Investigation of tensile deformation mechanisms at room temperature in a new Ni-based single crystal superalloy

2016 ◽  
Vol 96 (6) ◽  
pp. 238-245 ◽  
Author(s):  
Peng Zhang ◽  
Yong Yuan ◽  
Bo Li ◽  
Gongxian Yang ◽  
Xiaolong Song
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Tensile Deformation ◽  
Single Crystal Superalloy ◽  
Deformation Mechanisms

Plastic deformation mechanisms in a new Ni-base single crystal superalloy at room temperature

2017 ◽  
Vol 268 (2) ◽  
pp. 186-192 ◽  
Author(s):  
P. ZHANG ◽  
Y. YUAN ◽  
Z. GAO ◽  
B. LI ◽  
G. YANG ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Single Crystal ◽  
Room Temperature ◽  
Single Crystal Superalloy ◽  
Deformation Mechanisms

Influences of the γ′ Phase on the Mechanical Properties of a Nickel-Based Single Crystal Superalloy

2021 ◽  
Vol 1023 ◽  
pp. 45-52
Author(s):  
Xiao Yan Wang ◽  
Meng Li ◽  
Zhi Xun Wen
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Single Crystal ◽  
Tensile Properties ◽  
Room Temperature ◽  
Solution Treatment ◽  
Single Crystal Superalloy ◽  
Original Material ◽  
Solid Solution Treatment ◽  
The Matrix

After solid solution treatment at 1335°C for 4 hours and cooling to room temperature at different rate, the nickel-based single crystal superalloy were made into three kinds of nickel-based single crystal superalloy materials containing different size γ′ phases, respectively. The tensile test of I-shaped specimens was carried out at 980°C, and their effect of γ′ phase microstructure on the tensile properties was studied. The results show that the yielding strength of the material air-cooled to room temperature was lower than that with cooling rate at 0.15°C/s, but both of them were lower than the yielding strength of original material. Little difference was found on the elastic modulus of I-shaped specimens made of three kinds of materials. When the cubic degree of the γ′ phase is higher and the size is larger, the tensile properties of the material is better, which can be attributed to the larger size and narrower channel of the matrix phase that lead to higher dislocation resistance.

Tensile Properties of a Low-Cost First Generation Single Crystal Superalloy DD16

2013 ◽  
Vol 747-748 ◽  
pp. 478-482 ◽  
Author(s):  
Jian Wei Xu ◽  
Yun Song Zhao ◽  
Ding Zhong Tang
Keyword(s):  
Tensile Strength ◽  
Yield Strength ◽  
Single Crystal ◽  
Tensile Properties ◽  
Cleavage Fracture ◽  
Room Temperature ◽  
First Generation ◽  
Low Cost ◽  
Single Crystal Superalloy ◽  
Fracture Characteristics

The tensile properties of a low-cost first generation single crystal superalloy DD16 have been investigated. The results show that values of the tensile strength and yield strength of DD16 alloy were similar at typical temperatures; from room temperature to 760, the yield strength of DD16 alloy increases; However, above 760, the yield strength of DD16 alloy decreases remarkably, and the maximum of the yield strength was 1145.5MPa at 760. From room temperature to 760, the fracture mode was cleavage fracture; But above 760, the fracture characteristics changed from cleavage to dimple.

Effect of Temperature on Formation of Borides in TLP Joint of a Kind of Nickel-Base Single Crystal Superalloy

2007 ◽  
Vol 546-549 ◽  
pp. 1245-1248 ◽  
Author(s):  
J.D. Liu ◽  
Tao Jin ◽  
N.R. Zhao ◽  
Z.H. Wang ◽  
Xiao Feng Sun ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Single Crystal ◽  
Base Metal ◽  
Room Temperature ◽  
Bonding Temperature ◽  
Single Crystal Superalloy ◽  
Effect Of Temperature ◽  
Transmission Electron ◽  
Different Temperatures ◽  
Nickel Base

a kind of as-cast nickel-base single crystal superalloy was TLP bonded using Ni-Cr-B amorphous foil at different temperatures. Special attention is paid to the formation of boride in diffusion zone of TLP joints at different conditions. The chemical composition and microstructure of borides were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). At different bonding temperature, M3B2 precipitates appear distinct morphologies. At 1200°C, both blocky and plate-like borides formed owing to the diffusion of boron atoms into base metal and precipitation during the cooling process. At 1230°C or above, due to the diffusion of boron atoms the constitutional liquation of original γ/γ′ eutectics in the base metal occurs and borides formed when the system was cooled to room temperature. The analysis of TEM results reveals that M3B2 has a tetragonal structure and is rich in Mo, W, and Cr elements.

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