Design and mechanical property analysis of AA1050 turbine blades manufactured by equal channel angular extrusion and isothermal forging

Puertas, I.; Pérez, C.J. Luis; Salcedo, Daniel; León, J.; Fuertes, J.P.; Luri, R.

doi:10.1016/j.matdes.2013.05.089

Cited by 24 publications

(9 citation statements)

References 27 publications

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“…This can be due to a decreasing of the internal strains and accumulation of internal energy, therefore, increasing the possibility for crack formation, or it can be related to the increase of the strain rate sensitivity of the material, which causes resistance to neck formation. This improvement of the mechanical properties of material behavior using the ECFE process has also been reported for Al1050, Al6061, Al7075, and nickel during the ECAP process [26,27,29,30] and Al-3%Mg-0.2%Sc during the HPT process [31]. In addition, the ECAP process on the same material, reported by Tolaminejad and Dehghani [32], indicated that about 64% and 108% enhancement of the hardness value and approximately 202% and 267% improvement at the yield strength magnitude have been achieved after the first and fourth passes when compared to the annealed condition.…”

Section: Mechanical Propertiessupporting

confidence: 76%

Experimental Investigation of the Equal Channel Forward Extrusion Process

Ebrahimi

Djavanroodi

Tiji

et al. 2015

Metals

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Among all recognized severe plastic deformation techniques, a new method, called the equal channel forward extrusion process, has been experimentally studied. It has been shown that this method has similar characteristics to other severe plastic deformation methods, and the potential of this new method was examined on the mechanical properties of commercial pure aluminum. The results indicate that approximate 121%, 56%, and 84% enhancements, at the yield strength, ultimate tensile strength, and Vickers micro-hardness measurement are, respectively, achieved after the fourth pass, in comparison with the annealed condition. The results of drop weight impact test showed that the increment of 26% at the impact force, and also decreases of 32%, 15%, and 4% at the deflection, impulse, and absorbed energy, are respectively attained for the fourth pass when compared to the annealed condition. Furthermore, the electron backscatter diffraction examination revealed that the average grain size of the final pass is about 480 nm.

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Section: Mechanical Propertiessupporting

confidence: 76%

Experimental Investigation of the Equal Channel Forward Extrusion Process

Ebrahimi

Djavanroodi

Tiji

et al. 2015

Metals

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“…However, it is difficult to predict and control isothermal forming process and metal flow [13][14][15][16][17][18]. Few studies have been related to the isothermal forming process of the magnesium alloy components with large size.…”

Section: Introductionmentioning

confidence: 99%

Isothermal forming of the large-size AZ80A magnesium alloy forging with high mechanical properties

Lin

Zhao

Shi

et al. 2015

Int J Adv Manuf Technol

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There is an increasing demand for magnesium alloy in the automobile and aerospace industries, but the large-size magnesium alloy forging is difficult to be obtained by conventionally machining with high mechanical properties. The isothermal forming was carried out to form the large-size magnesium alloy forging. The forming process of isothermal forming is studied by finite element model simulation and experiment. The microstructure and tensile properties of the magnesium alloy forging processed by isothermal forming after T5 heat treatment are analyzed. The flow lines and texture played important roles in mechanical properties of the magnesium alloy forging. The ultimate tensile strength, yield strength, and elongation of the web of the forging at room temperature after T5 heat treatment were as high as 370.6 MPa, 280.2 MPa, and 7.5 %, respectively. At 130°C, the web of the forging had the highest tensile properties, which followed the same trend as those at room temperature, with the ultimate tensile strength, yield strength, and elongation as high as 258.4 MPa, 186.1 MPa, and 42.8 %, respectively, which showed the excellent mechanical properties.

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“…These authors analyze and compare the microhardness of the manufactured bolts, and tension tests are performed, thus concluding that the ECAP-processed materials have a better forgeability and hardness. In addition, other components, such as rings [18], blades [19] and gears [20], have also been manufactured from these materials, where this always leads to an improvement, both in hardness and in mechanical strength for the mechanical components forged from previously ECAP-processed material.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Analysis of an Al-Mg Alloy Connecting Rod with Submicrometric Structure

León¹,

Salcedo²,

Murillo³

et al. 2015

Metals

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Over these last few years, there has been a growing interest in developing mechanical components from submicrometric materials due to the significant improvement that these materials present compared to their original state. This present research work deals with the study of the mechanical properties of a connecting rod isothermally forged from different starting materials. These materials are as follows: annealed aluminum alloy (AA) 5754, the same alloy previously deformed through equal channel angular pressing (ECAP) and a third case where the previously ECAP-processed material is subjected to a recovery heat treatment. A comparison is made between finite volume (FV) simulations and experimental tests with respect to hardness, plastic strain and forging force. Furthermore, the improvement in the mechanical properties of the connecting rod forged from predeformed material is evaluated in comparison to the connecting rod forged with annealed material. The microstructure of both cases is also compared at the end of the manufacturing process.

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Design and mechanical property analysis of AA1050 turbine blades manufactured by equal channel angular extrusion and isothermal forging

Cited by 24 publications

References 27 publications

Experimental Investigation of the Equal Channel Forward Extrusion Process

Experimental Investigation of the Equal Channel Forward Extrusion Process

Isothermal forming of the large-size AZ80A magnesium alloy forging with high mechanical properties

Mechanical Properties Analysis of an Al-Mg Alloy Connecting Rod with Submicrometric Structure

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