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

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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Development of Microstructure and Mechanical Properties of a Ni-Base Single-Crystal Superalloy by Hot-Isostatic Pressing

CrossRef Listing of Deleted DOIs ◽

10.1361/105994903770342953 ◽

2003 ◽

Vol 12 (4) ◽

pp. 420-425 ◽

Cited By ~ 14

Author(s):

Jung-Chel Chang ◽

Young-Hoon Yun ◽

Cheoi Choi ◽

Jae-Chul Kim

Keyword(s):

Mechanical Properties ◽

Single Crystal ◽

Hot Isostatic Pressing ◽

Single Crystal Superalloy ◽

Isostatic Pressing ◽

Microstructure And Mechanical Properties

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Optimization of the homogenization and hot isostatic pressing heat treatments of a fourth generation single crystal superalloy

MATEC Web of Conferences ◽

10.1051/matecconf/20141413002 ◽

2014 ◽

Vol 14 ◽

pp. 13002 ◽

Cited By ~ 3

Author(s):

Pierre Caron ◽

Catherine Ramusat

Keyword(s):

Single Crystal ◽

Hot Isostatic Pressing ◽

Heat Treatments ◽

Single Crystal Superalloy ◽

Fourth Generation ◽

Isostatic Pressing

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The Effect of the Cooling Rates on the Microstructure and High-Temperature Mechanical Properties of a Nickel-Based Single Crystal Superalloy

Materials ◽

10.3390/ma13194256 ◽

2020 ◽

Vol 13 (19) ◽

pp. 4256

Author(s):

Xiao-Yan Wang ◽

Meng Li ◽

Zhi-Xun Wen

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Single Crystal ◽

Solution Treatment ◽

Single Crystal Superalloy ◽

Air Cooling ◽

Strengthening Effect ◽

Cooling Rates ◽

High Temperature Mechanical Properties ◽

High Temperature Tensile

The as-cast alloy of nickel-based single-crystal superalloy was used as the research object. After four hours of solution treatment at 1315 °C, four cooling rates (water cooling (WC), air cooling (AC) and furnace cooling (FC1/FC2)) were used to reduce the alloy to room temperature. Four different microstructures of nickel-based superalloy material were prepared. A high-temperature tensile test at 980 °C was carried out to study the influence of various rates on the formation of the material’s microstructure and to further obtain the influence of different microstructures on the high-temperature mechanical properties of the materials. The results show that an increase of cooling rate resulted in a larger γ′ phase nucleation rate, formation of a smaller γ′ phase and a greater number. When air cooling was used, the uniformity of the γ′ phase and the coherence relationship between the γ′ phase and the γ phase were the best. At the same time, the test alloy had the best high-temperature tensile properties, and the material showed a certain degree of plasticity. TEM test results showed that the test alloy mainly blocked dislocations from traveling in the material through the strengthening effect of γ′, and that AC had the strongest hindering effect on γ′ dislocation movement.

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