Category: Small Punch

Nickel, Small Punch, Superalloys

Deformation mechanisms of IN713C nickel based superalloy during Small Punch Testing

The role of local microstructure is critical in materials performance and integrity in a cast alloy. The grain size and grain boundary distributions as well as local texture can create various microstructure/microtexture clusters that cause deformation localisation in the alloy. Inconel 713C nickel base superalloys are used as turbocharger turbine wheels for modern diesel engines, produced via investment casting. In such an alloy localised deformation … Continue reading Deformation mechanisms of IN713C nickel based superalloy during Small Punch Testing

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Creep, Small Punch, Titanium

An Analysis of Small Punch Creep Behaviour in the Gamma Titanium Aluminide Ti-45Al-2Mn-2Nb

Previous literature on gamma titanium alumindes(γ-TiAl) have found that this family of alloys offer significant potential for replacing more conventional nickel and titanium based alloy systems in future designs of gas turbine engines. Despite the inherent brittle nature of such materials, γ-TiAl typically exhibits considerable ductility at elevated temperatures and a demonstrable uniaxial creep response. Until now, the creep properties of γ-TiAl have primarily been sourced from conventional uniaxial approaches, … Continue reading An Analysis of Small Punch Creep Behaviour in the Gamma Titanium Aluminide Ti-45Al-2Mn-2Nb

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Creep, Nickel, Small Punch, Superalloys

Elevated Temperature Creep Deformation of a Single Crystal Superalloy through the Small Punch Creep Method

Small punch testing is now a widely recognised approach for obtaining useful mechanical property information of critical structural components, particularly in the nuclear industry. However, to date the utilisation of this method has been limited to isotropic materials such as aluminium alloys and steels.This paper will look to utilise the small punch(SP) test to assess the creep response of 〈001〉-orientated CMSX-4 at temperatures above 950°C. An orthogonal rafting … Continue reading Elevated Temperature Creep Deformation of a Single Crystal Superalloy through the Small Punch Creep Method

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Creep, Nickel, Small Punch, Superalloys

Creep Lifing Methodologies applied to a single crystal superalloy by use of small scale test techniques

In recent years,advances in creep data interpretation have been achieved either by modified Monkman–Grant relationships or through the more contemporary Wilshire equations, which offer the opportunity of predicting long term behaviour extrapolated from short term results. Long term lifing techniquesprove extremely useful in creep dominated applications, such as in the power generation industry and in particular nuclear where large static loads are applied, equally a reduction in … Continue reading Creep Lifing Methodologies applied to a single crystal superalloy by use of small scale test techniques

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Small Punch, Titanium

Structural Integrity of an Electron Beam Melted Titanium Alloy

Advanced manufacturing encompasses the wide range of processes that consist of “3D printing” of metallic materials. One such method is Electron Beam Melting (EBM), a modern build technology that offers significant potential for lean manufacture and a capability to produce fully dense near-net shaped components. However, the manufacture of intricate geometries will result in variable thermal cycles and thus a transient microstructure throughout, leading to a highly textured structure. … Continue reading Structural Integrity of an Electron Beam Melted Titanium Alloy

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