Effect of Tempering and Rolling on Fatigue Crack Growth Behavior of Modified 9Cr-1Mo Steel

Samant, S. S.; Singh, I.V.; Singh, R.N.

doi:10.1007/s11665-018-3700-4

Cited by 7 publications

(2 citation statements)

References 36 publications

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“…3 2 (18) where P is the load, B is thickness, W is the width of the specimen, and a is the crack length, f (s) is called as the compliance function.…”

Section: Compact Tension Testmentioning

confidence: 99%

“…Many numerical and analytical methods have been developed by researchers to predict and analyze the initial stages of crack growth in metallic materials [12][13][14][15][16][17][18]. Stress intensity factor and J integral are two of the parameters used in fracture mechanics to determine the structural part's performance in the presence of a crack.…”

Section: Introductionmentioning

confidence: 99%

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XFEM Simulation of Tensile and Fracture Behavior of Ultrafine-Grained Al 6061 Alloy

Gairola

Jayaganthan

2021

Metals

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In the present work, the tensile and fracture behavior of ultra-fine grained (UFG) Al 6061 alloy was simulated using extended finite element method (XFEM). UFG Al 6061 alloy processed by cryorolling (CR) and accumulative roll bonding (ARB) was investigated in this work. Numerical simulations of two-dimensional and three-dimensional models were performed in “Abaqus 6.14” software using an elastic-plastic approach, and the results obtained were validated with the experimental results. The specimens corresponding to the three-point bend test, compact tension test with center crack, and double edge cracks were analyzed using XFEM (eXtended Finite Element Method) approach. In XFEM, the partition of unity (PU) was used to model a crack in the standard finite element mesh. The tensile and fracture properties obtained from the simulation were in tandem with the experimental data. UFG Al alloy showed higher tensile strength and fracture toughness compared to their bulk solution treated counterparts. Fracture toughness was measured in terms of stress intensity factor and J integral. In CR Al alloys, with increasing thickness reduction, an increase in stress intensity factor and a decrease in the J integral was observed. This behavior is attributed to the increase in strength and decrease in ductility of CR samples with increasing thickness reduction. In ARB Al alloys, the strength and ductility have increased with an increase in number of cycles. It also revealed an increase in both the stress intensity factor and J integral in ARB processed Al alloys with increase in number of cycles, as evident from XFEM simulation results.

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“…3 2 (18) where P is the load, B is thickness, W is the width of the specimen, and a is the crack length, f (s) is called as the compliance function.…”

Section: Compact Tension Testmentioning

confidence: 99%