4.6 Article

Effect of Synchronized Laser Shock Peening on Decreasing Defects and Improving Microstructures of Ti-6Al-4V Laser Joint

Related references

Note: Only part of the references are listed.
Article Optics

Investigation on repairing 30CrMnSiNi2A steel with laser additive and subtractive hybrid remanufacturing technology

Zifa Xu et al.

Summary: This study proposed a hybrid technique of continuous-wave laser deposition and pulsed laser finishing for repairing 30CrMnSiNi2A ultra-high strength steel. By comparing the microstructure and mechanical properties of different parts, it was found that laser finishing can further improve the surface properties of repaired parts, including surface roughness, micro-hardness, and wear resistance.

OPTICS AND LASERS IN ENGINEERING (2023)

Article Engineering, Manufacturing

Strain-Based Fatigue Experimental Study on Ti-6Al-4V Alloy Manufactured by Electron Beam Melting

Alberto David Pertuz-Comas et al.

Summary: This paper investigates the low-cycle fatigue of Ti-6Al-4V specimens manufactured by electron beam melting (EBM). Static and fatigue tests were conducted, and the results were analyzed and compared using different models. The material exhibited plastic strain softening and possible brittle behavior.

JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING (2023)

Article Construction & Building Technology

A comparative study on the mechanical behavior of S355J2 steel repair-welded joints

Banglong Yu et al.

Summary: The microstructure and mechanical behavior of S355J2 steel base metal, welded and repair-welded joints were investigated. The microhardness of repair-welded joints decreased with the growth in grain size. Both elongations of welded and repair-welded joints were reduced compared with the base metal. In terms of cyclic loading behavior, S355J2 steel base metal, welded, and repair-welded joints exhibited continuously softened, with repair-welded joints experiencing greater softening than welded joints.

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH (2023)

Article Materials Science, Multidisciplinary

Improving superficial microstructure and properties of the laser-processed ultrathin kerf in Ti-6Al-4V alloy by water-jet guiding

Yang Chao et al.

Summary: In this study, gas-assisted laser (GAL) and water-jet guided laser (WGL) processing technologies were used to machine ultrathin kerfs in Ti-6Al-4V alloy. The GAL processing resulted in high depth-to-width ratios but increased roughness due to the formation of a scaled recast layer. In contrast, the WGL processing produced low depth-to-width ratios and decreased roughness by eliminating remelted debris and heat. The microhardness and wear properties varied between the two processing methods.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2023)

Article Nanoscience & Nanotechnology

Critical role of subgrain orientation on the stability of mechanical properties of selective laser melting manufactured alloys

Yanan Zhao et al.

Summary: This study found that the orientation of columnar grains is determined by the growth direction of subgrains within them. The difference in deformation between grains with the 001 orientation and other orientations is an important factor that affects the stability of mechanical properties in SLM manufactured alloys.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2022)

Article Engineering, Mechanical

On the effects of laser shock peening on fatigue behavior of V-notched AlSi10Mg manufactured by laser powder bed fusion

Erfan Maleki et al.

Summary: Post-processing methods, such as T6 thermal treatment, laser shock peening, and electrochemical polishing, were investigated for their effects on the properties of laser powder bed fusion materials. It was found that laser shock peening has the potential to close sub-surface pores and, when combined with heat treatment and polishing, significantly improve the fatigue life of the materials.

INTERNATIONAL JOURNAL OF FATIGUE (2022)

Article Engineering, Mechanical

Strengthening CrFeCoNiMn0.75Cu0.25 high entropy alloy via laser shock peening

Wujing Fu et al.

Summary: The present work demonstrates that laser shock peening (LSP) can significantly improve the mechanical properties of CrFeCoNiMn0.75Cu0.25 high entropy alloy (HEA). LSP-treated HEA samples achieve a yield strength more than two times that of as-cast alloys, attributed to the introduction of a gradient microstructure comprising subgrains, dense dislocations, and nano-twins near the treated surface. The combination of dislocation hardening and mechanical twinning leads to excellent plasticity during tensile loading. The results also indicate the possibility of developing gradient-structured HEAs with excellent mechanical properties using LSP.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

Article Engineering, Industrial

Crystallographic texture evolutions of Ti-6Al-4V chip foils in relation to strain path and high strain rate arising from large strain extrusion machining process

Qingqing Wang et al.

Summary: Large strain extrusion machining (LSEM) is a promising process for creating chip foils with ultrafine grains and specific crystallographic textures. The study reveals that the deformation histories and crystallographic texture variations in Ti-6Al-4V chip foils during LSEM can be controlled by modifying the chip thickness ratio. Basal and 1-st order pyramidal slip systems were identified as the main deformation modes in LSEM.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

Article Materials Science, Coatings & Films

Effects of ultrasonic shot peening on fatigue behavior of TA15 titanium alloy fabricated by laser melting deposition

Bin Wu et al.

Summary: In this study, ultrasonic shot peening (USP) was used to strengthen TA15 titanium alloy manufactured by laser melting deposition (LMD). The treatment resulted in improvements in surface microhardness and fatigue life. High-density dislocations and compressive residual stress were found to contribute to the enhancement in fatigue performance.

SURFACE & COATINGS TECHNOLOGY (2022)

Article Materials Science, Multidisciplinary

Effect of electrostatic field on microstructure and mechanical properties of the 316L stainless steel modified layer fabricated by laser cladding

Wentai Ouyang et al.

Summary: This research investigates the laser cladding 316L stainless steel layer with and without electrostatic field, and finds that high solidification rate and specific convection cause grain coarsening and crystal growth parallel to the laser scanning direction. The exertion of electrostatic field opposite to laser scanning direction promotes diffusion and convection, leading to directional solidification and columnar grains. On the other hand, the exertion of electrostatic field consistent with laser scanning direction restricts diffusion and convection, resulting in ordered solidification and ultrafine grain structure in the cladding layer.

MATERIALS CHARACTERIZATION (2022)

Article Engineering, Mechanical

Fatigue strength and residual stress evaluation of repair welding of bogie frame for railway vehicles

Jung-Won Seo et al.

Summary: The fatigue characteristics of welding and repair welding of material SM490A for railway vehicles were evaluated. The results showed that the S-N curve of repair welding specimens was lower than that of welding specimens, mainly due to greater residual stress in the repair welding specimens. Additionally, FEA results suggest that minimizing repair welding width and using reverse welding pass can improve fatigue characteristics.

ENGINEERING FAILURE ANALYSIS (2021)

Article Optics

Experimental study on CFRP drilling with the picosecond laser double rotation cutting technique

Wentai Ouyang et al.

Summary: The picosecond laser double rotation cutting technique was used to machine holes on CFRP components, resulting in improved mechanical properties compared to traditional mechanical drilling methods. The machining process showed high precision without burrs or fractures, leading to enhanced tensile strength and fatigue performance of the CFRP samples.

OPTICS AND LASER TECHNOLOGY (2021)

Article Materials Science, Multidisciplinary

Effect of laser shock peening on microstructure and fatigue properties of thin-wall welded Ti-6Al-4V alloy

Xiaosong Shi et al.

Summary: This study investigated the use of laser shock peening to improve the high cycle fatigue performance of thin-wall welded Ti-6Al-4V alloys. The results showed that laser shock peening can enhance the fatigue strength of the alloy, as well as improve residual stress distribution and grain structure.

VACUUM (2021)

Article Metallurgy & Metallurgical Engineering

Microstructure and mechanical behavior of similar butt-joints of ZK60 and ZK60-1.5RE magnesium alloys produced by linear friction stir welding

Erenilton Pereira da Silva et al.

Summary: The microstructure and mechanical properties of butt-joints produced by linear friction stir welding of similar plates of as-cast ZK60 and modified ZK60 with 1.5 wt.% RE (ZK60-1.5RE) were investigated. It was found that there were notable differences in the size of the thermomechanical affected zone between ZK60 and ZK60-1.5RE, with the latter showing a more refined microstructure in the stirred zone. The thermomechanical affected zone exhibited a gradient microstructure with deformed grains progressively more recrystallised towards the stirred zone, indicating the role of twinning, recovery, static, and dynamic recrystallisation during friction stir welding.

JOURNAL OF MAGNESIUM AND ALLOYS (2021)

Article Engineering, Manufacturing

Cracks Repairing by Using Laser Additive and Subtractive Hybrid Manufacturing Technology

Zifa Xu et al.

JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME (2020)

Article Materials Science, Coatings & Films

Effect of overlapping condition on large area NiTi layer deposited on Ti-6Al-4V alloy by TIG cladding technique

Ritesh Prasad et al.

SURFACE & COATINGS TECHNOLOGY (2020)

Article Materials Science, Coatings & Films

Effects of electromagnetic compound field on the escape behavior of pores in molten pool during laser cladding

Yong Hu et al.

SURFACE & COATINGS TECHNOLOGY (2020)

Article Engineering, Industrial

Explosive welding of aluminium to stainless steel using carbon steel and niobium interlayers

G. H. S. F. L. Carvalho et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2020)

Article Engineering, Manufacturing

Explosive welding of Al alloys and high strength duplex stainless steel by controlling energetic conditions

Xiang Chen et al.

JOURNAL OF MANUFACTURING PROCESSES (2020)

Article Engineering, Manufacturing

Pore Closure Effect of Laser Shock Peening of Additively Manufactured AlSi10Mg

Anton du Plessis et al.

3D PRINTING AND ADDITIVE MANUFACTURING (2019)

Article Engineering, Biomedical

Miniature CoCr laser welds under cyclic shear: Fatigue evolution and crack growth

M. Kanerva et al.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2019)

Article Automation & Control Systems

Characterization and formation mechanism of periodic solidification defects in deep-penetration laser welding of NiCrMoV steel with heavy section

Yu Sun et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2019)

Article Engineering, Industrial

Melt flow and thermal transfer during magnetically supported laser beam welding of thick aluminum alloy plates

Jicheng Chen et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2018)

Article Engineering, Industrial

Geometry distortion and residual stress of alternate double-sided laser peening of thin section component

Yongxiang Hu et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2018)

Article Engineering, Industrial

Effect of high energy shot-peening on the microstructure and mechanical properties of Al5052/Ti6Al4V lap joints

Haodong Wang et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2018)

Article Engineering, Industrial

Improved degassing in laser beam welding of aluminum die casting by an electromagnetic field

Andre Fritzsche et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2018)

Article Optics

Hot cracking in pulsed Nd:YAG laser welding of AA5456

Hamidreza Hekmatjou et al.

OPTICS AND LASER TECHNOLOGY (2018)

Article Materials Science, Multidisciplinary

Microstructural evolution of cold-sprayed Inconel 625 superalloy coatings on low alloy steel substrate

Atanu Chaudhuri et al.

ACTA MATERIALIA (2017)

Article Materials Science, Multidisciplinary

A Quantitative Evaluation of Microstructure by Electron Back-Scattered Diffraction Pattern Quality Variations

Suk Hoon Kang et al.

MICROSCOPY AND MICROANALYSIS (2013)

Article Nanoscience & Nanotechnology

Deformation and fracture behavior of laser processed dense and porous Ti6Al4V alloy under static and dynamic loadinge

N. Biswas et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2012)

Article Materials Science, Multidisciplinary

Molecular dynamics simulation of the effect of surface roughness and pore on linear friction welding between Ni and Al

Zhen Jiao et al.

COMPUTATIONAL MATERIALS SCIENCE (2011)

Article Metallurgy & Metallurgical Engineering

Repair welding process of friction stir welding groove defect

Liu Hui-jie et al.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2009)