Analysis on Mechanical Property of 6061-T6 Aluminum Alloy by Laser Shot Peening Based on Strain Rate

2012 ◽  
Vol 39 (5) ◽  
pp. 0503003
Author(s):  
周建忠 Zhou Jianzhong ◽  
左立党 Zuo Lidang ◽  
黄舒 Huang Shu ◽  
徐增闯 Xu Zengchuang ◽  
杨晶 Yang Jing ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Aluminum Alloy ◽  
Strain Rate ◽  
Shot Peening ◽  
Laser Shot

scholarly journals Laser Shot Peening to Improve Surface Properties of Precipitation Hardened Aluminum Alloy Al-6061-T6

2014 ◽  
Vol 42 (6) ◽  
pp. 494
Author(s):  
Sathyanesan SATHYAJITH ◽  
Sivaperuman KALAINATHAN ◽  
Sathya SWAROOP
Keyword(s):  
Aluminum Alloy ◽  
Surface Properties ◽  
Shot Peening ◽  
Laser Shot ◽  
Al 6061

Influence of Laser Shot Peening Parameters on the Surface Hardness and Roughness of 7075 Aluminum Alloy

2018 ◽  
Vol 920 ◽  
pp. 83-88
Author(s):  
Jun Hao Zhang ◽  
Xiu Quan Cheng ◽  
Qin Xiang Xia ◽  
Jia Yu Li
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Shot Peening ◽  
Surface Hardness ◽  
Laser Shot ◽  
7075 Aluminum Alloy ◽  
Alloy Specimen ◽  
Structural Parts ◽  
The Impact ◽  
Overlap Rate

The laser shot peening has the widely application prospect in aircraft structural parts repairment. The influence of laser shot peening parameters on the surface hardness and surface roughness has guiding significance for laser shot peening process. The variation law of surface hardness and surface roughness in the peening area of 7075 aluminum alloy were obtained based on the experiment research. The results show that the surface hardness improves effectively after laser shot peening, and the maximum hardness is 205.4HV, which is improved by 19.49% compared with the original hardness. Besides, the surface roughness of the rough specimen decreases; whereas, those of the smooth specimen increases after laser shot peening. However, both the surface hardness and surface roughness tend to be saturated when the impact times exceeds 3 times or the overlap rate exceeds 50%. Therefore, a good repairment effect can be obtained with 3 impact times and 50% overlap rate for the 7075 aluminum alloy specimen.

Study on the Improvement of Fatigue Crack Growth Performance of 6061-T6 Aluminum Alloy Subject to Laser Shot Peening

2011 ◽  
Vol 464 ◽  
pp. 391-394 ◽  
Author(s):  
Cheng Dong Wang ◽  
Jian Zhong Zhou ◽  
Shu Huang ◽  
X.D. Yang ◽  
Z.C. Xu ◽  
...  
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Crack Growth ◽  
Shot Peening ◽  
Compressive Residual Stress ◽  
Compact Tension ◽  
Crack Size ◽  
Laser Shot ◽  
Material Surface ◽  
Residual Stress Field

In order to enhance mechanical property and restrain crack growth of 6061-T6 aluminum alloy, laser shot peening (LSP) was employed to induce compressive residual stress and plastic deformation on the surface of metal. The FEA code ABAQUS and MSC. Fatigue were used to simulate crack growth of Compact tension (CT) specimens treated by LSP. The numerical simulation results showed that LSP can effectively inhibit the crack growth, decrease the crack growth rate as well as increase the final crack size, and as a consequence, fatigue life was extended. Adding peening times could get deeper compressive residual stress field which strengthen material surface and restrain crack growth, but the fatigue stress intensity factor threshold decreases.

Study on Fatigue Crack Growth Performance of 6061-T6 Aluminum Alloy after Laser Shot Peening

2011 ◽  
Vol 38 (7) ◽  
pp. 0703009
Author(s):  
周建忠 Zhou Jianzhong ◽  
王呈栋 Wang Chengdong ◽  
黄舒 Huang Shu ◽  
杨小东 Yang Xiaodong ◽  
徐增闯 Xu Zengchuang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Growth Performance ◽  
Crack Growth ◽  
Shot Peening ◽  
Laser Shot

The Formability and Elongation of Aluminum Alloys AA5083 and AA3003 for Micro-Truss Sandwiches Manufacturing

2020 ◽  
Vol 38 (9A) ◽  
pp. 1396-1405
Author(s):  
Arwa F. Tawfeeq ◽  
Matthew R. Barnett
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate ◽  
Cost Effective ◽  
Tensile Tests ◽  
Truss Structures ◽  
High Quality ◽  
Trade Off ◽  
Clad Layer ◽  
Higher Temperature ◽  
Different Shapes

The development in the manufacturing of micro-truss structures has demonstrated the effectiveness of brazing for assembling these sandwiches, which opens new opportunities for cost-effective and high-quality truss manufacturing. An evolving idea in micro-truss manufacturing is the possibility of forming these structures in different shapes with the aid of elevated temperature. This work investigates the formability and elongation of aluminum alloy sheets typically used for micro-truss manufacturing, namely AA5083 and AA3003. Tensile tests were performed at a temperature in the range of 25-500 ○C and strain rate in the range of 2x10-4 -10-2 s-1. The results showed that the clad layer in AA3003 exhibited an insignificant effect on the formability and elongation of AA3003. The formability of the two alloys was improved significantly with values of m as high as 0.4 and 0.13 for AA5083 and AA3003 at 500 °C. While the elongation of both AA5083 and AA3003 was improved at a higher temperature, the elongation of AA5083 was inversely related to strain rate. It was concluded that the higher the temperature is the better the formability and elongation of the two alloys but at the expense of work hardening. This suggests a trade-off situation between formability and strength. 

Effect of strain rate on the ductility of a nanostructured aluminum alloy

2006 ◽  
Vol 54 (6) ◽  
pp. 1175-1180 ◽  
Author(s):  
B.Q. Han ◽  
J.Y. Huang ◽  
Y.T. Zhu ◽  
E.J. Lavernia
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate

Inoculation and Fading of Sr-Modified A356.2 Aluminum Alloy in Squeeze Casting

2016 ◽  
Vol 850 ◽  
pp. 671-678
Author(s):  
Jian Wei Niu ◽  
Lie Jun Li ◽  
Hai Jun Liu ◽  
Ji Xiang Gao ◽  
Chuan Dong Ren
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Aluminum Alloy ◽  
Hydrogen Absorption ◽  
Deleterious Effect ◽  
Squeeze Casting ◽  
Eutectic Silicon ◽  
Direct Reading ◽  
Air Bag ◽  
Fading Rate

The inoculation and fading behavior of Sr-modified aluminum alloy A356. 2 were studied for air bag bracket produced by squeeze casting. The effects of Sr, P, B contents and casting temperature on the microstructure and eutectic silicon morphology in different periods of inoculation were investigated by SEM and direct-reading Spectrometer. The influence of inoculation fading rate and addition of Sr on the casting mechanical properties and hydrogen absorption was studied. The experimental results showed that the inoculation process was completed in 1 h, and the eutectic silicon morphology can be maintained in almost subsequent 40 h after the addition of Sr. The fading rate decreased appreciably with the increase of casing temperature, P and B contents. The deleterious effect of the inoculation fading of Sr on the casting mechanical property can be compensated by the squeeze casting.

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