Mechanical Properties and Microstructural Evolution in Al 2014 Alloy Processed Through Multidirectional Cryoforging

Joshi, Amit; Kumar, Nikhil; Yogesha, K. K.; Jayaganthan, R.; Nath, S. K.

doi:10.1007/s11665-016-2126-0

Cited by 57 publications

(26 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various researchers have reported the limitation of sample size according to ASTM standard for UFG materials in the determination of critical fracture toughness. Thus, the apparent fracture toughness was calculated in their work and correlated with the microstructure.…”

Section: Discussionmentioning

confidence: 99%

“…New theoretical and experimental techniques have made fracture toughness test feasible for bulk UFG materials irrespective of the dimension of the sample . Many researchers have investigated the influence of SPD on the fracture toughness of metallic material .…”

Section: Introductionmentioning

confidence: 99%

“…New theoretical and experimental techniques have made fracture toughness test feasible for bulk UFG materials irrespective of the dimension of the sample. 9,10 Many researchers have investigated the influence of SPD on the fracture toughness of metallic material. [11][12][13][14] After rolling of tungsten alloy at a true strain of (ε T = 5), the fracture toughness increased from 9 to 29 MPa.m 1/2.11 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Kumar

Owolabi

Jayaganthan

et al. 2018

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

In the present work, cryorolling (CR) and room temperature rolling (RTR) followed by annealing (AN) at 200°C were carried out to investigate the effects of grain size, precipitates (Mg‐Si‐phases), and AlFeMnSi‐phases on the fracture toughness of 6082 Al alloy. Using the values of the conditional fracture toughness, (KQ), in the critical fracture toughness (KIC) validation criteria, it was found that the sample size is inappropriate, which implies that the conditional fracture toughness obtained cannot be considered as the critical fracture toughness. Therefore, to establish the relative improvement in fracture toughness, the equivalent energy fracture toughness (Kee) and J‐integral were calculated and used. The results show that the values of Kee (89.91 MPa √m) and J (89.86 kJ/m2) obtained for the sample processed via CR followed by AN (CR + AN) are the highest when compared with the other samples processed through CR, RTR, and RTR followed by AN, RTR + AN. Microstructural features such as high fraction of low Taylor factor, high fraction of kernel average misorientation, Si‐rich particles, small size AlFeMnSi‐phases, and mixed mode of failure (transgranular shear and micro‐void coalescence) also support the high fracture toughness in the CR + AN sample. It was also observed that the effect of residual stresses on the fracture toughness of CR and RTR samples is minimal. Therefore, the correlation between microstructure and residual stresses is not considered in the present work due to very small values of the residual stresses for CR and RTR samples and the absence of residual stress from the heat‐treated samples.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Kumar

Owolabi

Jayaganthan

et al. 2018

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

show abstract

“…2014 aluminum alloy is an important structural material applied widely in the fields of aerospace and civil engineering, due to its high strength, good plasticity and high temperature stability [1] [2]. Also, this alloy has excellent forge ability and can be used for complex components such as aircraft joint with thin rib.…”

Section: Introductionmentioning

confidence: 99%

Quasi <i>In-Situ</i> Study on Microstructure Evolution of Al 2014 Alloy during Thermal Deformation and Following Solution Treatment

Cao¹,

Tian²,

Gu³

et al. 2019

MSCE

View full text Add to dashboard Cite

Microstructure evolution of 2014 aluminum alloy was studied by hot compression deformation at 410˚C to 470˚C and strain rates of 0.07 s −1 to 0.53 s −1 , to provide manufacturing references for aluminum plate. The deformation temperature and especially strain rate ranges were chosen very close to the actual processing condition. The results show that the stress-strain curves display a stable flow at the given deformation conditions, corresponding a dominant microstructure evolution behavior of dynamic recovery (DRV) and few dynamic recrystallization (DRX). After solution treated at 502˚C for 3 hours, quasi in-situ observation shows that static recrystallization (SRX) develop typical fine grains with several microns at grain boundaries, while static recovery (SRV) dominants the microstructure evolution during the soaking time, leading to a similar microstructure to that of the as-deformed. The average low angle grain boundaries (L AGBs) and high angle grain boundaries (H AGBs) display weak differences between as-deformed and solution treated specimens, which reveals a good thermal stability of microstructure for 2014 alloy. However, the deformation at the lower temperature has an obvious trend to induce SRX during solution soaking.

show abstract

“…In recent years the use of Al-alloys has been increasing in the fields of aerospace and automotive due to their excellent performance (e.g., high strength-to-weight ratio and great ductility) and rich reserves. 1 Because most of the crucial Al-alloy components operate under spectrum loading or variable amplitude cyclic loading where load history influences occur, overload (OL) influences on the subsequent crack-growth behavior have been widely studied from different points of view, 2,3 e.g., crack-tip blunting, 4 crack closure, 5 strain hardening, 6 crack branching, 7 and compressive residual stress. 8 The prevailing view on the trend of the variation in da/dN after a single tensile OL during a constant amplitude fatigue test is: initial acceleration, subsequent retardation and final recovery.…”

Section: Introductionmentioning

confidence: 99%

Trends in fatigue-crack growth for the 2024 Al-alloy after a single tensile overload

Zhang¹,

Lei²,

Liu³

et al. 2018

Mater. Tehnol.

View full text Add to dashboard Cite

A single tensile overload (OL) applied during a constant amplitude fatigue test could have a positive or negative influence on improving the subsequent fatigue-crack growth rate (da/dN). The resulting variation in da/dN was very relevant to both the OL level and the fatigue loading conditions. Comprehensive tests on 2024-T4 Al-alloy specimens were carried out to rationalize the variation trend of da/dN after a single tensile OL. It was found that the trend of the fatigue-crack growth after the OL is not unique, but strongly depends on the OL stress-intensity factor KOL and the applied stress-intensity factor Kapp just before OL. Three potential trends of variation in da/dN, related to both the KOL and the KOL/Kapp ratio, were proposed in this study: initial deceleration and then recovery (Type I); initial slight-acceleration, subsequent retardation and final recovery (Type II); and initial major-acceleration, subsequent retardation and final recovery (Type III). Among the three types, the type II with the medium KOL/Kapp ratio and the low Kapp is the optimal OL type for improving the fatigue life of a 2024-T4 Al-alloy specimen. Keywords: overload, fatigue crack growth trend, fatigue retardation, overload-induced fracture zone Med testom utrujanja s konstantno amplitudo so uporabili posamezen natezni preizkus s preobremenitvijo (OL; angl.: single tensile overload) ter ugotovili, da ima lahko le-ta pozitiven ali negativen vpliv na nadaljnjo hitrost rasti razpoke (da/dN). Nastala razlika v da/dN je bila tesno povezana tako z nivojem OL kot tudi s pogoji utrujanja. Avtorji~lanka so izvedli ob{irne preizkuse na vzorcih Al zlitine 2024-T4, da bi razumeli trend variiranja da/dN po OL. Ugotovili so, da trend hitrosti rasti razpoke po OL ni enoten, temve~je mo~no odvisen od razmerja OL-faktor intenzitete napetosti KOL in uporabljenega nivoja napetostnega faktorja intenzitete Kapp tik pred OL. V tej {tudiji so avtorji predlagali tri mo`ne trende variiranja da/dN glede na KOL in razmerje KOL/Kapp: za~etno zmanj{evanje hitrost (zaviranje) in nato popravo (Type I); za~etno rahlo pospe{evanje, odla{anje in nato popravo (Type II) in za~etno izrazito pospe{evanje, kateremu je sledilo odla{anje in kon~na poprava (Type III). Med vsemi tremi je tip II s srednjim KOL/Kapp razmerjem in nizkim Kapp optimalen OL tip za izbolj{anje dobe trajanja vzorcev iz Al zlitine 2024-T4. Klju~ne besede: preobremenitev, trend rasti utrujenostne razpoke, odla{anje utrujanja, s preobremenitvijo inducirana cona loma

show abstract

Mechanical Properties and Microstructural Evolution in Al 2014 Alloy Processed Through Multidirectional Cryoforging

Cited by 57 publications

References 43 publications

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Quasi <i>In-Situ</i> Study on Microstructure Evolution of Al 2014 Alloy during Thermal Deformation and Following Solution Treatment

Trends in fatigue-crack growth for the 2024 Al-alloy after a single tensile overload

Contact Info

Product

Resources

About

Mechanical Properties and Microstructural Evolution in Al 2014 Alloy Processed Through Multidirectional Cryoforging

Cited by 57 publications

References 43 publications

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Correlation of fracture toughness with microstructural features for ultrafine‐grained 6082 Al alloy

Quasi &lt;i&gt;In-Situ&lt;/i&gt; Study on Microstructure Evolution of Al 2014 Alloy during Thermal Deformation and Following Solution Treatment

Trends in fatigue-crack growth for the 2024 Al-alloy after a single tensile overload

Contact Info

Product

Resources

About

Quasi <i>In-Situ</i> Study on Microstructure Evolution of Al 2014 Alloy during Thermal Deformation and Following Solution Treatment