A Quantitative Study of Precipitation of Metastable Phases in an Al-1.94 at%Cu Alloy during Isothermal Aging at 373 K

Son, S. K.; Takeda, M.; Park, Kyu-Seop; Mitome, Masanori; Bando, Yoshio; Nam, Ki-Woo; Kang, Chang-Yong

doi:10.2320/matertrans.47.3001

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…Recently, it has been applied to quantitative determination of small particle size distributions. 27,28 Energy filtered transmission electron microscopy has been used more than HAADF, and the development of efficient energy filters designed for TEM has now made EFTEM an important tool in materials science.…”

Section: Working Principle Of Eftemmentioning

confidence: 99%

Precipitation in maraging and martensitic chromium steels — what can we learn using 3-DAP and EFTEM

Stiller¹,

Andrén²,

Andersson³

2008

Materials Science and Technology

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Two complementary techniques for the characterisation of the fine scale microstructure of materials are briefly described: three-dimensional atom probe (3-DAP) analysis and energy filtered transmission electron microscopy (EFTEM). The 3-DAP is especially suited for the characterisation of clustering and of the chemistry and size of very small precipitates, in particular when several phases are present. Energy filtered transmission electron microscopy is useful for determining size, volume fraction and number density of precipitates in the approximate size range 20-200 nm, also when several phases are present. As examples of the usefulness of a combination of these techniques, results from two types of complex martensitic steels are reviewed: the sequence of precipitation in a high strength maraging steel, Nanoflex, and the microstructure of creep resistant 9-12%Cr steels.

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Section: Working Principle Of Eftemmentioning

confidence: 99%

Precipitation in maraging and martensitic chromium steels — what can we learn using 3-DAP and EFTEM

Stiller¹,

Andrén²,

Andersson³

2008

Materials Science and Technology

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Competing nucleation of single- and double-layer Guinier–Preston zones in Al–Cu alloys

Miyoshi

Kimizuka

Ishii

et al. 2021

Sci Rep

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Solid-state precipitation is a key heat-treatment strategy for strengthening engineering alloys. Therefore, predicting the precipitation process of localized solute-rich clusters, such as Guinier–Preston (GP) zones, is necessary. We quantitatively evaluated the critical nucleus size and nucleation barrier of GP zones in Al–Cu alloys, illustrating the precipitation preferences of single-layer (GP1) and double-layer (GP2) GP zones. Based on classical nucleation theory using an effective multi-body potential for dilute Al–Cu systems, our model predicted GP1 and GP2 precipitation sequences at various temperatures and Cu concentrations in a manner consistent with experimental observations. The crossover between formation enthalpy curves of GP1 and GP2 with increasing cluster size determines the critical conditions under which GP2 zones can nucleate without prior formation of GP1 zones. This relationship reflects competing interactions within and between clusters. The results illustrate the underlying mechanisms of competing nucleation between zones, and provide guidance for tailoring aging conditions to achieve desired mechanical properties for specific applications.

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Displacement fields around Guinier–Preston 1 zones in Al–Cu alloys: investigations using MD and ADF-STEM image simulations

Hamaoka

Takeguchi

2018

Philosophical Magazine

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A Quantitative Study of Precipitation of Metastable Phases in an Al-1.94 at%Cu Alloy during Isothermal Aging at 373 K

Cited by 6 publications

References 21 publications

Precipitation in maraging and martensitic chromium steels — what can we learn using 3-DAP and EFTEM

Precipitation in maraging and martensitic chromium steels — what can we learn using 3-DAP and EFTEM

Competing nucleation of single- and double-layer Guinier–Preston zones in Al–Cu alloys

Displacement fields around Guinier–Preston 1 zones in Al–Cu alloys: investigations using MD and ADF-STEM image simulations

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