A new phenomenological approach for modeling strain hardening behavior of face centered cubic materials

Mishra, Sumeet; Yadava, Manasij; Kulkarni, Kaustubh; Gurao, N.P.

doi:10.1016/j.actamat.2019.08.002

Cited by 27 publications

(8 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a face-centered cubic structured material, the deformation mode of the 316L austenitic stainless steel gradually changes from planar slip to cross slip with increasing strain, causing saturated dislocation tangles, which may exhaust the strain hardening capability [36]. On the other hand, the thermally activated process could intensify at a higher temperature, as reflected by the enlargement of the cleavage area in Figure 4; that is, the strain hardening capability could be more easily consumed, resulting in a faster burst fracture [37]. cubic structured material, the deformation mode of the 316L austenitic stainless steel gradually changes from planar slip to cross slip with increasing strain, causing saturated dislocation tangles, which may exhaust the strain hardening capability [36].…”

Section: Resultsmentioning

confidence: 99%

“…cubic structured material, the deformation mode of the 316L austenitic stainless steel gradually changes from planar slip to cross slip with increasing strain, causing saturated dislocation tangles, which may exhaust the strain hardening capability [36]. On the other hand, the thermally activated process could intensify at a higher temperature, as reflected by the enlargement of the cleavage area in Figure 4; that is, the strain hardening capability could be more easily consumed, resulting in a faster burst fracture [37].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Analysis on the Temperature- Dependent Burst Behavior of Domed 316L Austenitic Stainless Steel Rupture Disc

Zhu

Wei-pu

Luo

et al. 2020

Metals

View full text Add to dashboard Cite

As a safety device, a rupture disc instantly bursts as a nonreclosing pressure relief component to minimize the explosion risk once the internal pressure of vessels or pipes exceeds a critical level. In this study, the influence of temperature on the ultimate burst pressure of domed rupture discs made of 316L austenitic stainless steel was experimentally investigated and assessed with finite element analysis. Experimental results showed that the ultimate burst pressure gradually reduced from 6.88 MPa to 5.24 MPa with increasing temperature from 300 K to 573 K, which are consistent with the predicted instability pressures acquired by nonlinear buckling analysis using ABAQUS software. Additionally, it was found that a gradual transition from opening ductile mode to cleavage mode happened with increasing temperature due to more cross slips occurring under serious plastic deformation. The equivalent stress, equivalent strain and strain hardening rates acquired by static analysis were effective at rationalizing the temperature-dependent fracture behavior of the domed rupture discs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Finite Element Analysis on the Temperature- Dependent Burst Behavior of Domed 316L Austenitic Stainless Steel Rupture Disc

Zhu

Wei-pu

Luo

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…When particle shearing occurs, dislocation shearing reduces the effective size of the precipitates as follows 16 , 26 , 30 , 43 , where n is the number of shearing dislocations. In other words, each shearing reduces the effective radius of the precipitates, which helps the following dislocations shear the precipitates on the same slip plane (known as “glide plane softening”) 2 , 3 , 6 , 7 , 9 , 11 , 14 – 16 , 18 .…”

Section: Discussionmentioning

confidence: 99%

“…Recently, the SASH model 26 was proposed to quantitatively interpret the strain hardening recovery. It comprehensively interprets the strain hardening recovery behavior of twinning-induced plasticity (TWIP) steels and precipitation-hardened Ni alloys by considering the three dominating factors: forest dislocation density, orientation factor (M"), and dislocation mean free path (mobile dislocation density).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, a sharp decrease in the dislocation mean free path (L) during the activation of the secondary slip systems is the primary reason for the strain hardening recovery. Recently, the slip activity-based strain hardening (SASH) model 26 was proposed, considering the strain-dependent orientation factor, which spans from the lower-bound iso-stress Sachs model to the upper-bound iso-strain Taylor model. The SASH model successfully predicts the strain hardening recovery in polycrystalline metals with the presence of shearable precipitates, supporting that strain hardening recovery is a result of the planar slip-induced sequential activation of the slip systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strain hardening recovery mediated by coherent precipitates in lightweight steel

Kim

Park

Jang

et al. 2021

Sci Rep

View full text Add to dashboard Cite

We investigated the effect of κ-carbide precipitates on the strain hardening behavior of aged Fe–Mn-Al-C alloys by microstructure analysis. The κ-carbides-strengthened Fe–Mn-Al-C alloys exhibited a superior strength-ductility balance enabled by the recovery of the strain hardening rate. To understand the relation between the κ-carbides and strain hardening recovery, dislocation gliding in the aged alloys during plastic deformation was analyzed through in situ tensile transmission electron microscopy (TEM). The in situ TEM results confirmed the particle shearing mechanism leads to planar dislocation gliding. During deformation of the 100 h-aged alloy, some gliding dislocations were strongly pinned by the large κ-carbide blocks and were prone to cross-slip, leading to the activation of multiple slip systems. The abrupt decline in the dislocation mean free path was attributed to the activation of multiple slip systems, resulting in the rapid saturation of the strain hardening recovery. It is concluded that the planar dislocation glide and sequential activation of slip systems are key to induce strain hardening recovery in polycrystalline metals. Thus, if a microstructure is designed such that dislocations glide in a planar manner, the strain hardening recovery could be utilized to obtain enhanced mechanical properties of the material.

show abstract

Tensile Deformation Modeling of a Homogenized Cast Alloy 625: Effects of Large Grain Size

Godasu

Mishra

Prakash

et al. 2022

Metall Mater Trans A

View full text Add to dashboard Cite

A new phenomenological approach for modeling strain hardening behavior of face centered cubic materials

Cited by 27 publications

References 44 publications

Finite Element Analysis on the Temperature- Dependent Burst Behavior of Domed 316L Austenitic Stainless Steel Rupture Disc

Finite Element Analysis on the Temperature- Dependent Burst Behavior of Domed 316L Austenitic Stainless Steel Rupture Disc

Strain hardening recovery mediated by coherent precipitates in lightweight steel

Tensile Deformation Modeling of a Homogenized Cast Alloy 625: Effects of Large Grain Size

Contact Info

Product

Resources

About