Dissolution Behavior and Dissolution Kinetics of the Laves Phase for Directed Energy Deposited Inconel 718 Alloy During Δ Aging and Solution Treatment DOI

Yiting Zhang,

Liangyun Lan,

Q.Q. Shi

et al.

Published: Jan. 1, 2024

In this study, δ aging and solution treatment were employed to eliminate Laves phase in Inconel 718 alloy fabricated by directed energy deposition. The effect of precipitated during the on dissolution behavior was revealed. Compared direct treatment, characteristic parameters (i.e., size volume fraction) Nb segregation degree are significantly deceased when is performed before treatment. composition morphology pre-precipitated crucial for dissolution. On one hand, formation (Ni3Nb) consumes numerous atoms γ matrix, which increases element concentration gradient at Laves/γ interface. other a large amount needle-like around decreases area As result, number diffusing through unit interfacial increased, enhances rate mass transfer interface accelerates phase. kinetics investigated using Johnson-Mehl-Avrami-Kolmogorov model, Singh-Flemings H.B. Aaron M.J. Whelan reaction model. model demonstrated that diffusion dominant mechanism transforms from long-striped shape blocky shape. However, clarified plays role phase, may be due decrease segregation.

Language: Английский

Deformation behavior and strengthening mechanisms of a novel powder metallurgy Ni-based superalloy during in-situ tensile testing DOI
Yanzhuo Liu, Lijia Chen,

Qianlong Ren

et al.

Materials Science and Engineering A, Journal Year: 2025, Volume and Issue: unknown, P. 147942 - 147942

Published: Jan. 1, 2025

Language: Английский

Citations

0
Enhancing mechanical and tribological properties of laser-based directed energy deposited IN718 alloy via synchronised high repetition laser shock peening DOI Creative Commons

Jiantao Zhou,

Qingpeng Chen, Xu Han

et al.

Virtual and Physical Prototyping, Journal Year: 2025, Volume and Issue: 20(1)

Published: April 2, 2025

Language: Английский

Citations

0
Directed energy deposition repair of dissimilar ultra-high strength steels: Martensite variant selection and dynamic deformation mechanism DOI

Xiaohu Guan,

Xiaohong Zhan,

Zhangping Hu

et al.

Materials Science and Engineering A, Journal Year: 2025, Volume and Issue: unknown, P. 148336 - 148336

Published: April 1, 2025

Language: Английский

Citations

0
Microstructural Evolution and Internal Hydrogen Content of Ultra-High-Strength Automotive Steels During Two Typical Industrial Production Flows DOI Open Access
Zhiyuan Chang, Jingjing Yin, Long Li

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(9), P. 2034 - 2034

Published: April 29, 2025

Hot stamping is a promising method to manufacture ultra-high-strength automotive steel components with high dimension accuracy. In this work, two actual industrial production flows (with and without Al-Si hot dipping) were investigated reveal their microstructural evolution hydrogen content at different steps. Meanwhile, the variations in composition phase structures of coating layer studied terms energy-dispersive spectrometry electron backscattering diffraction techniques. The results showed that microstructure substrate changed from pancake-shaped pearlite ferrite, degenerated annealed lath martensite, then tempered martensite progress steps, which was not affected by dipping. final exhibited multi-sublayer structure alternative distribution FeAl Fe2Al5, contained many microcracks on brittle Fe2Al5. Al-Si-coated specimens always had higher than bare because generation stage absorption during hot-dip aluminizing stage.

Language: Английский

Citations

0
Microstructures and High-Temperature Mechanical Properties of Inconel 718 Superalloy Fabricated via Laser Powder Bed Fusion DOI Open Access
Nan Li, Changshun Wang, Chenglin Li

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(15), P. 3735 - 3735

Published: July 28, 2024

The Inconel 718 superalloy demonstrates the potential to fabricate high-temperature components using additive manufacturing. However, additively manufactured typically exhibits low strength, necessitating post-heat treatments for precipitate strengthening. This study investigated microstructures and mechanical properties of fabricated via laser powder bed fusion. room-temperature tensile alloy samples following various were evaluated. results indicate that as-built exhibited columnar grains with fine cell structures. Solution treatment resulted in δ phase formation grain recrystallization. Subsequent double aging led finely distributed nanoscale γ′ γ″ particles. These particles provided high strength at both room temperatures, resulting a balanced ductility comparable wrought counterpart. High-temperature nanoindentation analyses revealed double-aging very hardness creep rates 650 °C.

Language: Английский

Citations

2
Dissolution Behavior of Laves Phase and Hardness Evolution for Direct Energy Deposited Inconel 718 Alloy with δ Aging and Solution Treatment DOI
Yiting Zhang, Liangyun Lan,

Quanqiang Shi

et al.

Metallurgical and Materials Transactions A, Journal Year: 2024, Volume and Issue: 55(12), P. 5051 - 5069

Published: Oct. 8, 2024

Language: Английский

Citations

2
Tailoring the Crystalline Structures and Mechanical Properties of IN718 Alloy Repaired by Wire-Fed Electron Beam Directed Energy Deposition through a Custom-Designed Heat Treatment Process DOI
Chunzhi Zhao, Liang Wang, Binbin Wang

et al.

Materials Science and Engineering A, Journal Year: 2024, Volume and Issue: unknown, P. 147274 - 147274

Published: Sept. 1, 2024

Language: Английский

Citations

1
The roles of P/B-addition in tailoring δ-phase-enhanced grain boundaries in a nickel-based superalloy DOI
Jing Wu,

G.J. Liao,

Changzhong Jiang

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 176484 - 176484

Published: Sept. 1, 2024

Language: Английский

Citations

1
Dissolution Behavior and Dissolution Kinetics of the Laves Phase for Directed Energy Deposited Inconel 718 Alloy During Δ Aging and Solution Treatment DOI

Yiting Zhang,

Liangyun Lan,

Q.Q. Shi

et al.

Published: Jan. 1, 2024

In this study, δ aging and solution treatment were employed to eliminate Laves phase in Inconel 718 alloy fabricated by directed energy deposition. The effect of precipitated during the on dissolution behavior was revealed. Compared direct treatment, characteristic parameters (i.e., size volume fraction) Nb segregation degree are significantly deceased when is performed before treatment. composition morphology pre-precipitated crucial for dissolution. On one hand, formation (Ni3Nb) consumes numerous atoms γ matrix, which increases element concentration gradient at Laves/γ interface. other a large amount needle-like around decreases area As result, number diffusing through unit interfacial increased, enhances rate mass transfer interface accelerates phase. kinetics investigated using Johnson-Mehl-Avrami-Kolmogorov model, Singh-Flemings H.B. Aaron M.J. Whelan reaction model. model demonstrated that diffusion dominant mechanism transforms from long-striped shape blocky shape. However, clarified plays role phase, may be due decrease segregation.

Language: Английский

Citations

0