Microstructure Characteristics and Comparative Analysis of Constitutive Models for Flow Stress Prediction of Inconel 718 Alloy

Mahalle, Gauri; Kotkunde, Nitin; Gupta, Amit Kumar; Sujith, R. I.; Singh, Swadesh Kumar; Lin, Y.C.

doi:10.1007/s11665-019-04116-w

Cited by 36 publications

(12 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This serrated yielding phenomenon is generally characterized by Portevin-Le Chatelier effect. 26 A sudden increase in the flow stress followed by a drop-in flow stress value below mean flow stress level in σ–ε curve is defined as serration. Rodriguez 38 classified the serrated flow behavior in different types.…”

Section: Resultsmentioning

confidence: 99%

“…Similar reports on serration flow behavior of alloy were reported in literature. 26,39 The post-necking hardening curve has been weighted by Hollomon’s Equation. Figure 12(b) give the calibrated stress strain-curve by Hollomon equation up to the end of deformation region.…”

Section: Resultsmentioning

confidence: 99%

“…Test was interrupted after the yielding (about 15% elongation), considerably before UTS. Detailed experimental details and discussion on material specially anisotropic properties determination were reported in previous work published by Mahalle et al [24][25][26][27] Yoshida buckling test (YBT)…”

Section: Uniaxial Tensile Testmentioning

confidence: 99%

“…Tables 2 to 4 give the material and for Inconel 718 alloy considered as input to FE simulation. These material properties were already evaluated at various test conditions and reported by Mahalle et al 24,26,27 The physical properties of alloy were taken from the literature. 3,31 Hill’48 anisotropic plastic potential has been selected as material model in the numerical simulation, the anisotropic input parameters were calculated using below equations,…”

Section: Finite Element (Fe) Analysismentioning

confidence: 99%

See 3 more Smart Citations

An integrated experimental and finite element approach for wrinkling limit prediction of Inconel 718 alloy at elevated temperatures

Mahalle

Kotkunde

Gupta

et al. 2021

The Journal of Strain Analysis for Engineering Design

Self Cite

View full text Add to dashboard Cite

Wrinkling is generally induced because of metal instability and considered as an undesirable defect in sheet metal forming processes. Wrinkling leads to severe influence on functional requirements and aesthetic appeal of final component. Thus, the present research is mainly dedicated on the experimental and numerical analysis for wrinkling behavior prediction of Inconel 718 alloy at elevated temperature conditions. Initially, Yoshida buckling tests (YBT) have been conducted to investigate wrinkling tendencies of Inconel 718 alloy from room temperature (RT) to 600°C by an interval of 200°C. Subsequently, Finite Element (FE) analysis of YBT has been performed to analyze post buckling behavior. Critical strain values at onset of wrinkling are determined and strain based wrinkling limit curves (ε-WLCs) are plotted at different temperatures. In-plane principal strains are transferred to effective plastic strain (EPS) versus triaxiality (η) space to differentiate the transformation between safe and wrinkling instability. Finally, complete forming behavior of alloy is represented by means of fracture, forming, and wrinkling limit curves. The gap between forming and wrinkling limit curves at elevated temperature is ∼1.5 times higher than that at room temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Uniaxial Tensile Testmentioning

confidence: 99%

Section: Finite Element (Fe) Analysismentioning

confidence: 99%

See 2 more Smart Citations

An integrated experimental and finite element approach for wrinkling limit prediction of Inconel 718 alloy at elevated temperatures

Mahalle

Kotkunde

Gupta

et al. 2021

The Journal of Strain Analysis for Engineering Design

Self Cite

View full text Add to dashboard Cite

show abstract

“…This can be related to the observed grain refinement. Therefore, it is interesting to relate the hardness to the average grain size (d) by the well-known Hall-Petch plot [35][36][37], which is shown in Figure 3(g) and resulted in the following relationship…”

Section: Hot Rollingmentioning

confidence: 99%

Effects of hot rolling and homogenisation treatment on low alloy steel ingot

Baharvand

Zanganeh

Mirzadeh

et al. 2020

Materials Science and Technology

View full text Add to dashboard Cite

The effects of hot rolling and homogenisation treatment on the microstructure and mechanical properties of low-alloy transformation-induced plasticity (TRIP) steel were studied. With increasing the reduction in thickness during rolling, the band spacing and the average ferrite grain size decreased with the consequent enhancement of mechanical properties. Homogenisation treatment resulted in the gradual fading of the banded morphology, more homogeneous microhardness profile, and twice total elongation compared to the as-cast counterpart. The experimentally observed homogenisation time judged by the disappearance of the banded structure was in agreement with the obtained values based on the band spacing and elemental analysis. This work provided scientific evidence for the assumptions used to derive the homogenisation formulae.

show abstract