scholarly journals Thermal stability study of TC11 titanium alloy thin component after surface nanocrystallization induced by laser shock processing

AIP Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 015211
Author(s):  
Xiangfan Nie ◽  
Yuyuan Tang ◽  
Feifan Zhao ◽  
Sihai Luo ◽  
Weifeng He ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Titanium Alloy ◽  
Stability Study ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Surface Nanocrystallization ◽  
Tc11 Titanium Alloy ◽  
Shock Processing ◽  
Thermal Stability Study

Hot corrosion behavior of TC11 titanium alloy treated by laser shock processing

2013 ◽  
Vol 283 ◽  
pp. 775-780 ◽  
Author(s):  
Yinqun Hua ◽  
Yuchuan Bai ◽  
Yunxia Ye ◽  
Qing Xue ◽  
Haixia Liu ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Tc11 Titanium Alloy ◽  
Shock Processing

Laser Shock Processing of Titanium Alloy Blade and FEM Simulation

2013 ◽  
Vol 456 ◽  
pp. 125-128
Author(s):  
Bing Yan ◽  
Rui Wang
Keyword(s):  
Residual Stress ◽  
Titanium Alloy ◽  
Residual Stresses ◽  
Fem Simulation ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Tc4 Titanium Alloy ◽  
Compressive Stresses ◽  
Maximum Value ◽  
Shock Processing

The aim of this article is to analyze the residual stresses field in a TC4 titanium alloy blade by laser shock processing (LSP).LSP is a new surface processing technology, it uses the laser shock wave to act on the surface of the target and form residual compressive stresses field. The ABAQUS software is applied to simulate the LSP of TC4 titanium alloy blade, and the distributions of the residual stresses field are analysed.After single LSP,the maximum value of residual stress on the surface is 309 MPa.The residual stresses on the surface increase first and then decrease.The residual stresses at the depth continue decreasing with the increase of the depth.After multiple LSP,the maximum value of residual stress on the surface is increased and plastically affected depth is increased.

Thermostablity Study on Microstructure and Microhardness of Laser Shock Processed Ti-6Al-2.5Mo-1.5Cr-0.5Fe-0.3Si

2011 ◽  
Vol 697-698 ◽  
pp. 440-444 ◽  
Author(s):  
Qi Peng Li ◽  
Ying Hong Li ◽  
W. He ◽  
Yu Qin Li ◽  
Xiang Fan Nie ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Cross Section ◽  
High Strain ◽  
Microscopic Structure ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Fine Grain ◽  
High Strain Rate Deformation ◽  
The Usa ◽  
Shock Processing

In this paper, the microstructure and microhardness of laser shock processed (LSP) Ti-6Al-2.5Mo-1.5Cr-0.5Fe-0.3Si titanium alloy with and without annealing were examined and compared. The titanium alloy samples were LSP processed with 3 layers at 4.24GW/cm2. Some of the samples were vacuum annealed at 623K for 10 hours. The microscopic structure with and without annealing were tested and analyzed by SEM, TEM. The results indicated that after LSP, the shock wave provided high strain rate deformation and led to the formation of ultra-fine grain. Comparing with the samples without annealing, the dislocation density was lower and the grain-boundary was more distinct in the annealed samples, but the sizes of the ultra-fine grain didn’t grow bigger after annealing. On the other hand, the microhardness measurement was made on the cross-section. It is obviously that the laser shock processing improved the microhardness of the Ti-6Al-2.5Mo-1.5Cr-0.5Fe-0.3Si for about 12.2% at the surface, and the hardness affected depth is about 500 microns. The microhardness after annealing is 10 HV0.5lower, but the affected depth is not changed. The titanium alloy after LSP is thermostable at 623K; thus break the USA standard AMS2546, in which titanium parts after LSP are subjected in subsequent processing should not exceed 589K.

Investigations on TC4-DT titanium alloy using laser shock processing with high energy

2012 ◽  
Vol 10 (s2) ◽  
pp. S21408-321410 ◽  
Author(s):  
Zhigang Che Zhigang Che ◽  
Jianhui Dai Jianhui Dai ◽  
Haiying Xu Haiying Xu ◽  
Shikun Zou Shikun Zou ◽  
Ziwen Cao Ziwen Cao
Keyword(s):  
Titanium Alloy ◽  
High Energy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Coating Influence on Residual Stress in Laser Shock Processing

2007 ◽  
Vol 353-358 ◽  
pp. 1753-1756 ◽  
Author(s):  
Y.Y. Xu ◽  
Xu Dong Ren ◽  
Yong Kang Zhang ◽  
Jian Zhong Zhou ◽  
Xing Quan Zhang
Keyword(s):  
Residual Stress ◽  
Titanium Alloy ◽  
Laser System ◽  
Pressure Amplitude ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Black Paint ◽  
Fatigue Lifetime ◽  
Uncoated Specimen ◽  
Shock Processing

Laser shock processing is an important surface treatment that induces compressive residual stress to components, where the coating plays an important role. This paper deduce a general formula of the optimum thickness of coating according to the law of energy conservation and analysis the influence of coating on residual stress of the titanium alloy in laser shock processing. Titanium alloy with black paint, silica acid black paint and without coating were shocked by laser system respectively. It was found that coating could increase shock pressure amplitude and laser density absorption. Compressive residual stresses at the surface of the sample with the black paint and silica acid black paint are about -212.2MPa and -264.2MPa respectively, while the surface stress on the uncoated specimen is very high tensile stress. The bare surface due to melting and vaporization, leads to a very rough surface. The depth of induced compressive stress could reduce stress corrosion cracking in titanium alloy and improve fatigue lifetime.

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