Scaricare Advance Steel 2010 Crack 64 Bits [Extra Quality]

Scaricare Advance Steel 2010 Crack 64 Bits [Extra Quality]

Download File ===== https://urluss.com/2t8p80

Abstract:The welded joints of 1Cr18Ni9Ti austenitic stainless steel and GH1140 nickel-based superalloy dissimilar materials used in certain types of aero-engine combustion liner components are prone to crack initiation during service, seriously affecting the service life of the combustion liner. In this study, laser shock peening (LSP) was applied to the dissimilar metal weld of 1Cr18Ni9Ti and GH1140, which are used in the combustion liner parts of aero engines. The effects of LSP on the residual stress, microhardness, microstructure and high-cycle fatigue performance of the weld were analyzed. The results show that the residual stress in the weld and heat-affected zones was converted from tensile residual stress to high amplitude compressive residual stress via LSP. Furthermore, the surface hardness of every region of the combustion liner weld was increased, especially in the weld zone, where an increase of 41.4% from 162 HV to 229 HV was observed. Simultaneously, with the introduction of grain refinement, gradient plastic deformation in the depth direction and the dislocation structure of the surface material, the high-cycle fatigue limit of the weld specimen was significantly increased and the fatigue limit of the 1Cr18Ni9Ti/GH1140 welded joint was improved by 65.39%, from 289 to 478 MPa.Keywords: dissimilar metals; welding joint; laser shock peening (LSP); residual stress; microhardness; fatigue limit

The technological advancements have developed nanoparticles that are highly significant in terms of machining operations, i.e., these machining operations involve different lubrication techniques and, when the lubrication is carried out using nanoparticles with the base fluids, the overall performance of the machining operation is increased. When nanofluids are applied for any machining operation, a gentle surface is created, due to which, less force is required for any operation, and so the same result can be obtained with a reduced application of the cutting force. As the cutting force gets reduced, a lower amount of the driving force is needed to be applied for performing the particular operation. This not only reduces the amount of the force that is to be applied, but also reduces the chances of cracks on the surface of the workpiece, i.e., reduces the surface roughness by improving the surface quality overall, which involves different parameters for its measurements. In addition, this reduced force application helps to apply comparatively less force through the tool on the workpiece, so there is less chance of damage to the tool, i.e., even if the wear at certain angles does occur, it is actually at a lower ratio than before. This helps to reduce the wear and tear of the tool and so increases the tool life. Thus, in short, we can say that, by using nanofluid, the cutting forces are reduced, which leads to an improved surface quality and increased tool life. 2b1af7f3a8