4.7 Article

Promoted phase transformation of a2 to O in Ti2AlNb alloy with improved mechanical performance via laser shock peening

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Materials Science, Multidisciplinary

In-situ observation of microcrack initiation and damage nucleation modes on the HAZ of laser-welded DP1180 joint

Junliang Xue et al.

Summary: In-situ SEM is used to observe microstructural and microcrack changes in the deformation process. This paper discusses the microstructural evolution, mechanical properties, and damage nucleation modes of DP1180 laser welded joints using TEM, FIB, and in-situ tensile test. The mechanical properties of tempered martensite in the sub-critical heat affected zone (SCHAZ) were deteriorated due to the precipitation of carbides and disappearance of dislocations tangles, resulting in slight decrease in microhardness (approximately 27HV) and the development of a softened zone. Microcracks initiated from tempered martensite in the SCHAZ while microcrack initiation of the base material occurred at the ferrite/martensite interface. Tempered martensite cracking was the dominant damage nucleation mode in the joint, while ferrite/martensite interface decohesion was the dominant mode in the base material.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2023)

Article Materials Science, Multidisciplinary

Improvement mechanism in stress corrosion resistance of the X70 pipeline steel in hydrogen sulfide solution by massive laser shock peening treatment

Zhao Wang et al.

Summary: The effects of MLSPT on the microstructural evolution and stress corrosion behavior of X70 pipeline steel in hydrogen sulfide solutions were investigated, and it was found that MLSPT can generate nanocrystallines and refined microstructures in the near-surface layer, significantly improving stress corrosion crack resistance.

CORROSION SCIENCE (2022)

Article Materials Science, Multidisciplinary

Deformation-induced phase transition and nanotwins in SS 304 steel during cryogenic laser shock peening without coating

M. V. Nataraj et al.

Summary: The influence of Laser shock peening without coating at a cryogenic temperature (CLPwC) on SS 304 alloy was investigated. The study found that laser shock peening leads to changes in residual stress, surface roughness, hardness, phase transformation and microstructural changes. XRD, EBSD and TEM techniques revealed the presence of strain-induced martensitic phase and other deformation features.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2022)

Article Engineering, Manufacturing

Microstructural evolution and tensile property enhancement of remanufactured Ti6Al4V using hybrid manufacturing of laser directed energy deposition with laser shock peening

Haifei Lu et al.

Summary: This study investigates the effects of interlayer laser shock peening treatment on the microstructural evolution and mechanical performance of Ti6Al4V alloy. The results show that this treatment significantly improves the microhardness and tensile property of the material by inhibiting the epitaxial growth of columnar grains and forming fine equiaxed grains.

ADDITIVE MANUFACTURING (2022)

Article Materials Science, Multidisciplinary

Particle size effects on dislocation density, microstructure, and phase transformation for high-entropy alloy powders

Sangho Jeon et al.

Summary: The study demonstrates that with decreasing particle size, the grain boundary length increases, leading to a linear increase in dislocation density. The grain boundary energy acts as a driving force for the metastable to stable phase transformation of AlCrFe2Ni2 alloy, indicating that the phase transformation kinetics is dependent on particle size.

MATERIALIA (2021)

Article Materials Science, Multidisciplinary

Composition and temperature dependence of α2 phase decomposition in high Nb-containing lamellar γ-TiAl alloys: Experiments and first-principles calculations

Cheng-ren Dai et al.

Summary: This paper investigates the decomposition process of the alpha(2) phase into the nano-sized orthorhombic (O) phase and blocky omega(0) phase in high Nb-containing γ-TiAl alloys at different temperatures. The study reveals that the transformation of O phase is controlled by Nb diffusion, while the formation of omega(0) phase is also related to Nb element. The pseudo-binary phase diagram accurately predicts the phase transformations in the alloys, providing insights for designing high Nb-containing γ-TiAl alloys.

ACTA MATERIALIA (2021)

Article Chemistry, Physical

Martensitic transformation in temporally shaped femtosecond laser shock peening 304 steel

Yiling Lian et al.

Summary: Laser shock peening with temporally shaped femtosecond laser pulses was applied to strengthen 304 stainless steel, showing over 20% improvement in hardness. The mechanism was revealed through theoretical models and experimental techniques, providing insight into electron dynamics control for structural transformation and surface strengthening in various material systems.

APPLIED SURFACE SCIENCE (2021)

Article Materials Science, Multidisciplinary

Improvement in oxidation resistance of Ti2AlNb alloys at high temperatures by laser shock peening

Dongsheng He et al.

Summary: Laser shock peening (LSP) was utilized to enhance the oxidation resistance of Ti2AlNb-based alloys at high temperatures by generating high-density dislocations and finer grains, leading to increased microhardness and compressive residual stress. The improvements in oxidation resistance were attributed to the formation of Al-rich oxidation layers facilitated by microstructural changes.

CORROSION SCIENCE (2021)

Article Materials Science, Multidisciplinary

Combining manufacturing of titanium alloy through direct energy deposition and laser shock peening processes

Jiaxuan Chi et al.

Summary: The combined manufacturing of direct energy deposition (DED) and laser shock peening (LSP) shows great potential in repairing titanium alloy components and improving their mechanical properties. This study evaluated the effects of LSP on microstructures, residual stress, and tensile properties of DEDed samples, finding that LSP induces a high-level compressive residual stress state and microstructure refinement, leading to an improvement in ultimate tensile strength.

MATERIALS & DESIGN (2021)

Review Materials Science, Multidisciplinary

Phase transformation and microstructure control of Ti2AlNb-based alloys: A review

Hongyu Zhang et al.

Summary: This paper reviews the precipitation mechanisms of O phase, phase transformation, and microstructure control of Ti2AlNb-based alloys. The O precipitates can be derived from various heat treatment processes, and the microstructural control can be implemented by refining the original grains and regulating the O precipitates.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

Article Nanoscience & Nanotechnology

Martensitic transformation induced dislocation walls in Fe42Mn38Co10Cr10 high-entropy alloy

L. Qi et al.

Summary: This study characterized two types of previously unreported dislocation walls in a high-entropy alloy, showing the importance of these structures in strain hardening and plastic accommodation. The walls are constituted by specific types of partial dislocations and play a significant role in dislocation-interface interactions.

SCRIPTA MATERIALIA (2021)

Article Chemistry, Physical

Thermal stability and mechanical properties of Ti-22Al-25Nb alloy with different initial microstructures

Yong Huang et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

Article Engineering, Manufacturing

3D laser shock peening - A new method for improving fatigue properties of selective laser melted parts

Nikola Kalentics et al.

ADDITIVE MANUFACTURING (2020)

Article Chemistry, Physical

lEffect of the primary O phase on thermal deformation behavior of a Ti2AlNb-based alloy

Hongyu Zhang et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

Article Engineering, Mechanical

Plastic deformation mechanism and interaction of B2, α2, and O phases in Ti-22Al-25Nb alloy at room temperature

Bin Shao et al.

INTERNATIONAL JOURNAL OF PLASTICITY (2019)

Article Engineering, Industrial

Laser shock peening: A promising tool for tailoring metallic microstructures in selective laser melting

N. Kalentics et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2019)

Article Materials Science, Multidisciplinary

Characterization of the prior particle boundaries in a powder metallurgy Ti2AlNb alloy

Jinhu Zhang et al.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2019)

Article Materials Science, Multidisciplinary

Orthorhombic phase formation in a Nb-rich γ-TiAl based alloy - An in situ synchrotron radiation investigation

Marcus Willi Rackel et al.

ACTA MATERIALIA (2016)

Article Materials Science, Multidisciplinary

Investigation of the phase transformations in Ti-22Al-25Nb alloy

Bin Shao et al.

MATERIALS CHARACTERIZATION (2016)

Article Nanoscience & Nanotechnology

Microstructural evolution and tensile behavior of Ti2AlNb alloys based α2-phase decomposition

Wei Wang et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2016)

Article Nanoscience & Nanotechnology

Deformation induced face-centered cubic titanium and its twinning behavior in Ti-6Al-4V

Y. G. Liu et al.

SCRIPTA MATERIALIA (2016)

Article Materials Science, Multidisciplinary

Fatigue behaviors of AISI 316L stainless steel with a gradient nanostructured surface layer

H. W. Huang et al.

ACTA MATERIALIA (2015)

Article Materials Science, Multidisciplinary

Microstructure Design and Heat Response of Powder Metallurgy Ti2AlNb Alloys

Jie Wu et al.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2015)

Article Nanoscience & Nanotechnology

The enhanced tensile property by introducing bimodal size distribution of lamellar O for O+B2 Ti2AlNb based alloy

Xue Chen et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2013)

Article Materials Science, Multidisciplinary

The mechanisms of thermal engineered laser shock peening for enhanced fatigue performance

Yiliang Liao et al.

ACTA MATERIALIA (2012)

Article Materials Science, Multidisciplinary

Investigation of plastic deformation heterogeneities in duplex steel by EBSD

S. Wronski et al.

MATERIALS CHARACTERIZATION (2012)

Article Materials Science, Multidisciplinary

Grain refinement mechanism of multiple laser shock processing impacts on ANSI 304 stainless steel

J. Z. Lu et al.

ACTA MATERIALIA (2010)

Article Materials Science, Multidisciplinary

Quantification of plastic strain of stainless steel and nickel alloy by electron backscatter diffraction

M Kamaya et al.

ACTA MATERIALIA (2006)

Article Materials Science, Multidisciplinary

Strain-induced grain refinement of cobalt during surface mechanical attrition treatment

X Wu et al.

ACTA MATERIALIA (2005)

Article Chemistry, Physical

Deformation mechanisms in the O phase

TK Nandy et al.

INTERMETALLICS (2000)