Effects of Thermally Assisted Warm Laser Shock Processing on the Microstructure and Fatigue Property of IN718 Superalloy

2021 ◽  
Author(s):  
Yang Liu ◽  
Lei Wang ◽  
Kaiyue Yang ◽  
Xiu Song
Keyword(s):  
Fatigue Property ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
In718 Superalloy ◽  
Shock Processing

Laser shock processing for improving fatigue property of K403 cast superalloy

2014 ◽  
Vol 26 (10) ◽  
pp. 109001
Author(s):  
汪诚 Wang Cheng ◽  
薛彦庆 Xue Yanqing ◽  
柴艳 Chai Yan ◽  
安航 An Hang ◽  
赖志林 Lai Zhilin ◽  
...  
Keyword(s):  
Fatigue Property ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing ◽  
Cast Superalloy

On Laser Shock Processing to Improve Hot Corrosion Resistance of In718 Superalloy

2014 ◽  
Vol 989-994 ◽  
pp. 27-30
Author(s):  
Yu Chuan Bai ◽  
Yin Qun Hua ◽  
Zhen Rong ◽  
Qing Xue ◽  
Rui Fang Chen
Keyword(s):  
Residual Stress ◽  
Corrosion Resistance ◽  
Hot Corrosion ◽  
Corrosion Test ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Stress Surface ◽  
In718 Superalloy ◽  
Average Corrosion Rate ◽  
Shock Processing

The aim of this research is to improve the hot corrosion resistance of In718 superalloy by laser shock processing. Specimens were treated by laser shock processing on the whole surface. The hot corrosion resistance beneath molten Na2SO4 under 900 °C was investigated. The effects of laser shock processing impacts on residual stress, surface microstructure and microstructure after hot corrosion test were investigated. Results show that 3 times laser shock processing can induce-400 MPa compressive residual stress. The microstructure was characterized by highly tangled and dense dislocations and a large number of twins. The average corrosion rate of In718 superalloy treated by laser shock processing is about 50 % lower than that of the untreated superalloy.

Effects of different shocked paths on fatigue property of 7050-T7451 aluminum alloy during two-sided laser shock processing

2011 ◽  
Vol 32 (2) ◽  
pp. 480-486 ◽  
Author(s):  
L. Zhang ◽  
J.Z. Lu ◽  
Y.K. Zhang ◽  
K.Y. Luo ◽  
J.W. Zhong ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Property ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Effect of Laser Shock Processing on the Fatigue Property of K4030 Alloy Blade

2014 ◽  
Vol 51 (1) ◽  
pp. 011405 ◽  
Author(s):  
柴艳 Chai Yan ◽  
任军 Ren Jun ◽  
何卫锋 He Weifeng ◽  
何光宇 He Guangyu ◽  
李玉琴 Li Yuqin
Keyword(s):  
Fatigue Property ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Laser shock processing with 20 MW laser pulses delivered by optical fibers

2000 ◽  
Vol 9 (3) ◽  
pp. 235-238 ◽  
Author(s):  
T. Schmidt-Uhlig ◽  
P. Karlitschek ◽  
M. Yoda ◽  
Y. Sano ◽  
G. Marowsky
Keyword(s):  
Optical Fibers ◽  
Laser Pulses ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Laser Shock Processing of Ni-Base Superalloy and High Cycle Fatigue Properties

2011 ◽  
Vol 697-698 ◽  
pp. 235-238 ◽  
Author(s):  
L. Zhou ◽  
Y.H. Li ◽  
W.F. He ◽  
X.D. Wang ◽  
Q.P. Li
Keyword(s):  
High Cycle Fatigue ◽  
Laser Pulses ◽  
Fatigue Properties ◽  
Treatment Technique ◽  
Cycle Fatigue ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
First Order ◽  
Shock Processing ◽  
Base Superalloy

A plasma sound wave detection method of laser shock processing (LSP) technology is proposed. Speciments of Ni-base superalloy are used in this paper. A convergent lens is used to deliver 1.2 J, 10 ns laser pulses by a Q-switch Nd:YAG laser, operating at 1 Hz. The influence of the laser density to the shock wave is investigated in detail for two different wavelength lasers. Constant amplitude fatigue data are generated in room environment using notch specimens tested at an amplitude of vibration 2.8 mm and first-order flextensional mode. The results show that LSP is an effective surface treatment technique for improving the high cycle fatigue performance of Ni-base superalloys having a factor of 1.62 improvement in fatigue life.

Sign in / Sign up

Export Citation Format

Share Document