☆ 4.7 Article

Stress shielding in laser melting multilayered nickel-base superalloys under monotonic and cyclic loadings

INTERNATIONAL JOURNAL OF FATIGUE (2023)

Related references

Note: Only part of the references are listed.

Article Materials Science, Multidisciplinary

Investigation of strengthening mechanisms in an additively manufactured Haynes 230 alloy

Bo Yang et al.

Summary: This study compares the microstructure and mechanical behavior of as-printed and stress-relieved Haynes 230 Ni alloys prepared by laser powder bed fusion. The research reveals that after stress-relief treatment, nanoprecipitates in the alloy have formed numerous aligned orientation relationships with the matrix.

ACTA MATERIALIA (2022)

Add to Collection

Article Engineering, Mechanical

Shielding effects on fatigue and crack growth of the recasting zone induced by laser manufacturing in a nickel-based superalloy

Tinglian Zhang et al.

Summary: The present study investigated the fatigue properties and crack growth of laser recasting materials using experimental and computational methods. The shielding effect observed is attributed to strength mismatch, leading to cyclic softening and mean stress relaxation in the under-matched recasting material. The recasting material exhibits higher crack nucleation resistance and lower crack growth rate compared to the base material, indicating that the weak recasting zone does not significantly impact the overall mechanical performance of the structure.

INTERNATIONAL JOURNAL OF FATIGUE (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Toward qualification of additively manufactured metal parts: Tensile and fatigue properties of selective laser melted Inconel 718 evaluated using miniature specimens

H. Y. Wan et al.

Summary: The study investigated tensile and fatigue properties of selective laser melted Inconel 718 specimens with different thicknesses, revealing the impact of specimen thickness to microstructure unit size ratio on premature necking. A probabilistic statistical model for fatigue limit prediction was proposed, and a standard of t/d >= 4 was recommended for miniature specimen evaluation.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

Add to Collection

Article Nanoscience & Nanotechnology

Microstructure and loading direction dependent hardening and damage behavior of laser powder bed fusion AlSi10Mg

Lubin Song et al.

Summary: This study investigates the strain hardening and damage mechanisms of laser powder bed fusion AlSi10Mg under different build platform temperatures and loading directions. It was found that the microstructure size and melt pool border orientation have significant effects on the mechanical behavior of the material. The findings provide insights into the understanding of the correlation between mechanical behavior and heterogeneous microstructure.

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

Add to Collection

Article Mechanics

Anisotropic damage evolution and modeling for a nickel-based superalloy built by additive manufacturing

Changhao Pei et al.

Summary: This study characterizes the damage evolution in Inconel 718 alloy built by selective laser melting (SLM) by analyzing the effects of microstructural features such as porosity and precipitates. The research introduces a microstructure-dependent damage model to quantitatively describe the contributions of microstructures to the macroscopic material degradation. The study reveals the importance of pore size, shape, and distribution in the anisotropic damage evolution of the alloy.

ENGINEERING FRACTURE MECHANICS (2022)

Add to Collection

Article Nanoscience & Nanotechnology

Effects of heat treatments on microstructure and mechanical properties of laser melting multi-layer materials

Tinglian Zhang et al.

Summary: The effects of different heat treatments on the microstructure and mechanical properties of laser melting nickel-based superalloys were systematically investigated in this study. The strength improvement of the heat-treated material was mainly derived from aging treatment and direct aging treatment, and it is recommended to use direct aging treatment for strengthening laser melting materials.

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

Add to Collection

Article Engineering, Mechanical

Anisotropic cyclic plasticity modeling for additively manufactured nickel-based superalloys

Shengzhe Jin et al.

Summary: This paper establishes a constitutive model for a nickel-based superalloy manufactured by selective laser melting to characterize its cyclic mechanical behaviors under multiaxial loading conditions. It is found that the effects from the building orientation decrease with multiaxial cyclic loads. By introducing a cyclic constitutive model based on the Hill criterion and considering the orthotropic mechanical properties depending on loading cycles, the computation confirms that the model can reasonably simulate the cyclic elastic-plastic behavior under non-proportional complex loading conditions and provides an applicable method for engineering applications.

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2022)

Add to Collection

Article Engineering, Mechanical

Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusion

M-S Duval-Chaneac et al.

Summary: This study produced multi-material specimens of 316L stainless steel and IN718 using the Laser Powder Bed Fusion (L-PBF) process, and investigated the effects of heat treatment on microstructure and tensile properties. The results showed that crack propagation resistance is mainly controlled by the local microstructural strength.

INTERNATIONAL JOURNAL OF FATIGUE (2022)

Add to Collection

Article Engineering, Mechanical

Multi-axial fatigue life assessment of additively manufactured nickel-based superalloys

Shengzhe Jin et al.

INTERNATIONAL JOURNAL OF FATIGUE (2022)

Add to Collection

Article Engineering, Mechanical

Multiscale plasticity behavior and fatigue performance of laser melting multi-layer nickel-based superalloys upon heat treatments

Tinglian Zhang et al.

Summary: This study provides a deep insight into the strengthening mechanisms and cyclic plasticity behaviors of laser-manufactured materials, showing that heat treatments have significant effects on laser melting nickel-based superalloys, improving strength but decreasing ductility.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

Add to Collection

Article Materials Science, Multidisciplinary

New insights on cellular structures strengthening mechanisms and thermal stability of an austenitic stainless steel fabricated by laser powder-bed-fusion

Thomas Voisin et al.

Summary: The rapid solidification cellular structures in 316L austenitic stainless steels fabricated by laser powder-bed-fusion were found to have specific crystallographic orientations in cell walls, which act as barriers to dislocation movement and contribute to material strengthening. Additionally, oxide precipitates confined inside cell walls also enhance the material's strength. Overall, the understanding of these intrinsic characteristics and strengthening mechanisms can help improve the material's thermal stability and high strength.

ACTA MATERIALIA (2021)

Add to Collection

Article Engineering, Mechanical

Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect

Wei Song et al.

Summary: This study investigates the fatigue crack growth behavior of high strength steel welded joints using different weld filler materials, finding that the undermatched welded material exhibits higher FCGR curves than the base metal and evenmatched welded material. Additionally, the welded materials in the as-welded state show higher fatigue crack propagation resistance compared to those in the post welded heat treatment (PWHT) state.

INTERNATIONAL JOURNAL OF FATIGUE (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Characterization of the recasting-affected zone in the nickel-based superalloy single-pulse laser treatment

Tinglian Zhang et al.

Summary: The study found that a recasting-affected zone (RAZ) exists between the melting-solidified material and base material after laser treatment, which is strengthened by thermal plastification and other mechanisms. However, micro-cracks generated during laser manufacturing can significantly reduce fracture strain and fatigue life of the component. High thermal gradients during solidification are responsible for the plastic strengthening and micro-crack formation in RAZ.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

Add to Collection

Article Engineering, Mechanical

Revealing the hardening mechanisms of ion-irradiated nanostructured multilayers/substrate systems: A theoretical model

Kai Liu et al.

Summary: A mechanistic model is proposed for modeling the depth-dependent hardness of ion irradiated nanostructured multilayers/substrate systems, analyzing the dominant hardening mechanisms and deducing the hardness-depth relation at different stages. The model is validated by comparing theoretical results with experimental data, offering a promising way to qualitatively analyze other mechanical properties of ion-irradiated nanostructured multilayers/substrate systems.

INTERNATIONAL JOURNAL OF PLASTICITY (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Enhancing damage-resistance in low carbon martensitic steels upon dual-pass laser treatment

Hyun Seok Oh et al.

Summary: The study demonstrates that a dual-pass laser treatment applied to low carbon lath martensitic steel can simultaneously repair cracks, reduce surface roughness, and trigger phase transformations to create a more damage-resistant microstructure. The research investigates these influences using various analyses and mechanical tests, and discusses the underlying mechanisms.

SCRIPTA MATERIALIA (2021)

Add to Collection

Article Engineering, Mechanical

Cyclic plasticity modeling and fatigue life assessment of the recasting material of a nickel-based superalloy induced by laser manufacturing

Tinglian Zhang et al.

Summary: This study quantifies the effects of laser recasting superalloy through experimental and computational investigations, establishing fatigue life assessment and describing the mechanical properties of the recasting material. The results confirm that the mechanical strength of the recasting material reaches nearly 50% of the base material, while its fatigue life is only about 1/10 of the base material.

INTERNATIONAL JOURNAL OF FATIGUE (2021)

Add to Collection

Article Engineering, Industrial

Microstructural characterization and fatigue performance of the recast material induced by laser manufacturing of a nickel-based superalloy

Tinglian Zhang et al.

Summary: The research systematically investigated the microstructures and mechanical properties of laser-induced recast material on nickel-based superalloy Inconel 718, finding that the yield strength and microhardness in the recast zone are lower than that of the base material due to epitaxial growth of columnar grains and a decrease in strengthening phases gamma' and gamma''. On the other hand, the recast-affected zone shows higher yield strength attributed to the growth of strengthening twins, partial dissolution of the delta phase, and cold work hardening.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition

Y. W. Luo et al.

Summary: Blade-Integrated Disk is a one-piece design strategy for turbine engine components with high air compression efficiency. By utilizing laser melting deposition technique, a functionally graded material composed of GH4169 and K418 was processed and optimized through suitable heat treatment to exhibit continuous microstructure and excellent mechanical properties. Tensile and creep tests revealed that the graded specimens' performance was affected by the microstructure formed at different build heights.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

Add to Collection

Article Materials Science, Multidisciplinary

The effect of build direction and geometric optimization in laser powder bed fusion of Inconel 718 structures with internal channels

Galina Kasperovich et al.

Summary: A laser powder bed fusion strategy was developed to manufacture small channels with high dimensional accuracy in Inconel 718 structures. By optimizing the contour parameters and cross-section shape systematically, significant improvement in dimensional accuracy was achieved. Surface quality of external and internal surfaces were investigated, resulting in the best properties for inclinations below 45 degrees.

MATERIALS & DESIGN (2021)

Add to Collection

Article Mechanics

Fracture energy and tensile strength depending on stress triaxiality along a running crack front in three-dimensional cohesive modeling

Tinglian Zhang et al.

ENGINEERING FRACTURE MECHANICS (2020)

Add to Collection

Article Materials Science, Multidisciplinary

On selective laser melting of Inconel 718: Densification, surface roughness, and residual stresses

Mohamed Balbaa et al.

MATERIALS & DESIGN (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Small punch creep performance of heterogeneous microstructure dominated Inconel 718 fabricated by selective laser melting

L. Y. Wang et al.

MATERIALS & DESIGN (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Investigation of metal mixing in laser keyhole welding of dissimilar metals

Wenkang Huang et al.

MATERIALS & DESIGN (2020)

Add to Collection

Article Nanoscience & Nanotechnology

Scanning strategy dependent tensile properties of selective laser melted GH4169

Y. C. Wang et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2020)

Add to Collection

Article Engineering, Industrial

Microstructural evolution of laser-clad 75Cr3C2+25(80Ni20Cr) powder on Inconel 718 superalloy

Ali Khorram et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Void coalescence and ductile failure in IN718 investigated via high-energy synchrotron X-ray tomography and diffraction

Diwakar P. Naragani et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2020)

Add to Collection

Article Engineering, Mechanical

Cyclic plasticity modeling of nickel-based superalloy Inconel 718 under multi-axial thermo-mechanical fatigue loading conditions

Jingyu Sun et al.

INTERNATIONAL JOURNAL OF FATIGUE (2019)

Add to Collection

Article Materials Science, Multidisciplinary

The role of composition on the extent of individual strengthening mechanisms in polycrystalline Ni-based superalloys

A. J. Goodfellow et al.

MATERIALS & DESIGN (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Tensile fracture of an adhesive joint: the role of crack length and of material mismatch

F. Van Loock et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Improved plasticity of Inconel 718 superalloy fabricated by selective laser melting through a novel heat treatment process

X. Li et al.

MATERIALS & DESIGN (2019)

Add to Collection

Article Engineering, Mechanical

Assessment of advanced Taylor models, the Taylor factor and yield-surface exponent for FCC metals

K. Zhang et al.

INTERNATIONAL JOURNAL OF PLASTICITY (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Strengthening mechanisms in directed energy deposited austenitic stainless steel

Thale R. Smith et al.

ACTA MATERIALIA (2019)

Add to Collection

Article Automation & Control Systems

Investigation of recast and crack formation in laser trepanning drilling of CMSX-4 angled holes

Nicolau Iralal Morar et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2018)

Add to Collection

Review Optics

Pulsed Nd:YAG laser beam drilling: A review

Girish Dutt Gautam et al.

OPTICS AND LASER TECHNOLOGY (2018)

Add to Collection

Article Materials Science, Multidisciplinary

Microstructure, Fatigue Behavior, and Failure Mechanisms of Direct Laser-Deposited Inconel 718

Alex S. Johnson et al.

JOM (2017)

Add to Collection

Article Nanoscience & Nanotechnology

The tensile deformation behavior of laser repaired Inconel 718 with a non-uniform microstructure

Shang Sui et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2017)

Add to Collection

Article Nanoscience & Nanotechnology

The influence of Laves phases on the high-cycle fatigue behavior of laser additive manufactured Inconel 718

Shang Sui et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2017)

Add to Collection

Article Materials Science, Multidisciplinary

Variation of hardness, microstructure, and Laves phase distribution in direct laser deposited alloy 718 cuboids

Erica L. Stevens et al.

MATERIALS & DESIGN (2017)

Add to Collection

Article Engineering, Mechanical

Numerical study of the plastic behaviour in tension of welds in high strength steels

DM Rodrigues et al.

INTERNATIONAL JOURNAL OF PLASTICITY (2004)

Add to Collection

© Peeref 2019-2024. All rights reserved.