Rengeng Li
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View article: The Role of Si Element on the Precipitation Behavior of GH2907 Superalloys
The Role of Si Element on the Precipitation Behavior of GH2907 Superalloys Open
GH2097, a Fe-Ni-Co-based superalloy extensively employed in high-temperature critical components such as aircraft engines, was investigated to elucidate the influence of Si content on its precipitation behavior and mechanical properties. B…
View article: Formation of Ultrafine-Grained Dual-Phase Microstructure by Warm Deformation of Austenite in High-Strength Steel
Formation of Ultrafine-Grained Dual-Phase Microstructure by Warm Deformation of Austenite in High-Strength Steel Open
Thermomechanical processing by applying deformation-induced ferrite transformation (DIFT) is an effective method of producing ultrafine-grained (UFG) ferritic steels, which usually present high yield strength but low strain hardening. In t…
View article: Research Progress on Texture Regulation of Rare-Earth Magnesium Alloys
Research Progress on Texture Regulation of Rare-Earth Magnesium Alloys Open
Magnesium and its rare-earth alloys are extensively studied for their lightweight properties and high specific strength, making them attractive for aerospace, automotive, and biomedical applications. However, their hexagonal close-packed s…
View article: Modification of Microstructure and Properties of Cold-Sprayed AlSi10Mg+TiB2 Composite by Friction Stir Process
Modification of Microstructure and Properties of Cold-Sprayed AlSi10Mg+TiB2 Composite by Friction Stir Process Open
This study investigates the influence of friction stir processing (FSP) on the microstructure, microhardness, and tribological properties of cold-sprayed AlSi10Mg+TiB2 composite coatings on Al substrates. Due to the limitation of particle …
View article: Role of Stabilization Heat Treatment Inducing γ′-γ″ Co-Precipitates and η Phase on Tensile Behaviors of Inconel 706
Role of Stabilization Heat Treatment Inducing γ′-γ″ Co-Precipitates and η Phase on Tensile Behaviors of Inconel 706 Open
Inconel 706 (IN706) alloy is commonly used in aircraft engines and power plant components that must meet very high performance requirements. The stabilization treatment has a significant effect on the precipitation and evolution of the rei…
View article: Revealing the Superior Post-Necking Elongation in the Fine-Grained Ti-6Al-4V ELI at Cryogenic Temperature
Revealing the Superior Post-Necking Elongation in the Fine-Grained Ti-6Al-4V ELI at Cryogenic Temperature Open
The mechanical properties of a fine-grained (FG) Ti-6Al-4V extra-low interstitial (ELI) alloy were investigated by tensile tests at 298 K and 77 K. The experimental results indicated that, at 77 K, the alloy exhibits a small uniform elonga…
View article: Aging Treatment Induces the Preferential Crystallographic Orientation of αs in the Near-α Titanium Alloy Ti60
Aging Treatment Induces the Preferential Crystallographic Orientation of αs in the Near-α Titanium Alloy Ti60 Open
In this article, we subjected the Ti60 alloy to solid-solution treatment at 1020 °C and aging treatment at 600 °C, respectively, achieving a bimodal microstructure. The microstructures obtained after aging treatment showed no significant d…
View article: Mechanisms of Heat-Treatment-Induced Cracking in Additively Manufactured IN738 Alloy
Mechanisms of Heat-Treatment-Induced Cracking in Additively Manufactured IN738 Alloy Open
The present study conducts a comprehensive study on heat-treatment-induced cracking of Inconel 738 (IN738) alloy fabricated by laser powder bed fusion (LPBF) using scanning electron microscopy (SEM), energy dispersion spectrum (EDS), and e…
View article: Tensile Test Coupled with an EBSD Study of a GH4169 Ring Rolled Product
Tensile Test Coupled with an EBSD Study of a GH4169 Ring Rolled Product Open
An in situ tensile test of the ring-rolled GH4169 alloy is performed to investigate the plastic deformation behavior at the micro level. Slip system activations are identified by slip traces captured by a scanning electron microscope and l…
View article: Optimizing the Electrical and Mechanical Properties of Cu-Cr Alloys by Hf Microalloying
Optimizing the Electrical and Mechanical Properties of Cu-Cr Alloys by Hf Microalloying Open
Cu-0.4Cr (wt.%) alloys with the microalloying of Hf elements were subjected to a modified rolling–aging process to achieve high strength, high electrical conductivity and high ductility simultaneously. Transmission electron microscopy and …
View article: Micro Hierarchical Structure and Mechanical Property of Sparrow Hawk (Accipiter nisus) Feather Shaf
Micro Hierarchical Structure and Mechanical Property of Sparrow Hawk (Accipiter nisus) Feather Shaf Open
In this study, the real 3D model of the feather shaft that is composed of medulla and cortex is characterized by X-ray computer tomography, and the structural features are quantitatively analyzed. Compression and tensile tests are conducte…
View article: A nano-micro dual-scale particulate-reinforced copper matrix composite with high strength, high electrical conductivity and superior wear resistance
A nano-micro dual-scale particulate-reinforced copper matrix composite with high strength, high electrical conductivity and superior wear resistance Open
A nano Cu5Zr and micro ZrB2 dual-scale particulate-reinforced copper matrix composite is prepared by in situ synthesis and heat treatment, which has high strength, high electrical conductivity and superior wear resistance.
View article: The effect of rotating magnetic field on the microstructure of in situ TiB<sub>2</sub>/Cu composites
The effect of rotating magnetic field on the microstructure of in situ TiB<sub>2</sub>/Cu composites Open
Nano ceramic particulate reinforced metal matrix composites are confronted with the problem of particle aggregation emerging in the process of solidification. It sharply deteriorates the mechanical properties of the composites. In order to…
View article: A promising structure for fabricating high strength and high electrical conductivity copper alloys
A promising structure for fabricating high strength and high electrical conductivity copper alloys Open
To address the trade-off between strength and electrical conductivity, we propose a strategy: introducing precipitated particles into a structure composed of deformation twins. A Cu-0.3%Zr alloy was designed to verify our strategy. Zirconi…