Creep and creep fracture of polycrystalline copper

Wilshire, B.; Battenbough, Alun

doi:10.1016/j.msea.2006.08.094

Cited by 154 publications

(190 citation statements)

References 17 publications

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“…(23)- (25) permitted effective rationalisation and extended extrapolation of the time to fracture, t f , the minimum creep rate, έ m and the time to certain strains, t ε , data for 1Cr-1Mo-0.25 V steel, despite the tempering of the as received bainitic microstructure and the occurrence of a gradual transition from transgranular to intergranular fracture during creep exposure. In another study, Wilshire and Battenbough [58] proved that the stress and temperature dependences of έ m and t f were best described using Eqs. (24) and (25) when they used this technique on polycrystalline copper.…”

Section: Review Of the Wilshire Equations Methodsmentioning

confidence: 99%

“…Superimposition can also be achieved using the yield strength, σ y , but the data fit is usually poorer since the value of σ y is more difficult to be measured precisely than σ TS [58]. Therefore, by selecting σ TS values for such purposes, property comparisons for different metals and alloys can be significantly simplified [5,6].…”

Section: Review Of the Wilshire Equations Methodsmentioning

confidence: 99%

“…As with the representation of stress rupture properties through Eq. (24), the stress and temperature dependences of έ m can be described using [5,6,58]:…”

Section: Review Of the Wilshire Equations Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Creep Lifing Models and Techniques

Abdallah¹,

Perkins²,

Arnold³

2018

Creep

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The deformation of structural alloys presents problems for power plants and aerospace applications due to the demand for elevated temperatures for higher efficiencies and reductions in greenhouse gas emissions. The materials used in such applications experience harsh environments which may lead to deformation and failure of critical components. To avoid such catastrophic failures and also increase efficiency, future designs must utilise novel/improved alloy systems with enhanced temperature capability. In recognising this issue, a detailed understanding of creep is essential for the success of these designs by ensuring components that do not experience excessive deformation which may ultimately lead to failure. To achieve this, a variety of parametric methods have been developed to quantify creep and creep fracture in high temperature applications. This study reviews a number of well-known traditionally employed creep lifing methods with some more recent approaches also included. The first section of this paper focuses on predicting the long-term creep-rupture properties which is an area of interest for the power generation sector. The second section looks at pre-defined strains and the re-production of full creep curves based on available data which is pertinent to the aerospace industry where components are replaced before failure.

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Section: Review Of the Wilshire Equations Methodsmentioning

confidence: 99%

Section: Review Of the Wilshire Equations Methodsmentioning

confidence: 99%

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Creep Lifing Models and Techniques

Abdallah¹,

Perkins²,

Arnold³

2018

Creep

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“…Power-law analysis of polycrystalline copper with n = 1, 4.5 [36]. Conducting power law analysis using the minimum creep rate, έ m , two distinct creep regimes can be observed in Figure 2 with n = 1 and n = 4.5 and Q c = 110 kJ/mol.…”

Section: à4mentioning

confidence: 99%

“…To demonstrate the application of the Wilshire Equations with respect to the power-law, the example of polycrystalline pure copper is first considered [9,36].…”

Section: Yield Behaviour Of Polycrystalline Coppermentioning

confidence: 99%

A Modern Philosophy for Creep Lifing in Engineering Alloys

Whittaker¹,

Gray²,

Harrison³

2018

Creep

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Lifing of components which are likely to be subject to high temperature creep deformation is a critical area to a range of industries, particularly power generation and aerospace. In particular, extrapolation of short term data to predict long-term allowable creep stresses is an area of significant importance, since no appropriate method of accelerating tests has been discovered. Traditional methods for extrapolation are mainly based around power law type equations that have historically formed the basis of creep mechanism understanding. The current chapter however, seeks to offer alternative approaches in the field, particularly emphasising the need to link lifing approaches to observable micro-mechanical behaviour.

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Importance of a Unified Model of High‐Temperature Material Behavior

2022

Engineering Physics of High‐Temperature Materials

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Creep and creep fracture of polycrystalline copper

Cited by 154 publications

References 17 publications

Creep Lifing Models and Techniques

Creep Lifing Models and Techniques

A Modern Philosophy for Creep Lifing in Engineering Alloys

Importance of a Unified Model of High‐Temperature Material Behavior

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