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- Publications
- Influence
Stress dependence of the hysteresis in single crystal NiTi alloys
- R. Hamilton, H. Sehitoglu, Y. Chumlyakov, H. Maier
- Materials Science
- 21 June 2004
Abstract We demonstrate the variation in thermal hysteresis with increasing external stress for reversible martensitic transformations. The hysteresis was measured in temperature cycling experiments… Expand
Tension–compression asymmetry of the stress–strain response in aged single crystal and polycrystalline NiTi
- K. Gall, H. Sehitoglu, Y. Chumlyakov, I. Kireeva
- Materials Science
- 10 March 1999
Abstract The purpose of this work is to thoroughly understand tension–compression asymmetry in precipitated NiTi using unique experimental results and micro-mechanical modeling. For the first time,… Expand
Modeling of cyclic ratchetting plasticity, part i: Development of constitutive relations
- Yanyao Jiang, H. Sehitoglu
- Materials Science
- 1 September 1996
The existing plasticity models recognize that ratchetting direction strongly depends on the loading path, the stress amplitude, and the mean stresses, but their predictions deviate from experiments… Expand
On the finite element analysis of fatigue crack closure—1. Basic modeling issues
- R. Mcclung, H. Sehitoglu
- Engineering, Materials Science
- 1989
Abstract A model for the elastic-plastic finite element simulation of fatigue crack growth and crack closure is presented and evaluated. Results show that careful attention must be given to a series… Expand
The role of texture in tension–compression asymmetry in polycrystalline NiTi
- K. Gall, H. Sehitoglu
- Materials Science
- 1 March 1999
The purpose of the present study is to thoroughly understand the stress–strain behavior of polycrystalline NiTi deformed under tension versus compression. To do this, a micro-mechanical model is used… Expand
Energy of slip transmission and nucleation at grain boundaries
- M. Sangid, T. Ezaz, H. Sehitoglu, I. Robertson
- Materials Science
- 2011
Abstract Grain boundaries (GBs) provide a strengthening mechanism in engineering materials by impeding dislocation motion. In a polycrystalline material, there is a wide distribution of GB types with… Expand
Deformation of single crystal hadfield steel by twinning and slip
- I. Karaman, H. Sehitoglu, K. Gall, Y. Chumlyakov, H. Maier
- Materials Science
- 2 April 2000
Abstract The stress–strain behavior of Hadfield steel (Fe, 12.34 Mn, 1.03 C, in wt%) single crystals was studied for selected crystallographic orientations ( [ 1 11] , [001] and [ 1 23] ) under… Expand
Modeling of cyclic ratchetting plasticity, Part II: Comparison of model simulations with experiments
- Yanyao Jiang, H. Sehitoglu
- Materials Science
- 1 September 1996
The material constants of the new plasticity model proposed in the first part of the paper can be divided into two independent groups. The first group, c (i) and r (i) (i = 1, 2,..., M), describes… Expand
Modeling of plane strain fatigue crack closure
- H. Sehitoglu, W. Sun
- Materials Science
- 1991
A mechanism based on out-of-plane plastic strain component, e z p , in plane strain is shown not to be adequate in explaining closure. In the second model, partial relief of compressive stresses in… Expand
Predicting twinning stress in fcc metals: Linking twin-energy pathways to twin nucleation
- S. Kibey, J. Liu, D. Johnson, H. Sehitoglu
- Materials Science
- 1 December 2007
Deformation twinning is observed in numerous engineering and naturally occurring materials. However, a fundamental law for critical twinning stress has not yet emerged. We resolve this long-standing… Expand