Impression creep behaviour of ultrasonically processed in-situ Al3Ti reinforced aluminium composite

Gupta, Rahul; Daniel, B.S.S.

doi:10.1016/j.msea.2018.07.017

Cited by 30 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus steady state creep strain rate is the minimum creep strain rate at a given stress and temperature. Impression creep behaviour of AA6061 alloy has already been studied in earlier works [6], [7]. Impression depth i.e., depth of indentation in "mm" has been plotted with respect to time.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

Khokhar

Khajuria

Bedi

2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Impression creep testing technique is used to screen out creep behaviour of materials as it is relatively faster method, requires small volume of the specimen, and is relatively material non-invasive technique when compared to conventional uniaxial tensile creep test method. This technique also possesses the benefit of maintaining constant stress throughout the experiment because a flat cylindrical indenter is used to apply load on the specimen. Owing to commercial unavailability of the materials under development such as metal matrix composites (MMC), the impression creep testing approach for such materials becomes a best method. In present work, creep behaviour of stir-cast graphene nanoplatelets (GNP) reinforced AA6061 composite (AMMC) is studied by using impression creep tests. The AMMC was prepared by adding GNPs in AA6061 through stir casting process by melting the alloy up to 1073 K. The impression creep experimentation included stress levels of 140 MPa, 170 MPa, and 200 MPa at a temperature of 573 K, 603 K and 633 K. The tests were conducted at constant stress by varying the temperature and vice-versa in vacuum. Two distinct regions i.e., primary and secondary/steady-state were observed and minimum creep strain rate was obtained in steady-state region. Tertiary region was absent, since the load/stress applied was compressive. During the experiment, depth of indentation of 0.03 mm to 0.14 mm was produced in the specimen. The microstructure of the composite has been analyzed using optical microscope and scanning electron microscope (SEM) to correlate with impression creep behaviour of the studied materials.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Impression creep curves of the AA6061 alloy tested under different stress levels at (a) 543K; (b) 573 K and (c) 603 K[6],[7] …”

mentioning

confidence: 99%

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

Khokhar

Khajuria

Bedi

2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…According to the grain refinement view, the Sr modification of eutectic silicon can optimize the alloy properties and improve its machinability and serviceability. Grain refinement methods include physical refinement, thermodynamic refinement, and chemical refinement [ 8 , 9 , 10 ]. The chemical refining methods commonly use the Al-Ti-B and Al-Ti-C master alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al-5Ti-0.25C-0.25B and Al-5Ti-1B Master Alloys on the Microstructure and Mechanical Properties of Al-9.5Si-1.5Cu-0.8Mn-0.6Mg Alloy

Wen

et al. 2023

Materials

View full text Add to dashboard Cite

The goal of this research was to determine how the master alloys Al-5Ti-0.25C-0.25B and Al-5Ti-1B affected the mechanical properties and structural characteristics of the alloy Al-9.5Si-1.5Cu-0.8Mn-0.6Mg. Field emission scanning electron microscopy (FE-SEM) was used to probe the microscopic composition, and the mechanical properties were evaluated using tensile testing. The results showed that, by adding 0.5% Al-5Ti-0.25C-0.25B master alloy and 0.5% Al-5Ti-1B master alloy, the α-Al dendrites can be significantly refined. In the extrusion state, the ultimate tensile strength and elongation with 0.5% Al-5Ti-0.25C-0.25B master alloy reached 380 MPa and 11.2%, which were 5.5% and 22.4% higher than no refinement, respectively. The elongation of the samples with the Al-5Ti-1B alloy addition increased from 9% to 11.9%, which is attributed to the fact that more pronounced complete recrystallization occurred during the extrusion heat treatment.

show abstract

“…16 Such data can also be used to generate constitutive laws for the welded material. 17,18 The main small-sized specimen and testing types that are used to obtain high-temperature creep properties including the conventional sub-sized uniaxial specimens 19 and several miniaturized types, including impression creep test, [20][21][22] small punch tensile, creep and fracture tests, [23][24][25][26][27] small ring creep test, [28][29][30] small tensile two-bar creep test 31 and the more recent miniature thin-plate (MTP) tensile test. 32 One of the unique advantages that small punch creep test has is the very small thickness ($0.5 mm); however, there is no universally accepted conversion technique available for data interpretation.…”

Section: Introductionmentioning

confidence: 99%

A miniaturized thin‐plate low cycle fatigue test method at elevated temperature

Maskill

Zhou

et al. 2022

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

This study aims to develop a high-temperature low cycle fatigue test method using a nonstandard miniature thin-plate specimen in order to characterize the cyclic viscoplasticity behavior of a component material. For demonstration, fully reversed strain-range controlled low cycle fatigue and creep-fatigue tests at 600 C have been performed for a martensitic steel using standard-sized fullscale specimens and miniaturized thin-plate specimens, respectively. Because the displacement is not directly measured from the uniform gauge section of the miniaturized specimen, a geometry-dependent scaling factor is obtained and used to convert the uniaxial strain. The results obtained are shown that the miniaturized test method developed in this work has exhibited a clear possibility to produce comparable low cycle fatigue data with those that are normally obtained by conventional standard specimen tests.

show abstract

Impression creep behaviour of ultrasonically processed in-situ Al3Ti reinforced aluminium composite

Cited by 30 publications

References 41 publications

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

An initial study on the impression creep behaviour of stir-cast GNP reinforced AA6061 composite (AMMC)

Effect of Al-5Ti-0.25C-0.25B and Al-5Ti-1B Master Alloys on the Microstructure and Mechanical Properties of Al-9.5Si-1.5Cu-0.8Mn-0.6Mg Alloy

A miniaturized thin‐plate low cycle fatigue test method at elevated temperature

Contact Info

Product

Resources

About