·m1/2. No indentation cracks in Ti2AlCx were observed, indicative of a damage material nature. The reaction mechanism for the formation of SHS/PHIP-derived Ti2AlC is also discussed based on differential thermal analysis and x-ray diffraction results.

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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