Tensile properties, residual stress distribution and grain arrangement as a function of sheet thickness of Mg–Al–Mn alloy subjected to two-sided and simultaneous LSP impacts

Luo, Kaiyu; Liu, B.; Wu, Lin; Zhang, Yan; Lu, Jinzhong

doi:10.1016/j.apsusc.2016.02.045

Cited by 33 publications

(2 citation statements)

References 23 publications

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“…In other research, they discovered that the produced distribution of residual stress and grain size in the depth direction were variables that may impact the tensile properties of the sheet thickness, as referenced in [60,61].…”

Section: Tensile Strengthmentioning

confidence: 99%

Experimental investigation of hot-wire laser deposition for the additive manufacturing of titanium parts

Naksuk¹,

Poolperm²,

Nakngoenthong³

et al. 2022

Mater. Res. Express

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The hot-wire laser welding is additive manufacturing (AM) technique, complex parts can be created directly by melting layers of wire. This process is characterized by the use of hot-wire process, a combination with the laser welding (LW) process in the AM process. In this research, the experimental investigation of additive manufacturing using a hot-wire laser welding on titanium alloy (grade 2) parts. The parameters in the hot-wire laser process of which there are three: (1) the welding speed, (2) wire current, and (3) wire feeding speed; this research examined the porosities, microhardness, tensile stress, and residual stress. The filler metal used titanium AMS (American welding society) 4951F (grade 2) welding wire and has a diameter of 1.6 mm. Finally, the appropriate hot wire laser welding parameters are 0.183 cm/s for welding speed, 40 A for wire current, and 1.00 m/min for wire feeding speed, which will give the average Vicker microhardness of 321.00-345.80 HV, the average tensile strength of 432.02 MPa (substrate); 670.30 MPa (horizontal direction), 497.39 MPa (Vertical direction).

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Section: Tensile Strengthmentioning

confidence: 99%

Experimental investigation of hot-wire laser deposition for the additive manufacturing of titanium parts

Naksuk¹,

Poolperm²,

Nakngoenthong³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The yield strength of the material was increased by 30% after shot peening, which opened the door to further research on the application of laser shot peening to various materials. In experimental studies, scholars have made great progress in improving metallic material properties such as fatigue life [ 9 ]; fracture toughness [ 10 ]; hardness and wear resistance [ 11 ]; strain rate [ 12 ]; residual stress [ 13 ]; material microstructure [ 14 ]. Currently, there are few studies on the application of LSP to ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Laser Shock Peening of B4C-TiB2 Composite Ceramics

et al. 2023

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The introduction of residual stresses using laser shock peening (LSP) is an effective means of improving the mechanical properties of ceramics. Numerical simulations offer greater convenience and efficiency than in-lab experiments when testing the effects of different processing techniques on residual stress distribution. In this work, a B4C-TiB2 ceramic model based on the extended Drucker–Prager model was established to investigate the effects of laser power density, the number of impacts and laser spot overlapping rate on the residual stress distribution, and the reliability of the simulation method was verified by experimental data. The following results are obtained: increasing the laser power density and the number of impacts can increase the surface residual compressive stress and reduce the depth of the residual compressive stress; the presence of multiple impacts will significantly reduce the depth of the residual compressive stress layer; with the increase in the laser spot overlapping rate, the compressive residual stress in the processed area gradually increases and is more uniformly distributed; the best processing effect can be achieved by using a spot overlapping rate of 50%.

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Effect of Shot Peening Strengths on Microstructure and Mechanical Properties of 316L Stainless Steel Prepared by 3D Printing

et al. 2023

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Herein, the influence of shot peening (SP) on the microstructure and mechanical properties of 3D printed 316L stainless steel is studied by optical microscopy (OM), electron backscattered diffraction (EBSD), and mechanical properties testing. The changes in microstructure and mechanical properties of 316L stainless steel by 3D printing under different SP strengths are explored, which are drawn as follows: 1) the microstructure of 3D‐printed 316L stainless steel is greatly refined, and the thickness of ultrafine microstructure in the surface layer increases from 0 to 112.5 μm with the increase in peening strengths from 0 to 0.4 MPa; 2) with the increase of peening strengths from 0 to 0.4 MPa, the hardness increases from 236 to 518 HV, and yield strength increases from 547.3 to 740.7 MPa; and 3) based on the EBSD results, the enhanced hardness and yield strength are caused by refinement hardening and dislocation hardening for the SP samples. In addition, it should be noted that the SP decreases the elongation of 3D‐printed 316L stainless steel up to 9%, and makes the ultimate tensile strength reach the maximum value of 871.2 MPa at 0.2 MPa SP strength.

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Tensile properties, residual stress distribution and grain arrangement as a function of sheet thickness of Mg–Al–Mn alloy subjected to two-sided and simultaneous LSP impacts

Cited by 33 publications

References 23 publications

Experimental investigation of hot-wire laser deposition for the additive manufacturing of titanium parts

Experimental investigation of hot-wire laser deposition for the additive manufacturing of titanium parts

Numerical Simulation on Laser Shock Peening of B4C-TiB2 Composite Ceramics

Effect of Shot Peening Strengths on Microstructure and Mechanical Properties of 316L Stainless Steel Prepared by 3D Printing

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